Manufactured by
Resideo Technologies, Inc.
Scottsdale, AZ 85254
www.resideo.com
© 2025 Resideo Technologies, Inc. All Rights Reserved.
These products are manufactured by Resideo Technologies, Inc. and its aliates.
INTRODUCTION
Thank you for choosing First Alert® for your Smoke and Carbon Monoxide Alarm
needs. You have purchased a state-of-the-art Smoke & Carbon Monoxide Alarm
designed to help provide you with early warning (Heads-Up) of a smoke and/or carbon
monoxide danger. Please take the time to read this manual and make the Smoke &
Carbon Monoxide Alarm an integral part of your family’s safety plan.
Alarm Features
• Voice Alerts with Heads-Up Warning: Friendly voice tells you what the danger is
and its location.
• Interconnect: When one alarm sounds, all compatible alarms sound.
• Mobile alerts whether home or away
Installation Notes
• This unit will not alert hearing impaired residents. It is recommended that you
install special units which use devices like ashing strobe lights to alert hearing
impaired residents.
• This unit must be powered by six (6) Duracell 123, Energizer 123 or Huiderui 3V
CR123A batteries.
• Test this Smoke Alarm once a week. If the alarm ever fails to test correctly, have
it replaced immediately! If the alarm is not working properly, it cannot alert you
to a problem.
• Install in accordance with installation instructions, applicable codes and ordi-
nances and in a manner acceptable to the authority having jurisdiction. Check
with your local Fire Department for current requirements in your area.
SC5-01-V0
SC5 Wireless Smart Smoke &
Carbon Monoxide Alarm
SMCO600NV
Installation & Reference Manual
IMPORTANT! PLEASE READ CAREFULLY AND SAVE.
The warnings/limitations card and manual contains important information about
your Smoke Alarm’s operation. If you are installing this Alarm for use by others, you
must leave this manual—or a copy of it—with the end user.
Para el manual del usuario en español, por favor visite rstalert.com
M08-0785-000 L2 5/25 Rev A
BASIC SAFETY INFORMATION
IMPORTANT!
• Dangers, Warnings, and Cautions alert you to important operating instructions or to potentially
hazardous situations. Pay special attention to these items.
• This smoke and co alarm is approved for use in single-family residences. It is NOT designed
for marine or RV use.
• This Alarm must have battery power to operate.
• This Smoke Alarm cannot operate without working batteries. Removing the batteries for
any reason, or failing to replace the batteries at the end of their service life, removes your
protection.
• The Smoke Alarm will only indicate the presence of smoke that reaches the sensor.
• The Smoke Alarm is not designed to sense gas, heat or ames.
! WARNING!
• Installation of this unit must conform to the electrical codes in your area; Articles 210 and
300.3 (B) of NFPA 70 (NEC), NFPA 72, NFPA 101; SBC (SBCCI); UBC (ICBO); NBC (BOCA);
OTFDC (CABO), and any other local or building codes that may apply. Wiring and installation
must be performed by a licensed electrician. Failure to follow these guidelines may result in
injury or property damage.
• NEVER ignore any alarm. See “If Your Smoke Alarm Sounds” for more information on how to
respond to an alarm. Failure to respond can result in injury or death.
• The Silence Features are for your convenience only and will not correct a problem. See “Using
the Silence Features” for details. Always check your home for a potential problem after any
alarm. Failure to do so can result in injury or death.
• Never disconnect the power from an AC powered unit to stop an unwanted alarm. Doing so
will disable the unit and remove your protection. In the case of a true unwanted alarm open a
window or fan the smoke away from the unit.
• The alarm will reset automatically when it returns to normal operation. Never remove the
batteries from a battery operated unit to stop an unwanted alarm (caused by cooking smoke,
etc.). Instead open a window or fan the smoke away from the unit. The alarm will reset auto-
matically.
! CAUTION!
• Connect this unit ONLY to other compatible units. See “How To Install This Smoke Alarm” for
details. Do not connect it to any other type of alarm or auxiliary device.
