Smoke and Combination Smoke/CO Alarms
with Wire-Free Interconnect
P/N: G-000074-00 EN Rev. A
2
Models included in this User Guide:
Kidde Model Type 120VAC
AA Backup
Batteries
10 Yr Sealed
Battery Backup
Voice
20SAR-VRF
Smoke
Yes Yes No Yes
30CUAR-VRF
Smoke / CO
Yes Yes No Yes
Firex Model Type 120VAC
AA Backup
Batteries
10 Yr Sealed
Battery Backup
Voice
SMACFEX-VRF
Smoke
Yes Yes No Yes
CUACFEX-VRF
Smoke / CO
Yes Yes No Yes
These models are capable of two modes of connectivity:
1. Wire-Free Interconnect: Units communicate with each other using RF wireless signals.
2. AC Hardwire Interconnect: Units communicate with each other using the dwelling’s AC wiring system.
3
Thank You for Purchasing this Alarm
These models utilize standard 120V AC power, as well as AA replaceable backup batteries. They also
contain HUSH
TM
to temporarily silence nuisance alarms, a voice message system, and “self-testing”
features (see Operation and Testing section).
Teach children how to respond to the alarm and that they should never play with the unit. This alarm
is a multi-criteria device. Smoke models are designed to detect smoke, and combination smoke/CO
models are designed to detect both smoke and carbon monoxide from any source of combustion in a
residential environment. It is not designed for use in a recreational vehicle (RV) or boat.
NOTE: Please thoroughly read this user guide and save the document for future reference and to
pass on to any subsequent owner. Images are representative only. Actual product may vary slightly.
The National Fire Protection Association (NFPA) and the manufacturer recommend replacing this alarm
after ten years.
Model: _________________
Date Code (on back): _________________
Date of Purchase: _________________
Where Purchased: _________________
Date to Replace: _________________
Product Support: 1-800-880-6788
Please write down the below information
and have this at hand when you call.
Models included in this User Guide:
3
Scan here to register your device
with Kidde for customer support
and warranty information.
4
Contents
1. Smoke Alarm: What To Do When The Alarm Sounds . . . . . . . . .5
2. Other Alarm Visual And Audible Indicators . . . . . . . . . . . .6
3. Troubleshooting Guide . . . . . . . . . . . . . . . . . . .7
4. Introduction, Product Features And Specifications . . . . . . . . .9
5. Limitations Of Smoke And Carbon Monoxide Alarms . . . . . . . .10
6. Recommended Locations For Smoke And Carbon Monoxide Alarms . . .12
7. Locations To Avoid . . . . . . . . . . . . . . . . . . . .15
8. Wiring . . . . . . . . . . . . . . . . . . . . . . . . 16
9. Activation / Setting Up Wire-Free Interconnect Network / Installation . . .18
9.1 Activation . . . . . . . . . . . . . . . . . . . . . .18
9.2 Setting Up Wire-Free Interconnect Network . . . . . . . . . . 18
9.3 Installation . . . . . . . . . . . . . . . . . . . . . .21
10. Modifying an Existing Alarm Network . . . . . . . . . . . . .23
11. Resetting a Device’s Wireless Settings . . . . . . . . . . . . .24
12. Operation And Testing. . . . . . . . . . . . . . . . . . .24
13. Recognizing Nuisance Alarms . . . . . . . . . . . . . . . .26
14. Battery Information . . . . . . . . . . . . . . . . . . . .27
15. Carbon Monoxide Alarm: What To Do When The Alarm Sounds . . . .28
16. General Carbon Monoxide (CO) Information . . . . . . . . . . .29
17. Cleaning Your Alarm . . . . . . . . . . . . . . . . . . . 31
18. Good Safety Habits . . . . . . . . . . . . . . . . . . . .32
19. Service And Warranty . . . . . . . . . . . . . . . . . . .35
5
1. Smoke Alarm: What To Do When The Alarm Sounds
The smoke alarm pattern is three long beeps with voice “Fire!”, a 1.5 second pause, and three long beeps
repeating. The red LED blinks in time with the alarm pattern only on the alarm(s) that detected the hazard
(initiating alarm).
The smoke alarm takes precedence when both smoke and carbon monoxide are present. (Only
combination smoke/CO models detect carbon monoxide.)
• Alert small children in the home as well as anyone else that might have difficulty recognizing the
importance of the alarm sounding or that might have difficulty leaving the area without help.
• Plan two ways out! Leave immediately by your escape plan. Don’t waste time getting dressed or
picking up valuables.
• While leaving, don’t open any inside door without first feeling its surface. If hot, or if you see
smoke seeping through cracks, don’t open that door! Instead, use your alternate exit. If the inside
of the door is cool, place your shoulder against it, open it slightly and be ready to slam it shut if
heat and smoke rush in.
• If the escape route requires you to go through smoke, stay close to the floor where the air is
cleaner. Crawl if necessary, and breathe shallowly through a cloth, wet if possible.
• Once outside, go to your selected meeting place and make sure everyone is there.
• Call the fire department or 911 from your cell phone outside, or from your neighbor’s home-not
from yours!
• Don’t return to your home until the fire officials say that it is all right to do so.
NOTE: See Section RECOGNIZING NUISANCE ALARMS, for nuisance alarm situations.
6
2. Other Alarm Visual And Audible Indicators
Operational Mode Visual Indications Audible Indications Action/Note
Normal (standby)
AC power: Green LED on continuously.
DC power: Green LED blinks approx every 60 sec.
Test (button press when
no alarm condition is
present)
(Note: Test is very loud,
stand a few feet away.)
Red LED blinks in time with alarm pattern. Smoke Models:
• Single beep.
• 3 long beeps, voice “Fire!,” 3 long beeps.
Combination Smoke/CO Models:
• Single beep.
• 3 long beeps, voice “Fire!,” 3 long beeps,
4 quick beeps, voice “Warning, Carbon
Monoxide,” 4 quick beeps.
Perform Test/Hush
button press once a
week to verify proper
alarm operation.
Smoke or CO Alarm
Memory (unit has
experienced a smoke or
CO alarm event, or has
detected 100ppm CO
or greater.) (CO only on
combination smoke/CO
models)
Smoke: Red LED blinks
every 15 sec.
CO (combination smoke/CO models only):
2 red LED blinks every 15 sec.
After Test/Hush button push:
Voice “Smoke previously detected” or
“Carbon monoxide previously detected.”
(combination smoke/CO models only)
NOTE: Alarm memory is
only retained for 24 hrs.
Push Test/Hush button to
clear Alarm Memory.
Smoke Alarm HUSH
TM
Mode
Red LED blinks every 2 sec (only on the
initiating alarm).
After Test/Hush button push:
Voice “Hush Mode Activated.” Smoke alarm
pattern stops. If there is too much
smoke to allow HUSH, voice “Too much
smoke, alarm cannot be hushed.” (smoke
alarm pattern continues)
This feature is to be
used only when a known
alarm condition, such
as smoke from cooking,
activates the alarm. Push
button during HUSH to
clear HUSH and perform
a test.
Locate (only applies
to Wire-Free
Interconnected units)
None After Test/Hush button push on
non-initiating unit, only initiating unit
continues alarm pattern.
Use this to quickly locate
the alarm source and
determine if alarm is
nuisance or real.
CO Alarm Reset
(combination smoke/CO
models only)
None. After Test/Hush button push: CO alarm
pattern stops.
Unit is confirming if
CO is present or if it
experienced a nuisance
situation. Re-alarm
means danger. Move to
fresh air and call 911.
Initiating Alarm
(multiple alarms in an
interconnected system)
Red LED blinks in time with alarm pattern
indicating that this is the unit initiating the
alarm in an interconnected, multiple alarm,
system.
NOTE: It is possible for more than one
unit to detect a hazard and become an
initiating alarm unit (Red LED blinking).
Unit in either Smoke or CO alarm mode.
7
2. Other Alarm Visual And Audible Indicators
Operational Mode Visual Indications Audible Indications Action / Note
Section 9.2, Step 1: Wire-Free
Interconnect standby/ready
mode
Red LED blinks every second. Voice “Ready for Wireless Interlink. Follow
quick start instructions.”
