2-in-1 Smoke and
Carbon Monoxide Alarm
User Guide for Model KN-COSM-B-RF
Smart Wireless Network
2521-7203-01
For questions concerning your 2-in-1 Smoke and Carbon Monoxide
Alarm, please call our consumer hotline at 1-800-880-6788. For tips on
how to protect your home and family, visit www.kidde.com
For your convenience, write down the following information. If you call
our consumer hotline, these are the first questions you will be asked:
ATTENTION: Please take a few minutes to thoroughly read this
user guide which should be saved for future reference and
passed on to any subsequent owner.
Alarm Model Number
(located on back of the alarm):
Date of Manufacture
(located on back of the alarm):
Date of Purchase:
Where Purchased:
Clear Voice Instructions
2-in-1 Smoke and
Carbon Monoxide Alarm
User Guide
Congratulations
You are now able to protect your home and family
with Kidde.
The Kidde 2-in-1 Smoke and Carbon Monoxide
Alarm provides you with multiple options. Choose
the level of protection that is right for you:
• Install as a single unit
• Install multiple Kidde alarms that connect
wirelessly to communicate with each other in the
case of a smoke or CO event
• Use in conjunction with Kidde Fire Extinguisher
for complete home protection
This product is compatible with the Wink Hub
and the Wink App. Please see Wink Hub
documentation for instructions. UL and CSA have
not verified this compatibility.
3
1. What to do When the Alarm Sounds
Smoke Alarm Procedure..........................................................4
Carbon Monoxide Alarm Procedure ........................................ 5
Important Warning Statements ...... ........................................ 6
2. Introduction.......................................................................7
3. Fire Safety Information
Good Safety Habits.................................................................8
Escape Plan ...........................................................................8
Fire Prevention ..................................................... ....... ..........9
NRC Information ................................................................... 9
NFPA Required Protection .....................................................10
4. Carbon Monoxide Information...............................12-15
5. Product Features and Specications..................16-21
6. Installation Guide
How to Install ....................................................................... 22
Battery Replacement............................................................. 25
Where to Mount the Alarm.................................................. 25-29
7. Testing and Using the Alarm................................... 30
Smoke Alarm Silent Mode Feature .........................................31
Remote Smoke Alarm Silent Mode.........................................32
Low Battery Silence...............................................................32
Peak Level Memory............................................................... 33
Understanding Peak and Alarm Memory Signals.................... 33
8. Maintenance................................................................... 34
FCC Compliance Statement ................................................. 35
9. Troubleshooting Guide................................................36
10. Ten-Year Limited warranty.......................................37
Contents
4
Smoke Alarm Procedure
NEVER IGNORE THE SOUND OF THE ALARM!
Determining what type of alarm has sounded is easy with your
Kidde 2-in-1 Smoke and Carbon Monoxide Alarm. The voice
message warning system will inform you of the type of situation
occurring. Refer to the Product Features and Specications
section of this user guide for a detailed description of each
alarm pattern.
Smoke alarms are designed to minimize false alarms.
Cigarette smoke will not normally set off the 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 the cooking area. Large quantities of combustion particles
are generated from spills or when broiling. Using the fan on
a range hood which vents to the outside (nonrecirculating
type) will also help remove these combustion particles from
the kitchen.
If the alarm sounds, check for res rst. If a re is discovered,
follow these steps. Become thoroughly familiar with these
steps and review with all family members!
• Alert small children in the home.
• Leave immediately by your escape plan. Every second counts,
so don’t waste time getting dressed or picking up valuables.
• When leaving, don’t open any inside door without first feeling
its surface. If it is hot, or if you see smoke seeping through
cracks, don’t open that door! Instead, use an 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.
• Stay close to the floor if the air is smoky. 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 from a neighbor’s home. Not from
yours!
• Don’t return to your home until re ofcials say that it is all
right to do so.
Smoke Alarm Procedure
What to do When the Alarm Sounds
5
1) Operate the test/reset button;
2) Call your emergency services (Fire Department or 911);
3) Immediately move to fresh air – outdoors or by an open
door/window. Do a head count to check that all persons are
accounted for. Do not reenter the premises or move away
from the open door/window until the emergency services
responders have arrived, the premises have been aired out,
and your alarm remains in its normal condition.
4) After following steps 1–3, if the alarm reactivates within a 24-
hour period, repeat steps 1–3 and call a qualied appliance
technician to investigate sources of CO from fuel burning
equipment and appliances, and to inspect for proper
operation of equipment.
If problems are identied 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 the
equipment. Make sure that motor vehicles are not, or have
not been, operating in a garage attached or adjacent to the
residence.
Never restart the source of a CO problem until it has been
corrected. Never ignore the sound of the alarm!
If the alarm is sounding, pressing the test/reset button will
terminate the alarm. If the CO condition that caused the
alert in the first place continues, the alarm will reactivate.
If the unit alarms again within six minutes, it is sensing
high levels of CO which can quickly become a dangerous
situation.
WARNING: Activation of the CO alarm indicates the
presence of Carbon Monoxide (CO) which can kill you.
IF ALARM SIGNAL SOUNDS
Carbon Monoxide Alarm Procedure
Carbon Monoxide Alarm Procedure
fire department or 911
appliance technician phone number
6
Important Warning Statements
IMPORTANT: Read all instructions before installation and
keep this User Guide near the alarm for future reference.
Ionization-sensing alarms may detect invisible re 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. Home fires develop in different ways
and are often unpredictable. For maximum protection, Kidde
recommends that both ionization and photoelectric alarms
be installed.