• Connecting anything else to this unit may damage it or prevent it from operating properly.
• Do not stand too close to the unit when the alarm is sounding. It is loud to wake you in an
emergency. Exposure to the horn at close range may harm your hearing.
• Do not paint over the unit. Paint may clog the openings to the sensing chambers and prevent
the unit from operating properly.
• Be aware of various situations against which the smoke alarm may not be effective, for
example:
1. Fires where the victim is intimate with a aming initiated re; for example, when a person’s
clothes catch re while cooking;
2. Fires where the smoke is prevented from reaching the smoke alarm due to a closed door or
other obstruction;
3. Incendiary res where the re grows so rapidly that an occupant’s egress is blocked even
with properly located smoke alarms.
ABOUT SMOKE ALARMS
Types of Alarms
All these Smoke Alarms are designed to provide early warning of res if located, installed
and cared for as described in the user’s manual, and if smoke reaches the Alarm. If you are
unsure which type of Smoke Alarm to install, refer the National Fire Protection Association
(NFPA) Standard 72 (National Fire Alarm and Signaling Code) and NFPA 101 (Life Safety
Code). National Fire Protection Association, One Batterymarch Park, Quincy, MA 02269-
9101. Local building codes may also require specic units in new construction or in different
areas of the home.
Battery (DC) operated Smoke Alarms: Provide protection even when electricity fails, provid-
ed the batteries are fresh and correctly installed. Units are easy to install, and do not require
professional installation. However, they do not provide interconnected functionality.
AC powered Smoke Alarms: Can be interconnected so if one unit senses smoke, all units
Alarm. They do not operate if electricity fails. AC with battery (DC) back-up: will operate if
electricity fails, provided the batteries are fresh and correctly installed. AC and AC/DC units
must be installed by a qualied electrician.
Smoke Alarms for solar or wind energy users and battery backup power systems: AC pow-
ered Smoke Alarms should only be operated with true or pure sine wave inverters. Operating
this Alarm with most battery-powered UPS (uninterrupted power supply) products or square
wave or “quasi sine wave” inverters will damage the Alarm. If you are not sure about your
inverter or UPS type, please consult with the manufacturer to verify.
Smoke Alarms for the hearing impaired: Special purpose Smoke Alarms should be installed
for the hearing impaired. They include a visual Alarm and an audible Alarm horn, and meet
the requirements of the Americans With Disabilities Act. Can be interconnected so if one
unit senses smoke, all units Alarm.
Smoke Alarms are not to be used with detector guards unless the combination has been
evaluated and found suitable for that purpose.
All First Alert® Smoke Alarms conform to regulatory requirements, including UL217 and
are designed to detect particles of combustion. Smoke particles of varying number and
size are produced in all res.
Ionization technology is generally more sensitive than photoelectric technology
at detecting small particles, which tend to be produced in greater amounts by
aming res, which consume combustible materials rapidly and spread quickly.
Sources of these res may include paper burning in a wastebasket, or a grease
re in the kitchen.
Photoelectric technology is generally more sensitive than ionization technology
at detecting large particles, which tend to be produced in greater amounts by
smoldering res, which may smolder for hours before bursting into ame. Sourc-
es of these res may include cigarettes burning in couches or bedding.
For maximum protection, use both types of Smoke Alarms on each level and in every
bedroom of your home.
In general, install combination Smoke and Carbon Monoxide Alarms:
• On every level of your home, including nished attics and basements.
• Inside every bedroom, especially if people sleep with the door partly or completely
closed.
• In the hall near every sleeping area. If your home has multiple sleeping areas, install
a unit in each. If a hall is more than 40 feet (12 meters) long, install a unit at each
end.
• At the top of rst-to-second oor stairs and at the bottom of the basement stairs.
• For additional coverage, install Alarms in all rooms, halls, and storage areas, where
temperatures normally remain between 40˚ F and 100˚ F (4.4˚ C and 37.8˚ C).
• When installing on the ceiling, place the Alarm as close to the center as possible.