The device(s) are
ready and waiting to
join a new network.
Section 9.2, Step 2: Wire-Free
Interconnect temporary host
searching for other devices
Red LED blinks twice every
two seconds.
Voice “Searching for other devices” is
announced once. Sonar ping begins.
This device is
hosting a new
network for other
devices to join.
Section 9.2, Step 3: Wire-Free
Interconnect device connected
to network
Red LED blinks 3 times every 2 seconds
until the network is closed.
Voice “Success, now connected” when
interlink is connected.
* The device has
joined a network.
* Repeat Wire-Free
Interconnect with
each alarm.
Section 9.2, Step 4: Wire-
Free Interconnect network
completed, changing back to
normal operation mode
After network is closed, the red LED
stops blinking, If AC is connected, the
green LED will be on continuous. If only
on DC power, the green LED will blink
approx every 60 seconds.
Voice “Setup complete. [number of
devices] devices connected,” when the
network is closed.
Devices are ready
for normal operation
after installation.
3. Troubleshooting Guide
If you require further information please contact Product Support at 1-800-880-6788 or write us at: Kidde, 1016 Corporate
Park Drive, Mebane, NC 27302. Our internet address is www.kidde.com.
Trouble Condition
Visual Indications Audible Indications Action / Note
False Low Battery or
Missing Battery
(AC power is connected
before backup batteries
activated, or when
battery is missing)
Amber LED blinks every
6 sec.
Chirp and voice “Activate Battery” every
60 sec. After 1 hour, voice occurs only
once every 15 mins.
* Remove the battery pull tab, or install batteries.
Low Battery
Amber LED blinks every
6 sec.
Chirp and voice “Low Battery” every 60
sec. After 1 hour, voice occurs only once
every 15 mins.
Voice “Hush Mode Activated” after
button push (first 7 days only).
* Push Test/Hush button once to silence for 24 hrs.
(Push Test/Hush button again to clear HUSH and
perform a test.) Note: 7 days after Low Battery begins,
the notifications cannot be silenced.
* Replace batteries as soon as possible.
Smoke Sensor Fault
Amber LED blinks every
60 sec.
3 chirps every 60 sec and voice
“Clean the Alarm.” After 1 hour, voice
occurs only once every 15 mins.
* See Cleaning Your Alarm section.
*
Push Test/Hush button once to attempt to reset the unit.
*
If error continues, remove alarm, dispose unit, and
replace as soon as possible. (Remove AA batteries
before disposal)
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Trouble Condition
Visual Indications Audible Indications Action / Note
CO Fault (combination
smoke/CO models only)
Amber LED blinks 2 times
every 60 sec.
3 chirps every 60 sec and voice
“Replace Alarm.” After 1 hour, voice
occurs only once every 15 mins.
*
Push Test/Hush button once to attempt to reset the unit.
*
If error continues, remove alarm, dispose unit, and
replace as soon as possible. (Remove AA batteries
before disposal)
Fatal Fault
Amber LED blinks 3 times
every 60 sec.
3 chirps every 60 sec and voice “Replace
Alarm.” After 1 hour, voice occurs only
once every 15 mins.
*
Push Test/Hush button once to attempt to reset the unit.
*
If error continues, remove alarm, dispose unit, and
replace as soon as possible. (Remove AA batteries
before disposal)
End of Unit Life
Amber LED blinks 2
times every 60 sec.
2 chirps every 60 sec and voice
“Replace Alarm.” After 1 hour, voice
occurs only once every 15 mins. Voice
“Hush Mode Activated” after Test/Hush
button push (first 7 days only).
* Push Test/Hush button once to silence for 24 hrs.
(Push Test/Hush button again to clear Hush and per-
form a test.) Note: 7 days after End of Unit Life begins,
the notifications cannot be silenced.
*
Remove alarm, dispose unit, and replace as soon as
possible. (Remove AA batteries before disposal)
Wire-Free Interconnect
connection lost or
Wire-Free Interconnect
creation failed
Amber LED blinks every
30 sec.
1 chirp every 30 sec and voice every
60 sec “Wireless Interlink Connection
Lost.” After 1 hour, voice occurs only
once every 15 mins. Voice “Hush
Mode Activated” after button push.
* Push Test/Hush button to temporarily silence for 24
hrs. (Push Test/Hush button again to clear HUSH
TM
and perform a test.)
* Remove device from mounting bracket, rotate 90
degrees, and re-install device onto mounting bracket.
* If above step fails, reset wireless settings on the “lost
connection” device and start over.
*
If above step fails, try another location for this device,
or swap it with another Wire-Free Interconnected unit
to see if the problem continues. If yes, there could be
interference or distance issues.
*
Contact customer service. If error persists, or if
customer service directs, remove alarm, dispose
unit, and replace as so
on as possible. (Remove AA
batteries before disposal)
Searching for Wire-Free
Interconnect Network
(if a device has lost
connection)
Red LED blinks
every sec.
None *
No immediate action. The device has lost connection
and is searching for the network. If the lost connection
persists, follow the steps in the row above.
MCU Failure
None Constant Tone
* Remove alarm, dispose unit, and replace as soon as
possible. (Remove AA batteries before disposal)
Depleted Battery
Notification
None
Rapid continuous chirping
* Batteries are depleted to where they can no longer
support any features.
* Replace batteries immediately.
Stuck Test/Hush Button
or Side Enrollment
Button
Amber LED blinks 4 times
every 60 sec.
3 chirps every 60 sec. *
Push button to dislodge it from being stuck. If button cannot
be unstuck, remove alarm, dispose unit, and replace as
soon as possible. (Remove AA batteries before disposal)
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4. Introduction, Product Features And Specifications
Introduction
This alarm detects products of combustion using a photoelectric sensor and carbon monoxide (on
combination smoke/CO models only) using an electrochemical cell. Many times throughout this User
Guide, we will refer to Carbon Monoxide as “CO.”
Ten (10) years after the unit was installed, powered up, and tested, this unit will automatically alert you
that it is time to replace the unit. This is called “End of Unit Life” mode. See Troubleshooting Guide. To
help identify the date to replace the unit, a label has been affixed to the side of the alarm. Write the
“Install date” in the space provided, and then write in the “Replace by” date (10 years from initial power
up) in an oil based permanent marker on the label prior to installing the unit. For combination smoke/
CO models, two labels have been provided that have important information on what to do in case of a
CO alarm. Place one label at eye level on a wall near the alarm after it is mounted, and one near a fresh
air source such as a door or window, where you plan to gather after the alarm indicates the presence of
carbon monoxide.
Product Features and Specifications:
• Powered by 120VAC (60 Hz, 85 mA max) wire-in connector with 2 AA backup batteries
• Reduced nuisance alarms
• Self-testing (see Operation and Testing section)
• Voice message system
• Easy installation
• Wire-Free Interconnect to other compatible alarms
• Hardwire Interconnectable to other compatible alarms
• Smoke Alarm HUSH
TM
• Smoke Sensor: Photoelectric
• CO Sensor: Electrochemical (combination smoke/CO models only)
• Temperature Operating Range: 40 °F (4.4 °C) to 100 °F (37.8 °C)
• Humidity Operating Range: up to 95% (smoke models) and 10 to 95% (combination smoke/CO
models) RH, non-condensing
• Audible Alarm: 85+ dB at 10 ft, 3.0 to 3.5 KHz pulsing , with voice messages “Fire!” and/or “Warning!
Carbon Monoxide”
NOTE: After Wire-Free Interconnect setup/enrollment are complete, Wire-Free Interconnect
features will function even if AC power is lost.
AC Wired Interconnect Model Capability
AC models have AC hardwire interconnect capability. When one hardwired interconnect unit sounds an
alarm, all other compatible hardwire or interconnected units will also alarm.
Figure 4
Side enrollment button
Test/Hush button
LED
10
NOTE: AC wiring must be completed properly and the AC quick connector must be attached to the
unit for the hardwire interconnect function to work.