WARNING: Removal of the alarm batteries will render
the alarm inoperative. This alarm requires a continuous
supply of electrical power – it will not work without power.
CAUTION: This alarm will only indicate the presence
of carbon monoxide at the sensor. Carbon monoxide
may be present in other areas.
This product is intended for use in ordinary indoor locations of
family living units. It is not designed to measure compliance
with Occupational Safety and Health Administration (OSHA),
commercial or industrial standards. It is not suitable for
installation in hazardous locations as defined in the
National Electric Code.
The installation of this device should not be used as a
substitute for proper installation, use and maintenance of
fuel burning appliances, including appropriate ventilation
and exhaust systems. It does not prevent CO from occurring,
nor can it solve an existing CO problem.
WARNING: This device is designed to protect
individuals from acute effects of carbon monoxide
exposure. It may 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. This
alarm has not been investigated for carbon monoxide
detection below 70 PPM.
Important Warning Statements
7
Introduction
Congratulations, you are now the owner of a Kidde
2-in-1 Smoke and Carbon Monoxide Alarm. Kidde
product - the first networked fire safety solution for
your home. The design and functionality of Kidde
products is based on years of study with fire safety
professionals who have saved families by helping
them be prepared in the event of an emergency.
Innovative Kidde products provide a system of
networked units around your home that alert your
family to danger. This Smart Wireless Network
automatically activates all Kidde devices as soon
as one alarm is triggered, letting everyone know
it is time to follow the family safety plan, exit the
house and proceed to the designated meeting
area. The modern and elegant look of Kidde is
designed for placement anywhere in your home
so it is always ready for use. Intuitive, simple
instructions will empower everyone in your family
to be a Kidde in a time of need.
With the new Kidde networked alert system, safety
is something you can plan.
Introduction
8
Fire Safety Information
Good Safety Habits –
Develop and Practice a Plan of Escape
• Install and maintain re 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.
• Make a oor plan indicating all doors and windows and at
least two (2) escape routes from each room. Second story
windows 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.
• Determine a place outside your home where you can all
meet if a fire occurs.
• Familiarize everyone with the sound of the smoke alarm
and train them to leave your home when they hear it.
• Practice a re drill at least every six months, including re
drills at night. 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. In an emergency you may not be able to reach
your children. It is important they know what to do.
Escape Plan
Prepare and practice a home escape plan twice a year,
including drills at night. Know two ways out of every room
(door and 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 reenter under any
circumstance!
Fire Safety Information
9Fire Safety Information
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 alarm pattern and
the voice message warning, and to leave the home using
their escape plan when it’s heard. Know how to “Stop, Drop
and Roll” if clothes catch on fire, and how to crawl low under
smoke. Install and maintain re 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. Second
level and higher occupied rooms with windows should have
an escape ladder.
Current studies have shown smoke alarms may not awaken
all sleeping individuals. It is the responsibility of individuals
in the household who 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.
There are situations in which a smoke alarm may not
provide effective protection against re as stated in the NFPA
Standard 72. For instance: a) smoking in bed, b) leaving
children home alone, c) cleaning with ammable liquids
such as gasoline.
NRC Information
Ionization type smoke alarms use a very small amount of
a radioactive element in the sensing chamber to enable
detection of visible and invisible combustion particles. The
radioactive element is safely contained in the chamber
and requires no adjustments or maintenance. This smoke
alarm meets or exceeds all government standards. It
is manufactured and distributed under license from the
U.S. Nuclear Regulatory Commission.
10
NFPA Required Protection
The National Fire Protection Association’s Standard 72
provides the following information:
Smoke Detection – Where required by applicable laws,
codes or standards for the specified occupancy, approved
single- and multiple-station smoke alarms shall be installed
as follows: (1) In all sleeping rooms. (2) Outside of each
separate sleeping area, in the immediate vicinity of the
sleeping rooms. (3) On each level of the dwelling, including
basements. Exception: In existing one- and two-family
dwellings, approved smoke alarms powered by batteries
are permitted.
Smoke Detection – Are More Smoke 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 householder
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 the smoke alarms in the kitchen,
attic (finished or unfinished) or garage is normally not
recommended, as these locations occasionally experience
conditions that can result in improper operation.
This equipment should be installed in accordance with the
National Fire Protection Association’s Standard 72 (NFPA,
Batterymarch Park, Quincy, MA 02269).
NOTIFY YOUR LOCAL FIRE DEPARTMENT AND
INSURANCE COMPANY OF YOUR SMOKE ALARM
INSTALLATION.
Fire Safety Information
11Carbon Monoxide Information
General Carbon Monoxide Information
NOTE: Many times throughout this User Guide, we will refer
to Carbon Monoxide as CO.
Carbon monoxide is a colorless, odorless and tasteless
poison gas that can be fatal when inhaled. CO inhibits the
blood’s capacity to carry oxygen.
Periodically review this alarm user guide and discuss your
CO alarm emergency procedure with all the members of
your family. Never ignore a CO alarm. A true alarm is an
indication of potentially dangerous levels of CO. CO alarms
are designed to alert you to the presence of CO before
an emergency – before most people would experience
symptoms of CO poisoning, giving you time to resolve the
problem calmly.
Determine if anyone in the household is experiencing
symptoms of CO poisoning. Many cases of reported CO
poisoning indicate that while victims are aware they are
not 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. You should take extra precautions to
protect high-risk persons from CO exposure because they
may experience ill effects from CO at levels that would not
ordinarily affect a healthy adult.