• When installing on the wall, the top edge of Smoke Alarms should be placed be-
tween 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling line.
• In either case, install at least 4 inches (102 mm) from where the wall and ceiling
meet. See “Avoiding Dead Air Spaces” for more information.
NOTE: For any location, make sure no door or other obstruction could keep carbon
monoxide or smoke from reaching the Alarm.
FIRE SAFETY TIPS
1. Follow safety rules and prevent hazardous situations:
2. Use smoking materials properly. Never smoke in bed.
3. Keep matches or lighters away from children;
4. Store ammable materials in proper containers;
5. Keep electrical appliances in good condition and don’t overload electrical circuits;
6. Keep stoves, barbecue grills, replaces and chimneys grease- and debris-free;
7. Never leave anything cooking on the stove unattended;
8. Keep portable heaters and open ames, like candles, away from ammable
materials;
9. Don’t let rubbish accumulate. Keep Alarms clean, and test them weekly. Replace
Alarms immediately if they are not working properly. Smoke Alarms that do not
work cannot alert you to a re. Keep at least one working re extinguisher on
every level, and an additional one in the kitchen. Have re escape ladders or other
reliable means of escape from an upper level in case stairs are blocked;
10. Have an escape plan and practice it regularly.
INSTALLATION
WHERE TO INSTALL THIS ALARM
Minimum coverage for Smoke Alarms, as recommended by the National Fire Protection
Association (NFPA), is one Smoke Alarm on every oor, in every sleeping area, and in every
bedroom (See “Regulatory Information For Smoke Alarms” for details on the NFPA recom-
mendations).
For CO Alarms, the National Fire Protection Association (NFPA) recommends that a CO
Alarm should be centrally located outside of each separate sleeping area in the immediate
vicinity of the bedrooms. For added protection, install additional CO Alarms in each separate
bedroom, and on every level of your home.
! WARNING!
This product is intended for use in ordinary indoor locations of family living units. It is not de-
signed to measure compliance with Occupational Safety and Health Administration (OSHA)
commercial or industrial standards.
NOTE: For added protection, install an additional Smoke/CO Alarm at least 15 feet (4.6
meters) away from the furnace or fuel burning heat source where possible. In smaller homes
or in manufactured homes where this distance cannot be maintained, install the Alarm as
far away as possible from the
furnace or other fuel burning
source. Installing the Alarm
closer than 15 feet (4.6 me-
ters) will not harm the Alarm,
but may increase the frequen-
cy of unwanted alarms.
Smoke Alarm
One on every level and
in every bedroom
Fire Extinguisher
One on every level, plus
kitchen and garage
Carbon Monoxide Alarm
One on every level and in
every bedroom
GARAGE
BASEMENT
LIVING ROOM KITCHEN
BEDROOMBEDROOMHALLWAY
CO
CO
CO CO CO
WHERE NOT TO INSTALL THIS ALARM
FOR BEST PERFORMANCE, IT IS RECOMMENDED YOU AVOID INSTALLING SMOKE/
CO ALARMS IN THESE AREAS:
• In garages, furnace rooms, crawl spaces and unnished attics. Avoid extremely
dusty, dirty or greasy areas.
• Where combustion particles are produced. Combustion particles form when some-
thing burns. Areas to avoid include poorly ventilated kitchens, garages, and furnace
rooms. Keep units at least 10 feet (3 meters) from the sources of combustion
particles (stove, furnace, water heater, space heater) if possible. In areas where a
20-foot (6 meter) distance is not possible – in modular, mobile, or smaller homes,
for example – it is recommended the Smoke Alarm be placed as far from these
fuel-burning sources as possible. The placement recommendations are intended to
keep these Alarms at a reasonable distance from a fuel-burning source, and thus
reduce “unwanted” Alarms. Unwanted Alarms can occur if a Smoke Alarm is placed
directly next to a fuel-burning source. Ventilate these areas as much as possible.
• Within 5 feet (1.5 meters) of any cooking appliance. In air streams near kitchens.