The following models can be interconnected using the standard AC wiring interconnect (Refer to
each model’s user guide for visual and audible indicators):
Models which provide both remote smoke and CO alarms: 20SA10, 20SA10-V, 20SAR, 20SAR-W,
3050-VAS10-A, 3050-VASC10-A, 30CUA10, 30CUA10-V, 30CUAR, 30CUAR-V, 30CUAR-W,
900-CUAR, 900-CUAR-V, KN-COB-IC, KN-COPE-I, P4010ACLEDS, P4010ACLEDS-2,
P4010ACLEDSCO, P4010ACLEDSCO-2, P4010ACS, P4010ACSAQ-WF, P4010ACSCO,
P4010ACSCOAQ-WF, P4010ACSCO-W, P4010ACSCO-WF, P4010ACS-W, P4010ACS-WF,
P4010LACS-W, RGCUAR-RW, RGSAR-RW, SMACFEX, SMAC10YFEX, CUAFEX, CUAFEX-V,
CUAC10YFEX, CUAC10YFEX-V, CUACFEX-VRF, SMACFEX-VRF, 20SAR-VRF, 30CUAR-VRF.
Models which provide remote smoke alarms, but not remote CO alarms: HD135F, i12020, i12020A,
i12040, i12040A, i12060, i12060A, i12080, i12080A, i4618A, i4618AC, P12040, PE120, Pi2000, Pi2010,
RF-SM-ACDC.
Models which provide both remote smoke and CO alarms with a Strobe light and no audible
notification: SL177i, SLED177i
SM120X relay module will only activate from interconnect smoke signal
CO120X relay module will only activate from interconnect CO signal
Wire-Free Interconnect
These models have Wire-Free Interconnect capability. When one Wire-Free Interconnected unit
sounds an alarm, all other compatible Wire-Free Interconnected units will also alarm.
NOTE:
Wire-Free Interconnect steps must be completed for the Wire-Free Interconnect function to work.
The following models can be interconnected using the Wire-Free Interconnect feature: RGSDR-RW,
RGCUDR-RW, 20SAR-VRF, 20SDR-VRF, 30CUAR-VRF, 30CUDR-VRF, SMACFEX-VRF, SMDCFEX-VRF,
CUACFEX-VRF, CUDCFEX-VRF.
5. Limitations Of Smoke And Carbon Monoxide Alarms
WARNING: PLEASE READ CAREFULLY AND THOROUGHLY
• Life safety from fire in residential occupancies is based primarily on early notification to occupants of the
need to escape, followed by the appropriate egress actions by those occupants.
• There are situations where a smoke alarm may not be effective to protect against fire as stated in the
NFPA Standard 72. For instance:
a) smoking in bed
11
b) leaving children home alone
c) cleaning with flammable liquids, such as gasoline
• Fire warning systems for dwelling units are capable of protecting about half of the occupants in
potentially fatal fires. A smoke alarm may not be effective in some situations, such as during incendiary
fires where the fire grows so rapidly that an occupant’s egress is blocked even with properly located
smoke alarms, or when victims are intimate with the fire (for example, when a person’s clothes catch fire
while cooking), too old or young, or physically or mentally impaired such that they cannot escape even
when warned early enough that escape should be possible. For these people, additional strategies
such as protection-in-place or assisted escape or rescue are necessary.*
• This model meets the latest residential smoke alarm standards, which includes enhanced resistance
to nuisance alarms from cooking. Industry experts recommend that both ionization and photoelectric
smoke alarms be installed to help ensure optimal detection of the various types of fires that can occur
within the home. Ionization sensing alarms may detect invisible fire particles (associated with fast flaming
fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible fire particles
(associated with slow smoldering fires) sooner than ionization alarms.
• A battery powered alarm must have a battery of the specified type, in good condition and installed
properly.
• Smoke alarms must be tested regularly to make sure the battery and the alarm circuits are in good
operating condition.
• Smoke alarms cannot provide an alarm if smoke does not reach the alarm. Therefore, smoke alarms may
not sense fires starting in chimneys, within walls, on roofs, on the other side of a closed door or other
obstructions.
• If the alarm is located outside the bedroom or on a different floor, it may not wake up a sound sleeper.
• The use of alcohol or drugs may also impair one’s ability to hear the smoke alarm. For optimal detection,
a smoke alarm should be installed in each sleeping area on every level of a home.
This alarm is not intended to alert hearing impaired individuals.
* Reference National Fire Protection Association (NFPA) standard 72
WARNING: PLEASE READ CAREFULLY AND THOROUGHLY
IMPORTANT: Combination smoke/CO alarms are designed to detect carbon monoxide gas from ANY
source of combustion. They are NOT designed to detect any other gas.
CAUTION: Combination smoke/CO alarms will only indicate the presence of carbon monoxide gas
at the sensor. Carbon monoxide gas may be present in other areas. Never restart the source of a CO
problem until it has been fixed. NEVER IGNORE THE ALARM!
WARNING: COMBINATION SMOKE/CO ALARMS ARE INTENDED FOR USE IN ORDINARY
INDOOR LOCATIONS OF FAMILY LIVING UNITS. THEY ARE NOT DESIGNED TO MEASURE
COMPLIANCE WITH OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA)
12
COMMERCIAL OR INDUSTRIAL STANDARDS. THEY ARE NOT SUITABLE FOR INSTALLATION
IN HAZARDOUS LOCATIONS AS DEFINED IN THE NATIONAL ELECTRIC CODE. THEY ARE NOT
DESIGNED FOR USE IN A RECREATIONAL VEHICLE (RV) OR BOAT.
• The installation of combination smoke/CO alarms should not be used as a substitute for proper
installation, use, and maintenance of fuel burning appliances, including appropriate ventilation and
exhaust systems.
• Combination smoke/CO alarms do not prevent CO from occurring, nor can they solve any existing
CO problem.
WARNING: COMBINATION SMOKE/CO ALARMS ARE DESIGNED TO HELP PROTECT
INDIVIDUALS FROM ACUTE EFFECTS OF CARBON MONOXIDE EXPOSURE. THEY WILL NOT
FULLY SAFEGUARD INDIVIDUALS WITH SPECIFIC MEDICAL CONDITIONS. IF IN DOUBT,
CONSULT A MEDICAL PRACTITIONER. INDIVIDUALS WITH MEDICAL PROBLEMS MAY
CONSIDER USING WARNING DEVICES WHICH PROVIDE AUDIBLE AND VISUAL SIGNALS FOR
CARBON MONOXIDE CONCENTRATIONS UNDER 30 PPM. *
• The combination smoke/CO alarms have not been investigated for carbon monoxide alarm below
70 PPM.
• This device requires a continuous supply of electrical power from a healthy battery or AC
connection, depending on the model. It will not work without power.
* Reference Underwriters Laboratories (UL) standard 2034
6. Recommended Locations For Smoke And Carbon
Monoxide Alarms
• Locate smoke alarms in all sleeping areas. Try to monitor the exit path as the bedrooms are usually
farthest from the exit. If more than one sleeping area exists, locate additional alarms in each
sleeping area.
• Locate additional alarms in stairways, because stairways act like chimneys for smoke and heat.
• Locate at least one alarm on every floor level.
• Locate an alarm in every bedroom.
• Locate an alarm in every room where electrical appliances are operated (i.e. portable heaters or
humidifiers).
• Locate an alarm in every room where someone sleeps with the door closed. The closed door may
prevent an alarm not located in that room from waking the sleeper.
• Smoke, heat, and combustion products rise to the ceiling and spread horizontally. Mounting the
smoke alarm on the ceiling in the center of the room places it closest to all points in the room.
Ceiling mounting is preferred in ordinary residential construction.
13
Figure 6-A
Figure 6-B
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 ft (1.8m) of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
• For mobile home installation, select locations carefully to avoid thermal barriers that may form at
the ceiling. For more details, see MOBILE HOME INSTALLATION section.
• When mounting the alarm on the wall, use an inside wall with the top edge of the alarm at a
maximum of 12” (30.5 cm) below the ceiling.
NFPA 72 states: “Smoke alarms in rooms with ceiling slopes greater than 1 ft in 8 ft (0.3m in 2.4 m)
horizontally shall be located on the high side of the room.” NFPA 72 states: “A row of detectors shall
be spaced and located within 3 ft (0.9m) of the peak of the ceiling measured horizontally.”