CAUTION (As Required by the California State Fire
Marshal)
“Early warning re detection is best achieved by the
installation of re detection equipment in all rooms and areas
of the household as follows: A smoke alarm installed in each
separate sleeping area (in the vicinity of, but outside of the
bedrooms), and 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.”
12
Symptoms of CO Poisoning
The following common symptoms are related to CO
poisoning and should be discussed with ALL members of
the household.
Mild Exposure:
Slight headache, nausea, vomiting, fatigue (often described
as “flu-like symptoms”).
Medium Exposure:
Severe throbbing headache, drowsiness, confusion,
fast heart rate.
Extreme Exposure:
Unconsciousness,convulsions,cardio-respiratory
failure, death.
If you experience even mild symptoms of CO poisoning,
consult your doctor immediately!
IMPORTANT: If the alarm sounds, it should be treated as a
potentially serious condition. See Carbon Monoxide Alarm
Procedure Section (at the beginning of this user guide).
Possible Sources of Carbon Monoxide
Inside your home, appliances used for heating and cooking
are the most likely sources of CO. Vehicles running in
attached garages can also produce dangerous levels of CO.
CO can be produced when burning any fossil fuel,
such as gasoline, 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:
• Automobiles, furnaces, gas ranges/stoves, gas clothes
dryers, water heaters, portable fuel-burning space heaters
and generators, fireplaces, wood-burning stoves and
certain swimming pool heaters.
• Blocked chimneys or ues, backdrafts and changes in air
pressure, corroded or disconnected vent pipes, loose or
cracked furnace exchangers.
• Vehicles and other combustion engines running in an open
or closed garage, attached or near a home.
• Burning charcoal or fuel in grills and hibachis in an
enclosed area.
Carbon Monoxide Information
13
Conditions that Can Produce Carbon Monoxide
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 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 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.
• Vehicles idling in an open or closed garage, or near a
home.
To be safe, know the possible sources of CO in your home.
Keep fuel-burning appliances and their chimneys and vents
in good working condition. Learn the early symptoms of
exposure, and if you suspect CO poisoning, move outside to
fresh air and get emergency help. Your first line of defense
is an annual inspection and regular maintenance of your
appliances. Contact a licensed contractor or call your local
utility company for assistance.
Carbon Monoxide Information
14
Information About Carbon Monoxide Alarms –
What They Can and Cannot Do
CO alarms provide early warning of the presence of CO,
usually before a healthy adult would experience symptoms.
This early warning is possible, however, only if your CO
alarm is located, installed and maintained as described in
this guide.
Because carbon monoxide is a cumulative poison, long-
term exposure to low levels may cause symptoms, as well
as short-term exposure to high levels. This Kidde unit has a
time-weighted alarm – the higher the level of CO present, the
sooner the alarm will be triggered.
This CO alarm can only warn you of the presence of CO.
It does not prevent CO from occurring, nor can it solve an
existing CO problem. If your unit has alarmed and you’ve
provided ventilation by leaving your windows and doors
open, the CO buildup may have dissipated by the time
help responds. Although your problem may appear to be
temporarily solved, it’s crucial that the source of the CO is
determined and that the appropriate repairs are made.
This CO alarm is designed to act as a monitor; it is not
designed for use as a short-term testing device to perform a
quick check for the presence of CO.
CO alarms have limitations. Like any other electronic device,
CO alarms are not foolproof. CO alarms have a limited
operational life. You must test your CO alarm weekly to
insure that it is operating properly at all times.
Carbon Monoxide Information
15
If your CO alarm fails to test properly, or if its self-diagnostic
test reveals a malfunction, immediately have the unit
replaced. This alarm will not monitor CO levels while in an
error condition.
CO alarms can only sense CO that reaches the unit’s
sensor. It’s possible that CO may be present in other
areas without reaching the alarm.
The rate at which CO reaches the alarm may be affected by:
• Doors or other obstructions.
• Fresh air from a vent, an open window or other source.
• The presence of CO on one level of the home and a CO
alarm installed on a different level. (For example, CO in the
basement may not reach an alarm on the second level.)
For these reasons, we recommend you provide complete
coverage by placing a smoke/CO alarm on every level of the
home. Please carefully read all information in the Installation
Guide section on properly installing this smoke/CO alarm.
CO alarms should not be used to detect the presence
of natural gas (methane), propane, butane or other
combustible fuels.
Instruct children never to touch, unplug or otherwise
interfere with the alarm. Warn children of the dangers of CO
poisoning.
Carbon Monoxide Information
16 Product Features and Specifications
Front View
Product Features and Specifications
Model KN-COSM-B-RF
Rear View
IMPORTANT ALARM REPLACEMENT INFORMATION:
Ten years after the initial power up, this alarm will “beep”
twice every 30 seconds to indicate that it is time to replace
the alarm. Replace the alarm immediately! It will not detect
CO in this condition.
To help identify the date to replace the alarm, a space has
been designated on the product label affixed to the back of
the alarm. Write the “replace by date” (ten years from power
up) in permanent marker on this label.
back view
installation
1. Voice Speaker
2. Sounder
3. Button and LEDs
4. DIP Switch
5. Battery Compartment
1 2
3
4
5
17Product Features and Specifications
This alarm detects combustion particles using the ionization
technique. It contains 0.9 microcurie of Americium 241,
a radioactive material (see NRC Information section).
Distributed under U.S. NRC License No. 32-23858-01E.
Manufactured in compliance with U.S. NRC safety criteria in
10 CFR 32.27. The purchaser is exempt from any regulatory
requirements. Do not try to repair the alarm yourself. Refer to
the instructions in the Warranty section for service.