Air currents can draw cooking smoke into the smoke sensor and cause unwanted
Alarms.
• In extremely humid areas. This Alarm should be at least 10 feet (3 meters) from a
shower, sauna, humidier, vaporizer, dishwasher, laundry room, utility room, or other
source of high humidity.
• In direct sunlight.
• In turbulent air, like near ceiling fans or open windows. Blowing air may prevent
smoke from reaching the sensors.
• In areas where temperature is colder than 40˚ F (4.4˚ C) or hotter than 100˚F (37.8˚
C). These areas include non air-conditioned crawl spaces, unnished attics, uninsu-
lated or poorly insulated ceilings, porches, and garages.
• In insect infested areas. Insects can clog the openings to the sensing chamber.
HOW TO INSTALL THIS ALARM
IMPORTANT!
This Smoke/CO Alarm is designed to be mounted on either the ceiling or wall (if
allowed by local codes). Read “Where to Install This Alarm” and “Where This Alarm
Should Not Be Installed” before you begin installation.
Tools you will need: a Drill and Philips head screwdriver.
The Mounting Bracket: Not pre-installed.
1. Mount the bracket to the ceiling or wall
using the provided screws (#6 x 3/4
in.[19 mm]).
2. Align the slots and hold the Alarm base
rmly.
3. Twist the mounting bracket clockwise
to fasten.
THE PARTS OF THIS SMOKE/CO ALARM
1. Mounting Bracket
2. Mounting Slots
3. SMCO600NV Alarm
4. Turn this way to remove from bracket
5. Turn this way to attach to bracket
6. Battery Compartment Door
SC5_24-V0
5
4
6
3
1
2
2
FOLLOW THESE SIMPLE STEPS
The basic installation of this Smoke/CO Alarm is similar whether you want to install
one Alarm, or interconnect more than one Alarm.
1. Start with setup in the First Alert by Resideo App prior to mounting, . When
prompted scan the QR code on the side or back of the Alarm or on the rst
page of the Quick Start Guide.
2. Install the mounting bracket to the wall or ceiling following the
guidelines in the “Where to Install” section. NOTE: Do not over tighten
screws!
SC5_21-V0
3. If not done so already, remove the battery tab to power the Alarm.
4. Position the base of the Alarm over the mounting bracket, and turn the Alarm clock-
wise (right) until the unit is in place. If wall mounted, adjust unit so words are level.
5. If the Green power indicator light does not light, then recheck all battery connec-
tions. See “Testing and Maintenance” section for the proper battery installation
procedure. If all batteries are properly installed and the Green power indicator still
does not light, the unit should be replaced immediately. NOTE: This light is not
continuously lit to conserve battery power.
6. Test each Alarm. Press and hold the Test/Silence button until the unit Alarms. When
testing a series of interconnected units, each unit must be tested individually. Make
sure all units alarm when tested.
• Less than 12 inches (305 mm) away from uorescent lights. Electrical “noise” can
interfere with the sensor.
• In “dead air” spaces.
AVOIDING DEAD AIR SPACES
“Dead air” spaces may prevent smoke from reaching the Smoke Alarm. To avoid dead
air spaces, follow installation recommendations below.
On ceilings, install Smoke Alarms as close to the center of the ceiling as possible. If
this is not possible, install the Smoke Alarm at least 4 inches (102 mm) from the wall
or corner.
For wall mounting (if allowed by building codes), the top edge of Smoke Alarms should
be placed between 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling
line, below typical “dead air” spaces.
On a peaked, gabled, or cathedral ceiling, install the rst Smoke Alarm within 3 feet (0.9
meters) of the peak of the ceiling, measured horizontally. Additional Smoke Alarms
may be required depending on the length, angle, etc. of the ceiling’s slope. Refer to
NFPA 72 for details on requirements for sloped or peaked ceilings.