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
14
• Put smoke alarms at both ends of a bedroom hallway or large room if the hallway or room is more
than 30ft (9.1 m) long.
• Install Smoke Alarms on sloped, peaked or cathedral ceilings at or within 3ft (0.9m) of the highest
point (measured horizontally).
• Industry experts recommend a CO alarm be installed on each level of the home -- ideally on any
level with fuel burning appliances and outside of sleeping areas.
This equipment should be installed in accordance with the National Fire Protection Association’s 72
(National Fire Protection Association, Batterymarch Park, Quincy, MA 02269).
Mobile Home Installation
Modern mobile homes have been designed and built to be energy efficient. Install smoke alarms
as recommended above. In older mobile homes that are not well insulated compared to present
standards, extreme heat or cold can be transferred from the outside to the inside through poorly
insulated walls and roof. This may create a thermal barrier which can prevent the smoke from reaching
an alarm mounted on the ceiling. In such units, install the smoke alarm on an inside wall with the top
edge of the alarm a maximum of 12” (30.5 cm) below the ceiling.
If you are not sure about the insulation in your mobile home, or if you notice that the outer walls and
ceiling are either hot or cold compared to the room air temperature, install the alarm on an inside wall.
NFPA 72 (National Fire Protection Association) requires smoke alarms be installed in each sleeping area.
WARNING: TEST YOUR ALARM OPERATION AFTER MOBILE HOME HAS BEEN IN STORAGE
OR UNOCCUPIED, AND AT LEAST ONCE A WEEK DURING USE.
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
Figure 6-C
15
7. Locations To Avoid
(See Figures 6-A, 6-B, & 6-C for recommended locations)
• In the garage. Products of combustion are present when you start your automobile.
• Normal cooking may cause nuisance alarms. If a kitchen alarm is desired, it should have an alarm
silence feature and should not be installed within 6 ft (1.8m) of cooking appliances.
• Do not install within 6 ft (1.8m) of heating appliances.
• Less than 4” (10cm) from the peak of an “A” frame type ceiling.
• In an area where the temperature may fall below 40 °F (4.4 °C) or rise above 100 °F (37.8 °C), such
as garages and unfinished attics.
• In dusty areas. Dust particles may cause nuisance alarms or a failure to alarm.
• In very humid areas (above 95% RH, non-condensing) as moisture or steam can cause nuisance
alarms.
• In insect-infested areas.
• Smoke alarms should not be installed within 3 ft (0.9m) of the door to a bathroom containing a tub
or shower, forced air supply ducts used for heating or cooling, ceiling or whole house ventilating
fans, or other high air flow areas.
• Near lights. Electronic “noise” generated by the lights may cause nuisance alarms.
• Do not install near vents, flues, or chimneys.
• Do not install near fans, doors, windows or areas directly exposed to the weather.
• Avoid installing where the unit will be exposed to direct sunlight.
NOTE: Smoke alarms are not to be used with detector guards unless the combination (alarm and detector
guard) has been evaluated and found suitable for that purpose.
16
8. Wiring
Wiring Requirements:
• This alarm should be installed on a UL Listed or recognized junction box. All connections should be
made by a qualified electrician and all wiring used shall be in accordance with articles 210 and 300.3(B)
of the U.S. National Electrical Code ANSI/NFPA 70, NFPA 72 and/or any other codes having jurisdiction
in your area. The multiple station interconnect wiring to the alarms must be run in the same raceway or
cable as the AC power wiring. In addition, the resistance of the interconnect wiring shall be a maximum
of 10 ohms.
• The maximum wire run distance between the first and last unit in an interconnected system is 1000 feet.
• The appropriate power source is 120 Volt AC Single Phase supplied from a non-switchable circuit.
• Kidde alarms are not designed, agency tested or certified for recessed mounting and should not be
installed in this manner. Recessed mounting impedes smoke entry into the smoke chamber, which may
prevent the alarm from sounding in a timely manner. This could endanger the lives of occupants in the
residence. Kidde alarms are designed, tested and certified for wall (if applicable) and ceiling surface
mount only.
WARNING: THE ALARM CANNOT BE OPERATED FROM POWER DERIVED FROM A SQUARE WAVE,
MODIFIED SQUARE WAVE OR MODIFIED SINE WAVE, INVERTER. THESE TYPES OF INVERTERS ARE
SOMETIMES USED TO SUPPLY POWER TO THE STRUCTURE IN OFF GRID INSTALLATIONS, SUCH
AS SOLAR OR WIND DERIVED POWER SOURCES. THESE POWER SOURCES PRODUCE HIGH PEAK
VOLTAGES THAT WILL DAMAGE THE ALARM.
Wiring Instructions for AC Quick Connector Harness:
CAUTION: Turn off the main power to the circuit before wiring the alarm.
• For alarms that are used as single station, DO NOT CONNECT THE RED WIRE TO ANYTHING. Leave
the red wire insulating cap in place to make certain that the red wire cannot contact any metal parts or
the electrical box.
• When alarms are hardwire interconnected, all interconnected units must be powered from a single
circuit.
• A maximum of 24 Kidde Safety devices may be interconnected in a multiple station arrangement.
The interconnect system should not exceed the NFPA interconnect limit of 12 smoke or smoke/CO
combination alarms and/or 18 alarms total (smoke, CO, smoke/CO combination, heat, etc.). With 18
alarms interconnected, it is still possible to interconnect up to a total of 6 remote signaling devices and/
or relay modules.
17
• Figure 8-A illustrates interconnection wiring. Improper connection will result in damage to the alarm,
failure to operate, or a shock hazard.
• Make certain alarms are wired to a continuous (non-switched) power line.
NOTE: Use standard UL Listed household wire (as required by local codes) available at all electrical
supply stores and most hardware stores.
NOTE: AC power should be turned off at this stage.
• For best results to minimize nuisance alarms, interconnected alarms should be on a dedicated
line. If not on a dedicated line, it is suggested that the smoke alarms share a lighting load circuit
that does not have a dimmer associated with it. If receptacles must be placed on the same line it is
suggested that they be placed ahead of the smoke alarms (see Figure 8-B). This will prevent large
voltage drops from occurring between the first and last alarm in the circuit.
Kidde Relay Module
SM120X, CO120X
or both
Wires on alarm harness: Connected to:
Black: Hot side of AC line
White: Neutral side of AC line
Red: Interconnect lines (red wires) of other
units in the multiple station set-up
Service
Panel
Receptacles Interconnected alarms
Wiring practice that has had good results
in preventing nuisance alarms
L
N
FUSE OR CIRCUIT BREAKER
Additional
Alarm
RED
BLACK
WHITE
Additional
Alarm
RED
BLACK
WHITE
RED
BLACK
WHITE
Optional
Accessory
First
Alarm
Figure 8-A, Interconnect Wiring Diagram
Figure 8-B
18
9.
Activation / Setting up Wire-Free Interconnect Network / Installation
NOTE: For the easiest experience, follow these steps:
(A) unbox all new Wire-Free Interconnect devices on a table top or other flat surface
(B) power up all devices by activating the batteries (Figure 9.1-A)
(C) set up the Wire-Free Interconnect network (section 9.2)
(D) install devices
(E) open network, confirm number of devices connected
Refer to the Troubleshooting Guide if you have problems.
NOTE: A dust cover has been installed on the alarm. Keep the dust cover on until all construction has
been completed for at least 24 hours (drywall, painting, varnishing, mounting plate install, etc). Retain
the dust cover and re-install it to protect the alarm during future construction projects. Construction dust
and chemicals can cause contamination and false alarms. NOTE: You can leave the dust cover on during
Wire-Free Interconnect setup.
WARNING: DUST COVER MUST BE REMOVED FOR ALARM TO OPERATE.
NOTE: Single station alarms are units that are not connected to other alarms in any manner, including
hardwire interconnect or Wire-Free Interconnect. Single station alarms (including these models, IF USED
as a single station alarm) CANNOT send or receive alarm signals to other alarms in your home.