Kidde 2-in-1 Smoke and Carbon Monoxide Alarms connect
to each other wirelessly to create the first Smart Wireless
Network for fire safety. When one of your Kidde alarms is
triggered, a wireless signal will be transmitted to activate
the rest of your Kidde alarms within 11 seconds, alerting
you if you are in other parts of the home. All other alarms will
activate and remain in alarm mode until the initiating unit is
silenced or a non-initiating unit is silenced via a press of that
unit’s button. Place Kidde alarms throughout your home for
comprehensive coverage, so that you will be alerted to any
smoke or CO danger no matter where you are in your home.
For instructions on how to set up your Kidde alarms
so that they communicate wirelessly, see the Installation
Guide section.
This alarm wirelessly interconnects with the following Kidde
product:
• Kidde 2-in-1 Smoke and Carbon Monoxide Alarm
(Model KN-COSM-B-RF)
The Kidde Smart Wireless Network may be expanded with
future Kidde products.
18
Alarm Features
• Independent smoke and carbon monoxide sensors.
• The smoke alarm takes precedence when both smoke and
carbon monoxide are present.
• Alarm/voice message warning system that alerts you to the
following conditions in the manner described below, thus
eliminating any confusion over which alarm is sounding:
– FIRE: The alarm/voice pattern is three long alarm beeps
followed by the verbal warning message “Fire! ” This
pattern is repeated until the smoke is eliminated. The red
LED will ash along with beeps.
– CARBON MONOXIDE: The alarm/voice pattern is four
short alarm beeps followed by the verbal warning
message “Warning, carbon monoxide” After four minutes
the alarm/voice pattern will sound once every minute until
the unit is reset, or the CO eliminated. The red LED will
flash while in alarm/voice mode.
– LOW BATTERY: When the batteries are low and need
replacing the red LED will ash and the unit will “chirp”
one time, followed by the warning message “Low
battery” This cycle will occur once every minute for the
rst hour. After the rst hour the red LED will continue
to flash every minute accompanied by only the “chirp”
sound. The voice message “Low battery” will sound once
every fifteen minutes during the chirp-only cycle. This will
continue for at least seven days.
• One “chirp” every 30 seconds is an indication that the
alarm is malfunctioning. If this occurs call the consumer
hotline at 1-800-880-6788.
• Loud 85 decibel alarm
• Oversized test button for easy activation
Product Features and Specifications
19
• Test button performs the following functions:
– Tests the electronics and veries proper unit operation
– Resets the unit during CO alarm
– Peak and Alarm Memory
– Activates smoke alarm Silent Mode feature
– Activates Low Battery Silence feature
• Easy-mount alarm attachment stud for quick, simple
installation
• Green and red LEDs that indicate normal operation and
alarm status
• Green LED:
– One ash every 30 seconds indicates the unit is
operating properly. (If red LED is also ashing, the unit
has malfunctioned.)
– One ash every two seconds indicates the unit is in
smoke alarm Silent Mode. (See Smoke Alarm Silent
Mode Feature section for more details.)
– One ash every second indicates Initiating Alarm and
one ash every 16 seconds indicates Alarm Memory.
(See Initiating Alarm and Alarm Memory sections for more
details.)
• Red LED: When a dangerous level of smoke or carbon
monoxide is detected the red LED will ash and the
corresponding alarm pattern will sound. If the unit
malfunctions, the red LED will ash and the unit will chirp
every 30 seconds indicating a system problem.
• Powered by three (3) AA batteries
• Battery lockout system prohibits installation without using
three batteries
Product Features and Specifications
20
Smoke Alarm
The smoke alarm monitors the air for combustion particles
that are produced when something is burning or smoldering.
When combustion particles in the smoke sensor reach a
specified concentration, the alarm/voice message warning
system will sound, and be accompanied by the flashing red
LED.
The smoke alarm takes precedence when both smoke
and carbon monoxide are present.
NFPA 72 states: Life safety from re 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. Fire warning systems for dwelling units
are capable of protecting about half of the occupants in
potentially fatal fires. Victims are often intimate with the fire,
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, other
strategies such as protection-in-place or assisted escape or
rescue are necessary.
Smoke alarms are devices that can provide early warning
of possible fires at a reasonable cost; however, alarms have
sensing limitations. 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. Home
fires develop in different ways and are often unpredictable.
For maximum protection, Kidde recommends that both
ionization and photoelectric alarms be installed.
A battery-powered alarm must have a battery of the specified
type, in good condition and installed properly.
AC powered alarms (without battery backup) will not operate
Product Features and Specifications − Smoke Alarm
21
if the AC power has been cut off, such as by an electrical fire
or an open fuse.
Smoke alarms must be tested regularly to make sure the
batteries 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, in walls, on roofs, on the other side
of a closed door or on a different floor.
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 maximum protection, a smoke
alarm should be installed in each sleeping area on every
level of a home.
Although smoke alarms can help save lives by providing
an early warning of a fire, they are not a substitute for an
insurance policy. Home owners and renters should have
adequate insurance to protect their lives and property.
Carbon Monoxide Alarm
The carbon monoxide (CO) alarm monitors the air for the
presence of CO. It will alarm when there are high levels of
CO present, and when there are low levels of CO present
over a longer period of time. When a CO condition matches
either of these situations, the alarm/voice message warning
system will sound and be accompanied by the flashing red
LED. The carbon monoxide sensor uses an electrochemical
technology.
Product Features and Specifications − Carbon Monoxide Alarm
22
Installation Guide
How to Install
1. Remove all your new Kidde wireless interconnect devices
from their respective packages and place them in front
of you.