WIRELESS INTERCONNECT
“SMART INTERCONNECT” FEATURE
This Alarm includes “Smart Interconnect” which enables the Alarm to be interconnect-
ed with other First Alert® and BRK SC5 Wireless Smoke and CO Alarms and Google
Nest Protect Alarms. When smoke is detected, all Alarms will sound the smoke horn
pattern. When CO is detected, “Smart Interconnect” Alarms will sound the CO horn
pattern. Alarms that do not have the “Smart Interconnect” feature will remain silent
during a CO Alarm. The initiating alarm LED Halo will blink red and sound the alarm, the
interconnected units will sound the alarm but will not display the red LED Halo blink.
NOTE: Wireless interconnect is achieved through the First Alert by Resideo app with
other SC5 alarms and Google Nest Protect.
WARNING
Install alarms and test to assure range and reliability of interconnec-
tion throughout the house.
!
• Keep in mind that some features of a home may reduce the interconnect range and
reliability of interconnection, including the number of oors, number/size of rooms,
furniture, type of building material, suspended ceilings, ductwork, large metallic
appliances and metal studs. This kind of interference may be xed by adding more
First Alert alarms that can route wireless signals around any various obstructions.
• Make sure you test your alarms for proper interconnection via the weekly testing.
NOTE: If you have both AC and DC devices, press and release the test button on the
AC device to test the Interconnect feature on all devices.
Wireless Frequency: This alarm supports wireless frequency of 2.4Ghz and 5Ghz. For
best results, recommended to use with a 802.11 b/g/n/ac router.
Adding Additional Alarms: Simply follow the instructions on your First Alert app to
add additional alarms to your account.
Identication of Events: If your alarm sounds, it is important to rst identify the type
of alarm.
To determine which Alarm initiated an Alarm, see table:
During an Alarm
On Initiating Alarm(s): Red LED(s) ashes (ash) rapidly
On All Other Alarms: Red LED is Off
When the Smoke Alarm is Silenced
The Smoke Alarm will remain silent for
up to 10 minutes, then return to normal
operation.
If the smoke has not cleared–or contin-
ues to increase–the device will go back
into alarm.
When the CO is Silenced
The CO Alarm will remain silent for up to 6
minutes.
After 6 minutes, if CO levels remain potentially
dangerous the horn will start sounding again.
WHAT TO DO IN CASE OF FIRE
• Don’t panic; stay calm. Follow your family escape plan.
• Get out of the house as quickly as possible. Don’t stop to get dressed or collect
anything.
• Feel doors with the back of your hand before opening them. If a door is cool, open
it slowly.
• Don’t open a hot door. Keep doors and windows closed, unless you must escape
through them.
• Cover your nose and mouth with a cloth (preferably damp). Take short, shallow
breaths.
• Meet at your planned meeting place outside your home.
• Do a head count to make sure everybody got out safely.
• Call the Fire Department as soon as possible from outside. Give your address, and
name.
• Never go back inside a burning building for any reason.
• Contact your Fire Department for ideas on making your home safer.
USING THE SILENCE FEATURES
! WARNING!
• The Silence Feature is intended to temporarily silence the horn while you identify
and correct the problem. Do not use the Silence Feature in emergency situations. It
will not correct a CO problem or extinguish a re.
• The Silence Feature can temporarily quiet an unwanted alarm for several minutes.
You can silence this Smoke/CO Alarm by pressing and releasing the Test/Silence
button on the alarm cover.
• After the Test/Silence button is released, the Alarm Voice will say “Horn silenced,
detector active.” The Red LED blinks during the silence mode.
• Alarms cannot be silenced if smoke levels are too high.
“ALARM-MOVE TO FRESH AIR”
If the alarm horn sounds 4 beeps, pause, 4 beeps, pause move everyone to a source
of fresh air. Note: This initiating CO detector’s Halo LED will also ash Red.
RESPONDING TO AN ALARM
! WARNING!
• If the unit alarms and you are not testing the unit, it is warning you of a potentially
dangerous situation that requires your immediate attention. NEVER ignore any
alarm. Ignoring the alarm may result in injury or death.