9.1 Activation
Pull out the battery pull tab first to activate the batteries (see
Figure 9-A). Battery activation is confirmed with a beep. If the beep
does not occur when the battery pull tab is removed, remove the
batteries and reinstall them. Confirm the battery activation beep.
NOTE: Attaching AC power first, without removing the battery pull
tab, or without installing the batteries in the correct orientation, will
result in a false low battery trouble condition (see Troubleshooting
Guide). You need to activate or install the batteries to eliminate the
false low battery trouble condition notifications.
9.2 Setting up Wire-Free Interconnect Network
CAUTION: This wireless enabled alarm is solely intended for use in ordinary indoor locations of
single-family homes. It is not designed for outdoor applications, multi-family homes, multi-apartment
buildings or other commercial building applications. The range and performance of any wireless
device will vary depending on its surroundings.
Figure 9.1-A
19
IMPORTANT: In a mixed interconnect system (hardwire and wire-free devices), loss of power or a de-
vice fault may disrupt communication between alarms. Refer to the Troubleshooting Guide to resolve
problems and restore your interconnect network.
IMPORTANT: These Wire-Free Interconnect devices are not compatible with earlier Kidde RF/ Wire-
less legacy devices.
For adding multiple devices to a Wire-Free Interconnect Network, start with Step 1 below.
STEP 1: Place Devices in Standby/Ready Mode
Press the side enrollment button once on each device (one at a time) to place the devices in standby/
ready mode (see Figure 9.2-A). Each device will announce “Ready for Wireless Interlink, Follow Quick Start
instructions,” and the red LED will blink every second.
Tip: If you wait more than 5 minutes, the setup will time out and you’ll hear “Wireless Interlink Not
Connected.” Just press the side button once to try again.
Example setup flow showing 3 devices being enrolled:
STEP 2: Choose a Temporary Host Device
Press the side enrollment button once on any device (see Figure 9.2-B). This device will host a
network for other devices to connect with. The red LED will blink twice every two seconds, a voice will
announce “Searching for other devices,” and a pinging sound will start.
Device 1 Device 2 Device 3
.
Red LED blinks twice every
One button push
two seconds
.
Voice "Searching for other devices."
.
Sonar ping
Figure 9.2-B
Device 1
One button push
.
Voice "Ready for Wireless Interlink.
Follow quick start instructions."
.
Red LED blinks every sec.
Device 2
One button push
.
Voice "Ready for Wireless Interlink.
Follow quick start instructions."
.
Red LED blinks every sec.
Device 3
One button push
.
Voice "Ready for Wireless Interlink.
Follow quick start instructions."
.
Red LED blinks every sec.
20
STEP 3: Wire-Free Interconnect Pairing Connected
After each unit is paired in the Wire-Free Interconnect network, the red LED will blink three times
every two seconds until the network is closed, or a timeout of 5 minutes maximum. A voice will
announce “Success, now connected.” Continue enrolling each device to be included in the Wire-Free
Interconnect network, and confirm the voice “Success, now connected” on each device.
Device 1 Device 2 Device 3
.
Red LED blinks three times
every two seconds
.
Voice “Success, now connected.”
NOTE: The Temporary Host has a 5 min timeout that is refreshed every time a new device is joined,
so the User can connect all devices at the same time, or one by one within 5 min intervals.
After a short period, all
devices from Step 1 will
automatically start
connecting to the
network. This might
happen simultaneously
or with a small delay
between each device.
.
Red LED blinks three times
every two seconds
.
Voice “Success, now connected.”
Figure 9.2-C
STEP 4: Close the Network
Press the side enrollment button twice quickly (within 4 seconds) on any one enrolled device (see
Figure 9.2-D). The red LED will stop blinking, and the sonar ping will stop. A voice will announce “Setup
complete. [number of devices] devices connected.” The green LED will blink every 60 seconds as the
device(s) return to normal operation mode.
NOTE: Closing the network may take up to 30 seconds.
Device 1 Device 2
.
.
Device 1 Device 2
2 button pushes
.
Red LED stops blinking.
.
Sonar ping stops.
.
Voice "Setup complete. [number
of devices] devices connected."
.
Green LED on.
.
Red LED stops blinking.
.
Green LED on.
Device 3
.
Red LED blinks three times
every two seconds
.
“Success, now connected.”
.
Red LED blinks three times
every two seconds
.
“Success, now connected.”
Device 3
.
Red LED blinks three times
every two seconds
.
“Success, now connected.”
.
Red LED stops blinking.
.
Green LED on.
Figure 9.2-D
21
CAUTION: Multiple Wire-Free Interconnect networks in the same dwelling are not supported. If a device
fails to join the same (single) Wire-Free Interconnect network due to distance or other location hindrances,
relocate the device in order to form only one Wire-Free Interconnect network.
NOTE: Make sure the number of connected devices announced matches the total number of Wire-Free
Interconnect devices installed at the property. If the numbers do not match, redo the Wire-Free Interconnect
setup with two short presses the side enrollment button on any Wire-Free Interconnect device.
NOTE: After the network is created and closed, you can push the side enrollment button once on any enrolled
device and it will announce the number of devices connected in the network.
NOTE: At any time during Wire-Free Interconnect setup, if you have a problem, you can push and hold the side
enrollment button on any problem unit for about 8 seconds (you will hear 3 beeps after 8 seconds), and then
release the button. The unit will reset the unit’s wireless settings (described in Section 11) Once wireless settings
are reset, the unit will prompt the user to follow Quickstart instructions and start over.
After Wire-Free Interconnect setup, the alarm is now fully activated! Test your alarm as described in
Operation and Testing section.
9.3 Installation
INSTALLATION:
STEP 1: Install Mounting Bracket
• After selecting the proper location for your alarm, and wiring the AC QUICK CONNECTOR harness as
described previously, attach the mounting bracket to the electrical box using the existing screws or,
if included, the screws provided with this alarm. To ensure aesthetic alignment of the alarm with the
hallway, or wall, the “A” line on the mounting bracket should be parallel with the hallway when ceiling
mounted or horizontal when wall mounted. (See Figure 9.3-A)
• Pull the AC QUICK CONNECTOR through the center hole in the mounting bracket and secure the
bracket, making sure that the mounting screws are positioned in the small ends of the keyholes
before tightening the screws. (See Figure 9.3-A)
Insert the AC
Quick connector
into the slot.
Alignment Marks
(”A” Line) on
Mounting
Bracket
Remove
Install
AC Quick Connector
harness shipped
with product
AC connector
22
Insert the AC
Quick connector
into the slot.
Alignment Marks
(”A” Line) on
Mounting
Bracket
Remove
Install
AC Quick Connector
harness shipped
with product
AC connector
Figure 9.3-A
STEP 2: Attach AC Quick Connector
Plug the AC QUICK CONNECTOR into the back of the unit, making sure that the connector snaps into
place. Then push the excess wire back into the electrical box through the hole in the center of the
mounting bracket.
STEP 3: Install Alarm
Install the alarm fully on the mounting bracket by rotating the alarm in a clockwise direction (Figure 9.3-C).
NOTE: The alarm will mount to the bracket in 4 positions (every 90 degrees).
NOTE: If either battery is missing, the alarm cannot mount on the mounting bracket.
NOTE:
Do not grab the shield to install or remove the alarm. Grab the alarm by the outside of the enclosure (Figure 9.3-B).
IMPORTANT: Test & confirm your network after Wire-Free Interconnect setup and installation of all devices:
.
Press the side button twice on one installed device.
.
Wait for a moment to hear other devices say “Success, now connected.”
.
Push the side button twice again to close the network.
. Listen closely for the voice to announce the number of devices connected and confirm the number
matches how many devices you have installed.
23
Shield
✘
Figure 9.3-B
Install
Remove
Mounting Bracket
Note orientation
of "A" line.
LED
To ensure aesthetic alignment, orient
the unit as shown on the mounting
bracket and rotate the unit completely until it stops.
After fully installed
(The button should
be at the bottom.)
Figure 9.3-C
STEP 4: Turn on the AC power.
The green LED will illuminate when AC power is applied.
The alarm is now activated! After activation and installation, test your alarm as described in Operation
and Testing section.