2. Find the eight-position DIP switch located inside the
battery compartment (see Figure 1).
3. Select one of the units. You will dene the ID pattern of
your system by positioning the switches of the DIP switch
in a random pattern. The ID pattern will need to be the
same for each alarm. This ID pattern will differentiate your
alarm system from similar systems nearby. Do not use the
default ID pattern that your units are shipped with.
4. Use a pen or pencil to change the switches in each of
the Kidde wireless devices to match the pattern you
selected in Step 3. Ensure that the pattern sequence is
not reversed.
5. Power each unit after setting the ID pattern by installing
the batteries (see the Installing Batteries section). The
alarms only read the ID that has been set when they are
first supplied power.
back view
installation
Figure 1
Installation Guide
23
6. Push and hold the test button on each unit for at least
five seconds, or until all the devices produce an alarm.
If all the units do not produce an alarm, refer to the
Troubleshooting Guide at the end of the User Guide.
CAUTION: Due to the loudness of the alarm,
always stand an arm’s length away from the unit
when testing.
7. Install the alarm in accordance with the User Guide as
described in the Where to Mount the Alarm section and
repeat Step 6. Since wireless communication can be
interrupted by a number of factors, you must test your
alarms weekly to ensure proper communication between
alarms.
If your Kidde smoke alarms enter alarm mode, rst check
for a re. If a re does not exist and the test buttons have
not been activated on any of the units, it is likely that you
are receiving interference from a similar system nearby. In
this case, repeat the above steps and select a different DIP
switch pattern. Be sure to disconnect power and remove the
batteries before changing the switch positions.
The interconnect system should not exceed the NFPA
interconnect limit of 12 smoke alarms.
Kidde battery-powered alarms CAN ONLY BE
interconnected with other Kidde wireless alarms. Refer to
the User Guide supplied with your Kidde product for lists of
interconnect compatible models, brands and devices.
To help identify the date to replace the alarm, a space has
been designated on the product label affixed to the back of
the alarm. Write the “replace by date” (ten years from initial
power up) in permanent marker on the label (see Alarm
Replacement section for additional information).
Installation Guide
24
1st
2nd
3rd
Installing Batteries
Batteries were not installed at the factory and must be
installed for the unit to operate.
Install the three AA batteries in the back of the smoke/CO
alarm.
• Open battery door by lifting up on the lip at the bottom
edge of the alarm.
• The battery polarity markings on the bottom of the battery
compartment must be adhered to.
• Batteries must be installed in the sequence shown above.
If batteries seem difcult to install, they’re not being
installed in the proper sequence.
• Smoke/CO alarm will not engage the attachment stud (see
page 29) unless all three batteries are installed and the
battery door is closed. Removal of any or all batteries will
render the smoke/CO alarm inoperative!
• After the batteries are correctly installed the unit will beep
once, the red LED will ash, “Push Test Button” will be
played. The green LED will ash immediately after power
is applied, and then will ash every 30 seconds to display
normal operation.
CAUTION: Your smoke/CO alarm is sealed and the
cover is NOT removable!
Battery Door Closed
Installation Guide
Battery Door Open
25
Battery Replacement
If any form of battery failure is detected the red LED will ash
and the unit will “chirp” one time, followed by the warning
message “Low battery”. This cycle will occur once every
minute for the rst hour. After the rst hour, the red LED will
continue flashing accompanied by the chirp sound every
60 seconds. The voice message “Low battery” will sound
once every 15 minutes during the chirp-only cycle, and will
continue for at least seven days.
If the red LED ashes along with a chirp every 30
seconds, and is not followed by the voice message
“Low battery” as described above, your unit has
malfunctioned. Call our toll free consumer hotline at
1-800-880-6788 for instructions on how to return the unit.
Replace batteries with Alkaline Energizer E91. 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
smoke/CO alarm. A good safety measure is to replace the
batteries twice a year, at the same time you change your
clocks for daylight saving time. Constant exposure to high
or low temperatures or high humidity may reduce battery
life.
NOTE: Do not use Lithium batteries with this unit.
Where to Mount the Alarm
IMPORTANT: THIS ALARM MUST BE MOUNTED ON A
CEILING OR WALL. IT WAS NOT DESIGNED FOR USE
AS A TABLETOP DEVICE. INSTALL ONLY AS DETAILED!
For maximum protection, Kidde recommends the installation
of a smoke/CO alarm in the following locations: on each
level of a multilevel home, including every bedroom, hallway,
finished attic and basement. Put alarms at both ends of
bedroom, hallway or large room if hallway or room is more
than 30 ft. (9.1 m) long. If you have only one alarm, ensure
it is placed in the hallway outside of the main sleeping area
or in the main bedroom. Verify the alarm can be heard in all
sleeping areas.
Installation Guide
26
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 particles rise to the ceiling and spread
horizontally. Mounting the 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.
When mounting an alarm on the ceiling, locate it at a minimum
of 4" (10.2 cm) from the side wall (see Diagrams B and C).
If installing the alarm on the wall, use an inside wall with the
top edge of the alarm at a minimum of 4" (10.2 cm) and a
maximum of 12" (30.5 cm) below the ceiling (see Diagram C).
Sloped Ceiling Installation
The following information is from the National Fire Protection
Association and is listed in Standard 72. Install smoke alarms
on sloped, peaked or cathedral ceilings at, or within 3 ft. (0.9
m) of the highest point (measured horizontally) (see Diagram
A). NFPA 72 states “Smoke alarms in rooms with ceiling slopes
greater than 1 ft. to 8 ft. (0.3 m to 2.4 m) horizontally shall be
located on the high side of the room.” NFPA 72 also states “A
row of alarms shall be spaced and located within 3 ft. (0.9 m) of
the peak of the ceiling measured horizontally” (see Diagram B).