• Never remove the batteries from a battery operated Smoke/CO Alarm to stop an
unwanted alarm (caused by cooking smoke, etc.). Removing batteries disables
the alarm so it cannot sense smoke, and removes your protection. Instead open a
window or fan the smoke away from the unit. The alarm will reset automatically.
• If the unit alarms get everyone out of the house immediately.
• Alarms have various limitations. See “General Limitations of Smoke/CO Alarms” for
details.
• Actuation of your CO Alarm indicates the presence of carbon monoxide (CO) which
can KILL YOU. In other words, when your CO Alarm sounds, you must not ignore it!
WHAT TO DO FIRST: IDENTIFY THE TYPE OF ALARM SIGNAL
IF THE CO ALARM SIGNAL SOUNDS:
1. Press and release the Test/Silence button.
2. Call your emergency services, re department or 911. Write down the number of your
local emergency service here: _______________________________________________________
3. Immediately move to fresh air—outdoors or by an open door or window. Do a head
count to check that all persons are accounted for. Do not re-enter the premises, or
move away from the open door or window until the emergency services responder has
arrived, the premises have been aired out, and your CO Alarm remains in its normal
condition.
4. After following steps 1-3, if your CO Alarm reactivates within a 24-hour period, repeat
steps 1-3 and call a qualied 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 identied during this inspection have the equip-
ment serviced immediately. Note any combustion equipment not inspected by the
technician, and consult the manufacturers’ instructions, or contact the manufacturers
directly, for more information about CO safety and this equipment. Make sure that
motor vehicles are not, and have not, been operating in an attached garage or adjacent
to the residence. Write down the number of a qualied appliance technician here:
_______________________________
NOTE: A qualied appliance technician is dened as “a person, rm, corporation, or com-
pany that either in person or through a representative, is engaged in and responsible for
the installation, testing, servicing, or replacement of heating, ventilation, air conditioning
(HVAC) equipment, combustion appliances and equipment, and/or gas replaces or other
decorative combustion equipment.”
AFTER AN ALARM
After the emergency responders arrive, the premises aired out, and your CO Alarm remains in its
normal condition, you can check what the highest carbon monoxide level sensed was by initiating
a self test. The highest level of CO is announced during the test. The maximum level will automati-
cally reset after the message is played.
TESTING & MAINTENANCE CONTINUED
REGULAR MAINTENANCE
• This unit has been designed to be as maintenance-free as possible, but there are a
few simple things you must do to keep it working properly:
• Test it at least once a week.
• Clean the Smoke/CO Alarm at least once a month; gently vacuum the outside of the
Smoke/CO Alarm using your household vacuum’s soft brush attachment. Test the
Smoke/CO Alarm. Never use water, cleaners or solvents since they may damage the
unit.
• If the Smoke/CO Alarm becomes contaminated by excessive dirt, dust and/or grime,
and cannot be cleaned to avoid unwanted alarms, replace the unit immediately.
• If the green power LED ashes 2 times every minute (horn is silent) it means that
the Alarm needs to be cleaned as indicated above. If green light continues to ash,
replace Alarm.
• Relocate the unit if it sounds frequent unwanted alarms. See “Where This Alarm
Should Not Be Installed” for details.
• When the battery becomes weak, the voice announcement will annunciate every
minute for 5 minutes, then the Alarm will “chirp” (the low battery warning), and the
Voice will say “Replace battery in [Location, example “Basement”].” This warning
should last 7 days, but you should replace the batteries immediately to continue
your protection. The Halo LED will ash On for 0.2 seconds/Off every minute.
• Protect or cover the alarm when doing any maintenance to home i.e. sanding oors,
painting, drywall patching, etc. to prevent contamination.
REPLACING THE BATTERIES:
Your Smoke/CO Alarm requires six (6) Duracell 123, Energizer 123 or Huiderui CR123A
batteries. These batteries are available at many local retail stores.
! WARNING!
• Always use the exact batteries specied by this User’s Manual. DO NOT use re-
chargeable batteries. Clean the battery contacts and also those of the device prior to
battery installation. Install batteries correctly with regard to polarity (+ and -).