WARNING: Failure to properly connect AC power and install the batteries in the correct
orientation, will prevent proper operation of this alarm and will prevent its response to fire hazards.
10. Modifying an Existing Alarm Network
Adding a Device to an Existing Network
For various reasons, you might want to add additional units to your existing alarm network.
Modifying your existing alarm network is easy and user-friendly.
To add another unit to your existing Wire-Free Interconnect alarm network:
24
• Unbox the new device(s) and power it up (Figure 9.1-A)
• Push the side enrollment button twice within 4 seconds on any model in your existing Wire-Free
Interconnect alarm network (not the new device(s)) to open the network.
NOTE: The temporary host from previous setup in Section 9.2 will emit a sonar ping for approx 12 seconds
for internal verifications before opening the network.
• Push the side enrollment button once on the new device(s)
• Wait for network connection (Step 3 of Section 9.2)
• Close the network (Step 4 of Section 9.2)
Removing a Device from an Existing Network
• Choose any device in the existing network and push the side enrollment button twice within 4 seconds
to open the network.
• On the device to be removed, press and hold the side enrollment button for 8 to 12 seconds, until the
device beeps three times.
• Choose any device that is still enrolled in the network and push the side enrollment button twice
within 4 seconds to close the network.
The device from step 2 has been removed from the network, and its wireless settings have been reset.
11. Resetting a Device’s Wireless Settings
This device offers the ability to reset the wireless settings if needed.
If the Wire-Free Interconnect features fail to enroll properly for some reason, it is possible to reset the
device back to factory settings and start over.
STEP 1:
• Press and hold the side enrollment button on the device for 8 seconds.
• The device will beep once when the button is first pressed.
• After 4 seconds, the device will beep twice. (continue holding the button)
• After 8 seconds, the device will beep three times.
STEP 2:
Release button. A voice will announce “Resetting wireless settings.”
STEP 3:
Device has been reset to factory settings and is ready to start over with Wire-Free Interconnect
enrollment (Section 9.2).
12. Operation And Testing
This model meets the latest residential smoke alarm standards, which includes enhanced
resistance to nuisance alarms from cooking.
25
Operation
The alarm is operating once it is activated and
testing is complete (see “TESTING” below).
When products of combustion (smoke for smoke
only models, and smoke or CO for combination
smoke/CO models) are sensed, the unit sounds
a loud alarm with voice messages. See Sections
1 and 2 for alarm signal descriptions. In high
levels of CO, the unit will go into alarm in a shorter
period of time than at low levels of CO (combination smoke/CO models only).
Testing
WARNING: Do not attempt to test this unit with retail “canned smoke” products. Those products
are intended for use by trained professionals and produce inconsistent results when misused.
Over-application of canned smoke can permanently damage the alarm.
Self-Testing
This model is equipped with internal, self-testing components that are always checking to ensure the
device is operating as expected. (Weekly manual testing is still required. See below.)
Manual Testing
NOTE: When pushing the Test/Hush button, use only your finger or thumb. Using any other
instrument(s) (such as a broom handle) is strictly prohibited, as it may damage the alarm.
Test your alarm weekly by pressing and releasing the Test/Hush button quickly. A quick beep will
confirm the Test/Hush button has been pushed followed by the test sequence. See Other Alarm Visual
and Audible Indicators table. The alarm and voice (and any interconnected units) will sound if the
electronic circuitry, horn, speaker, and batteries are working. If the alarm or voice does not sound, or
gives erratic or low volume sound, the unit must be replaced.
WARNING: Due to the loudness of the alarm, always stand about 2.5 ft (0.8 m) away from the unit
or use ear protection when testing.
WARNING: Do not use an open flame to test your alarm, you could damage the alarm or ignite
combustible materials and start a structure fire.
Chirping
When End of Unit Life or Low Battery chirping begins, you can temporarily silence these chirps
by pressing the Test/Hush button. Other fault /error chirps cannot be silenced. Take appropriate
action as described in the Troubleshooting Guide.
NOTE: Replacing batteries will not erase the Wire-Free Interconnect network. However, the alarm may
take up to 15 minutes to automatically reconnect.
WARNING: REPLACE UNIT AS SOON AS POSSIBLE WHEN IN END OF UNIT LIFE. SEVEN (7)
DAYS AFTER END OF UNIT LIFE BEGINS, THE NOTIFICATIONS CANNOT BE SILENCED, AND
SMOKE AND/OR CO DETECTION CANNOT BE GUARANTEED. REPLACE IMMEDIATELY!
CO ALARM SENSOR RESPONSE TIMES
At 70 PPM, the unit must alarm within 60-240 minutes.
At 150 PPM, the unit must alarm within 10-50 minutes.
At 400 PPM, the unit must alarm within 4-15 minutes.
(Combination smoke/CO models only)
26
13. Recognizing Nuisance Alarms
Smoke Nuisance
This model meets the latest residential smoke alarm standards, which includes enhanced resistance to
nuisance alarms from cooking.
HUSH
TM
: If you know why the alarm is sounding, and you can verify that it is not a life threatening
situation, you can push the button on the initiating unit to silence the alarm for 8-10 minutes. NOTE: If
nothing happens after pushing the button the first time, press it again to attempt HUSH. If the
smoke is not too dense, that unit, and all interconnected units will silence. After the HUSH time period
has elapsed, the smoke alarm will automatically reset and sound the alarm if particles of combustion
are still present. You can use the HUSH function repeatedly until the air has been cleared of the
condition causing the alarm.
NOTE: Dense smoke will override the HUSH function and sound a continuous alarm. If no fire
is present, check to see if one of the reasons listed in “Locations to avoid” may have caused the
alarm. If a fire is discovered, get out and call the fire department or 911.
Cigarette smoke will not normally cause the unit to alarm, unless the smoke is blown directly into the
alarm. Combustion particles from cooking may set off the alarm if it is located too close to a cooking
appliance. Large quantities of combustible particles are generated from spills or when broiling. Using
the fan on a range hood which vents to the outside (non-recirculating type) will also help prevent
nuisance alarms from occurring by removing these combustible products from the kitchen.
Carbon Monoxide (CO) Nuisance (combination smoke/CO models only)
RESET: Pushing the Test/Hush button on a combination smoke/CO unit during CO alarm allows the
unit to reset calculations and double check for the presence of CO. If the unit re-alarms within 6 min-
utes, it is sensing high levels of CO which can quickly become a dangerous situation. Move to fresh air
and call 911.
LOCATE:
In a Wire-Free Interconnect system (all units will be alarming together), a unit that detects smoke or
CO and initiates an alarm is called the “initiating alarm unit.” Initiating alarm units will be flashing the
red LED during alarm. Depending on unit locations, and the location of the source of smoke or CO,
it is possible to have more than one initiating unit. If you suspect a nuisance alarm situation, you can
use this feature to help you locate the initiating alarm unit(s) in a Wire-Free Interconnected system.
Push the button on any non-initiating Wire-Free Interconnect unit, and ALL Wire-Free Interconnect
units EXCEPT the initiating alarm unit(s) will silence for two minutes. You can use the LOCATE feature
repeatedly until you find the initiating alarm unit(s), or the air has been cleared of the condition causing
the alarm.
NOTE: HUSH and Locate features are dependent on the type of models in your interconnect system.
Non-wireless models cannot receive the wireless Locate feature and will continue to alarm until the
initiating unit is Hushed or the Smoke/ CO condition clears.
27
NOTE: Smoke only models do not detect CO, but will receive and transmit a CO alarm signal from an
interconnected CO or combination smoke/CO alarm. Pushing the button on a smoke only model when
it is transmitting an interconnected CO alarm signal will do nothing.
WARNING: ALTHOUGH RESET FEATURE CAN BE USED FOR CO ALARM EVENTS, IT IS
IMPOSSIBLE TO DETERMINE THE SOURCE OF A CO ALARM USING SIGHT OR SMELL.
ALWAYS CONSIDER A CO ALARM EVENT AS DANGEROUS.
14. Battery Information
These models are powered with AC power, but also contain two
replaceable AA backup batteries. Under normal conditions, fresh
batteries will last at least one year. NOTE: Constant exposure to high
or low humidity or temperatures, or poor Wire-Free Interconnect
signal, may reduce battery life.