Mobile Homes
Modern mobile homes have been designed and built to be
energy efcient. Install smoke/CO alarms as recommended
above (refer to Where to Mount the Alarm section and Diagram
C). In older mobile homes that are not well insulated, extreme
heat or cold can be transferred from the outside to the inside
through poorly insulated walls and roofs. This may cause a
thermal barrier, which can prevent smoke from reaching an
alarm mounted on the ceiling. In such mobile homes install
your smoke/CO alarm on an inside wall with the top edge
of the alarm at a minimum of 4" (10 cm) and a maximum of
Installation Guide
27
12" (30.5 cm) below the ceiling (see Diagram C). 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,
install your alarm on an inside wall ONLY!
THIS EQUIPMENT SHOULD BE INSTALLED IN ACCORDANCE
WITH THE NATIONAL FIRE PROTECTION ASSOCIATION’S
STANDARD 72
(National Fire Protection Association,
Batterymarch Park, Quincy, MA 02269).
Recommended Locations
Diagram A
Diagram B
Diagram C
Installation Guide
F
IGURE 2
F
IGURE 3
F
IGURE 1
10.2 cm
10.2 cm
10.2 cm
10.2 cm
F
IGURE 2
F
IGURE 3
F
IGURE 1
10.2 cm
10.2 cm
10.2 cm
10.2 cm
F
IGURE 2
F
IGURE 3
F
IGURE 1
10.2 cm
10.2 cm
10.2 cm
10.2 cm
F
IGURE 2
F
IGURE 3
F
IGURE 1
10.2 cm
10.2 cm
10.2 cm
10.2 cm
Smoke Alarms for Minimum Protection
Smoke Alarms for Additional Protection
Ionization Type Smoke Alarms with
Silent Mode or Photoelectric Type
28
Where Not to Install
Do not install in garages, kitchens, furnace rooms
or bathrooms!
INSTALL AT LEAST 5 FEET AWAY FROM ANY FUEL
BURNING APPLIANCE.
Do not install within 3 ft. (0.9 m) of the following: The door to
a kitchen, or a bathroom that contains 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. Avoid
excessively dusty, dirty or greasy areas. Dust, grease or
household chemicals can contaminate the alarm’s sensors,
causing it not to operate properly. Place the alarm where
drapes or other objects will not block the sensors. Smoke
and CO must be able to reach the sensors for the alarm to
accurately detect these conditions. Do not install in peaks
of vaulted ceilings, A-frame ceilings or gabled roofs (see
Diagram A on previous page). Keep out of damp and humid
areas.
Install at least 1 ft. away from uorescent lights, since
electronic noise may cause nuisance alarms. Do not place
in direct sunlight and keep out of insect infested areas.
Extreme temperatures will affect the sensitivity of the smoke/
CO alarm. Do not install in areas where the temperature
is colder than 40 degrees Fahrenheit (4.4 Celsius) or
hotter than 100 degrees Fahrenheit (37.8 Celsius), such
as garages and unfinished attics. Do not install in areas
where the relative humidity (RH) is above 85%. Place away
from doors and windows that open to the outside. Smoke
alarms are not to be used with detector guards unless the
combination (alarm and guard) has been evaluated and
found suitable for that purpose.
Installation Guide
29
Mounting the Alarm
1. Choose a mounting location (wall or ceiling) and mark
the location with a pencil.
2. To ensure aesthetic alignment of the alarm with the
hallway or wall, the “A” line on the attachment stud should
be parallel with the hallway when ceiling mounting, or
vertical when wall mounting. See Figures 1 and 2.
3. Drill a hole through the pencil mark and use the
enclosed screw and anchor (see Figure 1) to secure the
attachment stud. Use 1/4" (0.25") drill bit for anchor holes.
Align the smoke/CO alarm with the attachment stud and
rotate clockwise (right) until the unit is aligned. Screw and
anchor accessories are supplied.
Figure 1 Figure 2
back view
installation
back view
installation
back view
installation
Installation Guide
30
Testing and Using the Alarm
The smoke alarm is operating once fresh batteries are
installed and testing is complete. When the smoke alarm
ionization chamber senses combustion particles, the horn
will sound a loud (85 decibels) temporal alarm until the
sensing chamber is cleared of smoke particles.
The test button has four purposes. It tests the unit’s
electronics, resets the alarm, activates the Smoke Alarm
Silent Mode feature (See page 31), and activates the Peak
Level Memory.
CAUTION: Due to the loudness (85 decibels) of
the alarm, always stand an arm’s length away
from the unit when testing.
When testing, ensure that all units activate in response to a
push to test from another unit. This will verify that changes in
your environment (i.e., moved furniture, addition of electronic
appliances) have not adversely affected the operation of
your wireless system.
Remote Push to Test: Test your Kidde alarm system by
activating the test button on any Kidde alarm for a minimum
of five seconds, or until all of the interconnected alarms
sound. When the other alarms respond, this verifies that
both the alarms and the interconnect system are functioning
properly.
It may take up to 12 seconds for your wireless interconnected
alarms to enter alarm mode in response to a remote push
to test.
If the alarm does not sound, the unit may have defective
batteries or other failure and you should call Kidde customer
service at 1-800-880-6788. If other interconnected alarms
do not produce an alarm, see the Troubleshooting Guide.
DO NOT use an open flame to test your alarm; you could
damage the alarm or ignite combustible materials and start
a structure fire.