• Please dispose of or recycle used batteries properly, following any local regulations.
Consult your local waste management authority or recycling organization to nd an
electronics recycling facility in your area. DO NOT DISPOSE OF BATTERIES IN FIRE.
BATTERIES MAY EXPLODE OR LEAK.
! WARNING!
Keep battery out of reach of children. In the event a battery is swallowed, immediately
contact your poison control center, your physician, or the National Battery Ingestion hot
line at 202-625-3333 as serious injury may occur.
! IMPORTANT!
Actual battery service life depends on the Alarm and the environment in which it is
installed. All the batteries specied above are acceptable replacement batteries for this
unit. Regardless of the manufacturer’s suggested battery life, you MUST replace the
batteries immediately once the unit starts “chirping” (the “low battery warning”).
NOTE: All batteries must be replaced at the same time with new batteries.
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SILENCING THE LOW BATTERY WARNING
This Silence Feature can temporarily quiet the low battery warning “chirp” for up to 8 hours.
Press and release the Test/Silence button on the Alarm cover until you hear the acknowledge
“chirp”. When low battery is silenced, the unit will return to normal operation for 8 hours. Low
battery silence cannot be deactivated.
Once the low battery warning “chirp” Silence Feature is activated, the unit continues to ash
the green light once a minute for 8 hours. After 8 hours, the low battery “chirp” will resume.
The Alarm will continue to operate as long as AC power is supplied. However, replace the
batteries as soon as possible, to maintain protection in event of a power outage.
To silence alarms in an interconnected series: To silence an interconnected series of Smoke/
CO Alarms, you must press the Test/Silence button on the initiating alarm (The unit with the
ashing red light; the red light will be off on all other Alarms.). If you press the Test/Silence on
any other Alarm, it will only silence that unit, not the whole interconnected series.
SILENCING THE END OF LIFE SIGNAL
This Silence Feature can temporarily quiet the End of Life warning “chirps” for 2 days. You
can silence the End of Life warning “chirps” by pressing the Test/Silence button. The horn
will chirp, acknowledging that the End of Life Silence Feature has been activated. After ap-
proximately 2 days, the End of Life “chirp” will resume. The alarm end-of-life chirp can not be
silenced after 14 days following the initial end-of-life signal.
The Alarm will also provide an audible End-of-Life Signal approximately 10 years after instal-
lation to remind you to replace the unit. Optionally, an EOL Heads-Up can be enabled which
will notify the customer 2 weeks prior to EOL. The Heads-Up silence will last 2 weeks or until
EOL begins. Also when EOL is silenced, the green power led will continue to blink 5 times per
minute.
Action
Normal Operations
If Alarm is Not Operat-
ing Properly (MALFUNC-
TION SIGNAL)
Alarm has reached its
End of Life
Smoke Alarm is
Silenced
CO Alarm is Silenced
Alarm Levels of CO are
Detected
Smoke is Detected
If Battery Becomes
Low
When You Test the
Alarm
What You Will See & Hear
Voice: Silent; Power LED: Flashes once every minute on DC Alarm;
constant Green on AC Alarm. Horn: Silent
Voice: “Detector error in [Location, example “Basement”], please see
manual.” Repeated every minute; Horn: 3 chirps every minute; Halo
LED: Flashes 2 amber ashes once a minute.
Voice: “Alarm has reached the end of its life. Replace the alarm in the
<location>. Replace now.” Horn: 5 chirps. Power LED: 5 ashes. Halo
LED: 1 amber ash. The signals are repeated every minute.
Voice: “The Smoke Alarm is Silenced”; Horn: Off; Halo LED: Flashes
Red.
Voice: “The Carbon Monoxide Alarm is Silenced” ; Horn: Off; Halo LED:
Red ashes in the same pattern as an active alarm.
Horn: 4 fast beeps, pause, 4 fast beeps, pause*; Halo LED: Flashes red
in sync with the horn. Voice (repeated every 5.7 seconds): The rst
voice announcement says “Emergency” and second “Carbon Monoxide
Detected”. If the customer has specied a location the next will be “in
the <room>, if the alarm may be silenced, “Press to Silence”; Halo LED:
Flashes Red.