WARNING: THE ALARM IS SEALED AND THE COVER IS NOT
REMOVABLE.
In order to access the battery compartment, the wiring harness needs
to be removed. To release the wiring harness, press down on the tab as
shown in Figure 14-A.
LOW BATTERY
This alarm is equipped with a low battery monitor circuit. If the battery
capacity is nearing the point where it can no longer provide adequate
power for all alarm functions, the low battery condition will occur. See
Troubleshooting Guide. The batteries must be replaced within 7 days of
the first occurrence of the “Low Battery Warning” to provide continuous
alarm detection. NOTE: Replacing batteries will not erase the Wire-Free
Interconnect network. However, the alarm may take up to 15 minutes to
automatically reconnect.
Replace batteries with one of the following approved brands:
Energizer E91, Gold Peak 15A or Golden Power GLR6A.
These batteries can be purchased at your local retailer.
WARNING: Use only the batteries specified. Use of different batteries may have a detrimental effect
on the alarm. Do not mix old and new batteries. Do not mix alkaline, standard, or rechargeable batteries.
NOTE: Do not use lithium batteries in this unit. A good safety measure is to replace the batteries at
least once a year, or at the same time you change your clocks for daylight saving time. Loss of AC
power and a missing or improperly installed battery will render the unit inoperable.
NOTE: If either battery is missing, the alarm cannot mount on the mounting bracket.
WARNING: Failure to properly connect AC power and install batteries in the correct orientation
will prevent proper operation of this alarm and will prevent its response to fire and/or CO hazards.
Figure 14-B
Press Tab to Release
Wire Harness
Figure 14-A
28
15. Carbon Monoxide Alarm: What To Do When The Alarm Sounds
NOTE: Smoke only models do not detect carbon monoxide (CO), but will receive and transmit a CO
alarm signal from an interconnected CO or combination smoke / CO alarm.
The carbon monoxide (CO) alarm pattern is four quick beeps with voice “Warning! Carbon Mon-
oxide” repeating every 5 seconds. The red LED blinks in time with the alarm pattern only on the
alarm(s) that detected the hazard (initiating alarm). On DC power only, after 4 minutes in CO alarm
the alarm pattern will only occur every 60s.
WARNING:
CARBON MONOXIDE (CO) IS A COLORLESS,
ODORLESS, POISONOUS GAS. YOU CAN’T TASTE, SEE, OR SMELL
CO, BUT IT CAN KILL IN JUST MINUTES. THIS ALARM WILL SOUND
IN A 4-BEEP PATTERN IF LIFE THREATENING LEVELS OF CO ARE
DETECTED. IF THE ALARM SOUNDS:
1
)
Immediately evacuate all occupants from the space and go outdoors to fresh air.
2) Call emergency responders (911 or fire department) for help; notify the
building or vehicle owner, as necessary.
EMERGENCY PHONE #: _______________________
Always consider a CO alarm to be dangerous. After emergency services responders have arrived,
the premises has been aired out, and your alarm remains in its normal condition, it is important to
Model Type 120VAC
AA Backup
Batteries
10 Yr Sealed
Battery Backup
Voice
30CUAR-VRF
Smoke / CO
Yes Yes No Yes
CUACFEX-VRF
Smoke / CO
Yes Yes No Yes
Models that detect CO
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16. General Carbon Monoxide (CO) Information
Carbon monoxide (CO) is a colorless, odorless, and tasteless poison gas that can be fatal when
inhaled. CO inhibits the blood’s capacity to carry oxygen.
Possible Sources of CO
Inside your home, appliances used for heating and cooking are the most likely sources of CO. Vehicles
and other combustion engines running in an attached garage and using a charcoal/gas grill or hibachi
in an enclosed area are all possible sources of CO. Generators running in enclosed areas, such as
garages or living spaces, will create CO. CO can be produced when burning any fossil fuel: gasoline,
diesel, propane, natural gas, oil and wood. It can be produced by any fuel-burning appliance that
is malfunctioning, improperly installed, or not ventilated correctly, such as: Furnaces/boilers, gas
ranges/stoves, gas clothes dryers, water heaters, portable fuel burning space heaters, fireplaces,
wood-burning stoves and certain swimming pool heaters. Blocked chimneys or flues, back drafting
and changes in air pressure, corroded or disconnected vent pipes, or a loose or cracked furnace heat
exchanger can also release CO into your building.
The following conditions can result in transient CO situations:
Excessive spillage or reverse venting of fuel-burning appliances caused by outdoor ambient
conditions such as: Wind direction and/or velocity, including high gusts of wind, heavy air in the
vent pipes (cold/humid air with extended periods between cycles), negative pressure differential
resulting from the use of exhaust fans, simultaneous operation of several fuel-burning appliances
competing for limited internal air, vent pipe connections vibrating loose from clothes dryers, furnaces/
boilers, or water heaters, obstructions in, or unconventional, vent pipe designs which can amplify the
above situations, extended operation of unvented fuel-burning devices (range, oven, fireplace, etc.),
temperature inversions which can trap exhaust gases near the ground, car idling in an open or closed
attached garage, or near a home.
CO Safety Tips
Every year, have the heating system, vents, chimney and flue inspected and cleaned by a qualified
call a qualified appliance technician to investigate for sources of CO from fuel burning equipment
and appliances and inspect for proper operation of this equipment. If problems are identified during
this inspection, have the equipment serviced immediately. Note any combustion equipment not
inspected by the technician and consult the manufacturer’s instructions or contact the manufacturer
directly for more information about CO safety and this equipment. Make sure that motor vehicles are
not or have not been operating in an attached garage or adjacent to the residence.
NOTE: See Section RECOGNIZING NUISANCE ALARMS, for nuisance alarm situations.
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technician. Always install appliances according to manufacturer’s instructions and adhere to
local building codes. Most appliances should be installed by professionals and inspected after
installation. Regularly examine vents and chimneys for improper connections, visible rust, or
stains, and check for cracks in furnace heat exchangers. Verify that the color of flame is blue on
pilot lights and burners. An amber or orange flame is a sign that the fuel is not burning completely
and may be releasing CO. Teach all household members what the alarm sounds like and how
to respond. Fire Departments, most utility companies and HVAC contractors will perform CO
inspections. Some contractors may charge for this service. It’s advisable to inquire about any
applicable fees prior to having the service performed. Kidde will not pay for, or reimburse the
owner or user of this product, for any repair or dispatch calls related to the alarm sounding.
Symptoms of CO Poisoning
Initial carbon monoxide poisoning symptoms are similar to the flu with no fever and can include
dizziness, severe headaches, nausea, vomiting and disorientation. Everyone is susceptible but experts
agree that unborn babies, pregnant women, senior citizens and people with heart or respiratory
problems are especially vulnerable. If symptoms of carbon monoxide poisoning are experienced seek
medical attention immediately. CO poisoning can be determined by a carboxyhemoglobin test.
The following symptoms are related to CARBON MONOXIDE POISONING and should be
discussed with ALL members of the household:
1. MILD EXPOSURE: Slight headache, nausea, vomiting, fatigue (often described as “Flu-like”
symptoms).
2. MEDIUM EXPOSURE: Severe throbbing headache, drowsiness, confusion, fast heart rate.
3. EXTREME EXPOSURE: Unconsciousness, convulsions, cardio respiratory failure and death.
The above levels of exposure relate to healthy adults. Levels differ for those at high risk. Exposure
to high levels of carbon monoxide can be fatal or cause permanent damage and disabilities. Many
cases of reported carbon monoxide poisoning indicate that while victims are aware they are not
feeling well, they become so disoriented they are unable to save themselves by either exiting the
building, or calling for assistance. Also, young children and household pets may be the first affected.
Familiarization with the effects of each level is important.
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17. Cleaning Your Alarm
Your Alarm Should be Cleaned at Least Once a Year
You can clean the interior of your alarm (sensing chamber) by using compressed air or a vacuum
cleaner hose and blowing or vacuuming through the openings around the perimeter of the alarm.