Testing and Using the Alarm
31Testing and Using the Alarm
Erratic or low sound coming from your alarm may indicate a
defective alarm, and it should be returned for service.
To test: Press and hold the test/reset button until you hear
three long beeps, “Fire!” repeated twice, followed by 4 quick
beeps, “Warning, Carbon Monoxide” repeated twice.
Reset: If the the smoke/CO alarm is sounding a CO alarm,
pressing the test/reset button on any Kidde device will
silence the system. If the CO condition that caused the
alert continues, the alarm will reactivate. Reactivation times
depend on the amount of CO present.
Weekly testing is required!
If at any time the alarm does not perform as described,
verify the three batteries are installed correctly and that they
don’t need replacing.
Clean dust and other buildup off the unit. If it still doesn’t
operate properly call the consumer hotline at 1-800-880-
6788.
Smoke Alarm Silent Mode Feature
The smoke alarm Silent Mode feature has the capability
of temporarily desensitizing the smoke alarm circuit for
approximately eight minutes.
This feature is to be used only when a known condition,
such as smoke from cooking, activates the alarm. Activate
the smoke alarm Silent Mode feature by pushing the button
on the smoke alarm cover. If the smoke is not too dense, the
alarm will silence immediately and the voice will announce
“Hush mode activated”. The green LED will blink every two
seconds for approximately eight minutes to indicate that the
alarm is in a temporarily desensitized condition. The smoke
alarm will automatically reset after approximately eight
minutes and will sound again if combustion particles are still
present. The smoke alarm Silent Mode feature can be used
repeatedly until the air has been cleared of the condition
causing the alarm. Pushing the button while the unit is in
Silent Mode will end the smoke alarm Silent Mode period
and the voice will announce “Hush mode cancelled.”
32
Remote Smoke Alarm Silent Mode
You can silence all of the Kidde alarms in your home at once
by pressing the button on any single Kidde alarm to activate
the smoke alarm Silent Mode feature. This allows you to
silence an alarm that may be difficult to reach, even if it is
the initiating alarm. This feature should only be used when
a known alarm condition, such as smoke from cooking,
activates the alarm.
Low Battery Silence
When the batteries need to be replaced, the unit will
produce a low battery “chirp” and the voice will announce
“ Low battery.” once per minute. The Low Battery Silence
feature allows you to press the button on the alarm
producing the warning to disable the notification for about
10 hours. This gives you a chance to replace the battery at
a more convenient time without sacrificing your safety by
disconnecting the alarm from power. During this Low Battery
Silence period your alarm is performing normally and is not
desensitized.
NOTE: Dense smoke will override the smoke alarm Silent
Mode feature and sound a continuous alarm.
CAUTION: BEFORE USING THE SMOKE ALARM
SILENT MODE FEATURE, IDENTIFY THE SOURCE OF
THE SMOKE AND BE CERTAIN A SAFE CONDITION
EXISTS.
Peak Level Memory
If the CO sensor has detected a CO level of 100 PPM or
higher since last reset, it will be recorded by the Peak Level
Memory function. To access the Peak Level Memory press
the test/reset button. If a reading of 100 PPM or higher has
been recorded, the alarm will chirp followed by the voice
“Caution, carbon monoxide previously detected.” If you’ve
been away from home, this feature allows you to check if
there was a CO reading of 100 PPM or higher during your
absence. Pushing the test/reset button resets the memory.
The memory is also reset when the batteries are removed. If
Peak Level Memory has not been triggered, pushing the test
button will initiate the test sequence.
Testing and Using the Alarm
33Testing and Using the Alarm
Initiating Alarm
The green LED will ash every second while sounding an
alarm to signify that the alarm sensed a smoke or CO hazard.
This will only be displayed on the alarms that sensed the
hazard. The remaining interconnected alarm(s) will sound
but will not display the initiating indicator.
Alarm Memory Condition
The green LED will ash every 16 seconds signifying that
the alarm sensed a smoke or CO hazard. It will continue to
ash every 16 seconds until the test/reset button is pressed,
thus announcing the hazard and resetting the alarm.
If a smoke condition was detected, the alarm will chirp
followed by the voice “Fire! ”
Understanding Peak and Alarm Memory Signals
• If 100ppm or more CO was previously detected, there is
no LED indicator, but pushing the test button will give the
Peak Level Memory voice message mentioned above.
• If a CO alarm previously occurred, the green LED will
ash every 16 seconds (Alarm Memory). Pushing the test
button will clear CO Alarm Memory and initiate the test
sequence.
• If 100ppm or more CO was detected, and a smoke alarm
also occurred, the green LED will ash every 16 seconds
(alarm memory). Pushing the test button will give the
Smoke Alarm Memory “Fire!” message, and will clear
smoke alarm memory. Pushing the test button a second
time will give the Peak Level Memory voice message and
clear Peak Level Memory. A third button push will initiate
the test sequence.
• If a CO alarm (with less than 100ppm) and a smoke alarm
occurred, the green LED will ash every 16 seconds
(alarm memory). Pushing the test button will give the
Smoke Alarm Memory “Fire!” message, and will clear
smoke alarm memory. The green LED will continue to
ash every 16 seconds, alerting you of the previous CO
alarm. Pushing the test button a second time will clear CO
alarm memory and initiate the test sequence.
34
Maintenance
To keep your smoke/CO alarm in good working order, please
follow these simple steps:
• Verify unit alarm, lights and battery operation by pushing the
test/reset button once a week.