*NOTE: If unit goes into CO Alarm, the regular 4 beeps-brief pause
cycle will repeat for ve minutes. After ve minutes, the pause will
increase to one minute.
Horn: 3 beeps, pause, red Halo LED ashes; Voice (repeated every 4
seconds): The rst voice announcement says “Emergency” and second
“Smoke Detected”. If the customer has specied a location the next
will be “in the <room>, if the alarm may be silenced, “Press to Silence”;
Halo LED: During Alarm: Flashes Red in sync with the horn pattern.
NOTE: If using the app to remotely silence the device, the user must
check for smoke/re at the initiating alarm.
Voice: “Replace battery in [Location, example “Basement”].” Repeated
every minute for 5 minutes; Horn: chirps once a minute. Halo LED: 1
amber ash every minute.
Voice: “This is only a test. The alarm will sound. The alarm is loud. The
test will start in 5 seconds. Press to cancel. 5 4 3 2 1” “Testing Smoke”;
The Horn will sound 3 beeps, and red halo ashes – pause – 3 beeps
and red halo ashes; Next the Alarm Voice will say “Testing Carbon
Monoxide” Horn will sound 4 beeps and red halo ashes – pause – 4
beeps and red halo ashes. The Alarm Voice will say “The highest level
of Co was XXX ppm “ “Attempting interconnect test, this may take a
minute”. Red Pulse for 24 seconds, tone and then say “Test Complete”
“Everything looks good”.; Power LED: Off
DC Powered Units
1. Turn the Alarm left (counterclockwise) to detach it from the base.
2. Open the battery compartment.
3. Remove the old batteries.
4. Holding the device with the door at the bottom, starting from the left hand side,
install the new batteries by inserting them into the battery compartment. Match the
polarity on the batteries with the polarity on the unit. Conrm that all batteries all
are ush before closing the battery door.
5. Close the battery compartment door.
6. Position the base of the Alarm over the mounting bracket, and turn the Alarm clock-
wise (right) until the unit is in place.
7. Test the device to ensure proper operation.
TESTING & MAINTENANCE
WEEKLY TESTING
! WARNING!
• NEVER use an open ame of any kind to test this unit. You might accidentally dam-
age or set re to the unit or to your home. NEVER use vehicle exhaust! Exhaust may
cause permanent damage and voids your warranty.
• If the Alarm ever fails to test properly, replace it immediately. Products under war-
ranty may be returned to the manufacturer for replacement. See “Limited Warranty”
at the end of this manual.
• If testing with canned smoke only use a short burst of canned smoke. If smoke
concentration in the sensor is too high an alarm cannot be silenced.
! CAUTION!
It is important to test this unit every week to make sure it is working properly. Using the
test button is the recommended way to test this Smoke/CO Alarm.
You can test this Smoke/CO Alarm by pressing and releasing the Test/Silence button
on the Alarm cover.
Activate the Alarm test, reset or silence function by use of a nger or thumb. Use of
any other instrument is strictly prohibited.
During testing, you will see and hear the following sequence:
• The Alarm Voice announces “This is only a test. The alarm will sound. The alarm is
loud. The test will start in 5 seconds. Press to cancel. 5 4 3 2 1” “Testing Smoke”
The Horn will sound 3 beeps, and red halo ashes – pause – 3 beeps and red halo
ashes.
• Next the Alarm Voice will say “Testing Carbon Monoxide” Horn will sound 4 beeps
and red halo ashes – pause – 4 beeps and red halo ashes. The Alarm Voice an-
nounces “The highest level of CO was XXX ppm “ “Attempting interconnect test, this
may take a minute”. Red Pulse for 24 seconds, tone and then say “Test Complete”
“Everything looks good”.
If the unit does not alarm, make sure the batteries are correctly installed, and test
again. If the unit still does not alarm, replace it immediately.
SC5-28-V0
TEST