The outside of the alarm can be wiped with a clean, dry cloth. Do not use water, detergents or cleaners
as they may damage the alarm.
NOTE: Do not insert fingers or cleaning items under the shield during cleaning.
If the alarm is in Fault mode, the alarm may be in need of cleaning. After cleaning, press the Test
button. If the fault does not clear, the alarm needs to be replaced.
• Never use detergent or other solvents to clean the unit.
• Avoid spraying air freshener, hair spray, or other aerosols near the alarm.
• Do not use a hair dryer to clean the alarm, as it may damage the alarm and impact performance.
• Do not paint the unit. Paint will seal the vents and interfere with the sensor’s ability to detect
smoke (smoke only models) or smoke and CO (combination smoke/CO models).
• Never attempt to disassemble the unit to clean inside. This action will void your warranty.
For combination smoke/CO models:
The following substances can affect the CO sensor and may cause false readings and damage to the
sensor: Methane, propane, isobutane, iso-propanol, ethyl acetate, hydrogen sulfide, sulfide dioxides,
alcohol based products, paints, thinner, solvents, adhesives, hair spray, aftershave, perfume, and some
cleaning agents.
Move the Alarm and place in another location prior to performing any of the following:
Figure 17
✘
✘
Shield
32
Staining or stripping wood floors or furniture
Painting
Wall papering
Using adhesives
Storing the unit in a plastic bag during any of the above projects will protect the sensors from damage.
When household cleaning supplies or similar contaminates are used, the area must be well ventilated.
WARNING: REINSTALL THE ALARM AS SOON AS POSSIBLE TO ENSURE CONTINUOUS
DETECTION.
18. Good Safety Habits
Develop and Practice a Plan of Escape
Prepare and practice a home escape plan twice a year, including drills at night. Know two ways out
of every room (door & window) and identify a meeting place outside the home where everyone will
gather once they have exited the residence. When two people have reached the meeting place,
one should leave to call 911 while the second person stays to account for additional family members.
Establish a rule that once you’re out, you never re-enter under any circumstance!
• Make a floor plan indicating all doors and windows and at least two (2) escape routes from each
room. Stories above ground level may need a rope or chain ladder.
• Have a family meeting and discuss your escape plan, showing everyone what to do in case of fire
and where to meet after they leave the house.
• Ensure that small children hear the alarm and wake when it sounds. They must wake up in order to
execute the escape plan. Practice allows all occupants to test your plan before an emergency.
You may not be able to reach your children. It is important they know what to do.
• Familiarize everyone with the sounds of the smoke/CO alarm and train them to leave your home
when they hear it.
• Current studies have shown smoke/CO alarms may not awaken all sleeping individuals, and that it
is the responsibility of individuals in the household that are capable of assisting others to provide
assistance to those who may not be awakened by the alarm sound, or to those who may be
incapable of safely evacuating the area unassisted.
• Install and maintain fire extinguishers on every level of the home and in the kitchen, basement and
garage. Know how to use a fire extinguisher prior to an emergency.
33
Fire Prevention
Never smoke in bed or leave cooking food unattended. Teach children never to play with matches or
lighters! Train everyone in the home to recognize the smoke alarm pattern and to leave the home using
their escape plan when it’s heard. Know how to do “Stop, Drop and Roll” if clothes catch on fire, and
how to crawl low under smoke. Install and
maintain fire extinguishers on every level
of the home and in the kitchen, basement
and garage.
NFPA (National Fire Protection Association)
Fire Safety in the Home: NFPA 72 is
intended to provide reasonable safety for
persons in family living units. Reasonable
fire safety can be produced through
the following three-point program: (1)
Minimizing fire hazards (2) Providing
fire-warning equipment (3) Having and
practicing an escape plan.
Smoke Detection – Are More Alarms
Desirable?
The required number of smoke alarms
might not provide reliable early warning
protection for those areas separated
by a door from the areas protected by
the required smoke alarms. For this reason, it is recommended that the resident consider the use of
additional smoke alarms for those areas for increased protection. The additional areas include the
basement, bedrooms, dining room, furnace room, utility room, and hallways not protected by the
required smoke alarms. The installation of smoke alarms in attics (finished or unfinished), garages, or
within 6 ft (1.8m) of a heating or cooking appliance is not normally recommended, as these locations
occasionally experience conditions that can result in improper operation. *
* Reference National Fire Protection Association (NFPA) standard 72
For your information, the National Fire Protection
Association’s Standard 72 reads: Where required
by other governing laws, codes, or standards for a
specific type of occupancy, approved single and
multiple-station smoke alarms shall be installed
as follows:
1. In all sleeping rooms and guest rooms
2. Outside of each separate dwelling unit sleeping
area, within 21 ft (6.4 m) of any door to a sleeping
room, with the distance measured along a path
of travel
3. On every level of a dwelling unit, including
basements
4. On every level of a residential board and care
occupancy (small facility), including basements
and excluding crawl spaces and unfinished attics
5. In the living area(s) of a guest suite
6. In the living area(s) of a residential board and
care occupancy (small facility)
34
California State Fire Marshal
Early warning fire detection is best achieved by the installation of fire detection equipment in all rooms
and areas of the household as follows: A smoke alarm installed in each separate sleeping area (in
the vicinity, but outside the bedrooms), heat or smoke detectors in the living rooms, dining rooms,
bedrooms, kitchens, hallways, attics, furnace rooms, closets, utility and storage rooms, basements and
attached garages.
FCC
Models 20SAR-VRF, SMACFEX-VRF
FCC ID: 2BQ4X-RGSDR-RW
Models 30CUAR-VRF, CUACFEX-VRF
FCC ID: 2BQ4X-RGCUDR-RW
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
CAUTION: The user is cautioned that changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with a minimum distance of 20cm between the
radiator and your body. This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
35
19. Service And Warranty
Ten-Year Limited Warranty
Kidde warrants that the enclosed alarm (but not the batteries) will be free from defects in material and
workmanship or design under normal use and service for a period of ten years from the date of purchase.
The obligation of Kidde under this warranty is limited to repairing or replacing the alarm or any part which we
find to be defective in material, workmanship or design (part replacement only, no installation), free of charge,
upon receiving the alarm with proof of date of purchase, postage and return postage prepaid, to Warranty
Service Department, Kidde, 1016 Corporate Park Drive, Mebane, NC 27302. Before shipping the product,
please remove the batteries from the battery compartment。
This warranty shall not apply to the alarm if it has been damaged, modified, abused or altered after the date
of purchase or if it fails to operate due to improper maintenance or inadequate power. Any implied warranties
arising out of this sale, including but not limited to the implied warranties of description, merchantability and
fitness for a particular purpose, are limited in duration to the above warranty period. In no event shall the
Manufacturer be liable for loss of use of this product or for any indirect, special, incidental or consequential
damages, or costs, or expenses incurred by the consumer or any other user of this product, whether due to a
breach of contract, negligence, strict liability in tort or otherwise.
The Manufacturer shall have no liability for any personal injury, property damage or any special, incidental,
contingent or consequential damage of any kind resulting from gas leakage, smoke, fire or explosion. Since
some states do not allow limitations of the duration of an implied warranty or do not allow the exclusion or
limitation of incidental or consequential damages, the above limitations or exclusions may not apply to you.
While this warranty gives you specific legal rights, you may also have other rights which vary from state to
state.
The above warranty may not be altered except in writing signed by both parties hereto. Your Kidde Alarm is
not a substitute for property, fire, disability, life or other insurance of any kind. Appropriate insurance cover-
age is your responsibility. Consult your insurance agent. Opening the unit will void the warranty. If there are
any differences between this printed warranty and the online limited warranty, then the terms of the online
warranty supersede those in this user guide or other printed materials. Visit www.kidde.com for the latest
warranty statement.
QUESTIONS OR FOR MORE INFORMATION
Call Kidde Product Support line at 1-800-880-6788
or contact us at www.kidde.com
Kidde
1016 Corporate Park Drive, Mebane, NC 27302
©2026 Kidde. All Rights Reserved.
Smoke: Conforms to UL STD 217. Combination
Smoke/CO: Conforms to UL STDS 217 and 2034.