• Remove the unit from attachment stud and vacuum the
alarm cover and vents with a soft brush attachment once a
month to remove dust and dirt.
REINSTALL IMMEDIATELY AFTER CLEANING AND THEN
TEST USING THE TEST/RESET BUTTON!
• Never use detergents or other solvents to clean the unit.
• Avoid spraying air freshener, hair spray or other aerosols
near the smoke/CO alarm.
Do not paint the unit. Paint will seal the vents and interfere with
the sensor’s ability to detect smoke and CO. Never attempt to
disassemble the unit or clean inside. This action will void your
warranty. Move the smoke/CO alarm and place in another
location prior to performing any of the following:
• Staining or stripping wood oors or furniture
• Painting
• Wall papering
• Using adhesives
Maintenance
• If 100ppm or more CO was detected (Peak Level Memory
triggered), with a previous CO alarm and a smoke alarm,
the green LED will ash every 16 seconds (alarm memory).
Pushing the test button will give the Smoke Alarm Memory
“Fire!” message, and will clear smoke alarm memory.
Pushing the test button a second time will give the Peak
Level Memory voice message and clear Peak Level
Memory, but the green LED will continue to ash, alerting
you of the previous CO alarm. Pushing the test button a
third time will clear CO alarm memory and initiate the test
sequence.
35Maintenance
Storing the unit in a plastic bag during any of the above
projects will protect the sensors from damage. Do not place
near a diaper pail.
WARNING: Reinstall the smoke/CO alarm as soon as
possible to ensure continuous protection.
When household cleaning supplies or similar contaminates
are used, the area must be well ventilated. The following
substances can effect 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, paint, paint
thinner, solvents, adhesives, hair spray, aftershave, perfume
and some cleaning agents.
FCC Compliance Statement
This device has been designed, constructed and tested for
compliance with FCC Rules that regulate intentional and
unintentional radiators.
The user is not permitted to make any modifications to this
equipment or use it in any manner inconsistent with the
methods described in this User Guide, without express
approval from Kidde.
Doing so will void the user authority to operate this
equipment. 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.
The term “IC:” before the radio certication number only
signies that Industry of Canada technical specications were
met.
36
Problem Possible Cause Solution
Not all of the
alarms produce an
alarm signal when
the test button is
pushed on a unit.
Units signal an
alarm when no
fire is present and
none of the test
buttons have been
pushed.
Devices may not
all be on the same
ID pattern.
Devices may not
have power.
Button not pressed
long enough.
There may be too
much interference
between units.
Unit is set to the
same ID pattern as
a nearby system.
Unit is located
in area prone
to cause false
alarms.
Locate the 8-position DIP
switch on the back of each
unit and ensure that all of the
corresponding switches are set
the same. If an ID needs to be
changed: Remove batteries,
change the ID and reinstall
batteries.
Check to see if the green LED
blinks every 30 seconds. (This
tells you that it is receiving
power from the batteries.) If
not, make sure the batteries are
installed correctly.
Press and hold the button for a
minimum of five seconds.
Move the other units to a new
location and try again. You
should try to locate the wireless
units as close to each other as
possible.
Change the ID pattern of
your units by following the
instructions in How to Install
section. Make sure to remove
batteries from all units before
changing the switch positions.
Review Where Not to Install
section. Relocate the unit. Move
the other units to a new location.
Troubleshooting Guide
Wireless
interference.
Move the other units to a new
location.
Troubleshooting Guide
37
Ten-Year Limited Warranty
Warranty Coverage: The Manufacturer warrants to the original consumer
purchaser, that this product (except battery) will be free of defects in material
and workmanship for a period of Ten(10) years from date of purchase. The
Manufacturer’s liability hereunder is limited to replacement of the product, repair of
the product or replacement of the product with repaired product at the discretion
of the Manufacturer. This warranty is void if the product has been damaged by
accident, unreasonable use, neglect, tampering or other causes not arising
from defects in material or workmanship. This warranty extends to the original
consumer purchaser of the product only.
Warranty Disclaimers: 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, fire or explosion. Some states do not allow limitations on how long an
implied warranty lasts, so the above limitation may not apply to you. Some states
do not allow the exclusion or limitation of consequential or incidental damages, so
the above limitations or exclusions may not apply to you.
Legal Remedies: This warranty gives you specific legal rights and you may also
have other rights that vary from state to state.
Warranty Performance: During the above warranty period, your product will be
replaced with a comparable product if the defective product is returned in a postage
paid package to the following address: Kidde, Customer Service Department,
1016 Corporate Park Drive, Mebane, NC 27302 USA, together with proof of
purchase date. Please include a note describing the problem when you return
the unit. The replacement product will be in warranty for the remainder of the
original warranty period or for six months, whichever is longer. Other than the
cost of postage, no charge will be made for replacement of the defective product.
In many cases the quickest way to exchange your alarm is to return it to the
original place of purchase. If you have questions, call Kidde’s customer service
department.
IMPORTANT: Do not remove unit back cover. Back cover removal will void
warranty.
Your Kidde 2-in-1 Smoke and Carbon Monoxide Alarm is not a substitute for
property, disability, life or other insurance of any kind. Appropriate insurance
coverage is your responsibility. Consult your insurance agent.
Also, Kidde makes no warranty, express or implied, written or oral, including that
of merchantability or fitness for any particular purpose, with respect to the battery.
The above warranty may not be altered except in writing signed by both parties
hereto.
For questions or for more information, call our consumer hotline at 1-800-
880-6788 or contact us at our website at www.kidde.com
Kidde, 1016 Corporate Park Drive, Mebane, NC 27302
Limited Warranty
