• Separate sensors to detect
smoke and CO; the two alarm
systems work independently
• Voice with programmable
• Separate audible and
visual signals to indicate
alarm levels of smoke or CO
• Sealed-In Lithium Battery —
Sealed-in lithium power supply;
no battery replacement
UL STD 217
required over the 10 year
life of the alarm.
UL STD 2034
Model PC910V
M08-0408-004 K1 05/13 Printed in Mexico
This user’s manual contains important information about your
Combination Carbon Monoxide & 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
For First Time and When Activating Alarm
1. Activate Alarm (If the battery
has not been activated,
perform Step 8 on page 3).
Alarm Will Say:
“Welcome, First Alert Carbon
Monoxide and Smoke Alarm.”
“No location programmed” if first
time or “[Location, example:
“Kitchen”] location programmed”
after activating Alarm.
“To select location, press and
hold test button now.”
2. Press & Hold Test Button if
you would like to program the
location or change the location
of the Alarm. Release button
after Alarm responds.
“To save location, press and hold
test button after location is
heard.” Alarm will speak list of
locations (see below).
3. After you hear the location of
where you are placing the
Alarm, Press & Hold the Test
“[Location, example: “Kitchen”]
location saved.”
If no location is chosen: “No
location saved.”
Your Alarm has now been programmed for the location of your choice.
Available locations:
Child’s Bedroom
Utility Room
Dining Room
Living Room
Family Room
Master Bedroom
Guest Bedroom
No Location
For Reprogramming
When it is necessary to reprogram the Alarm after the unit has been
activated and is in normal operation: Tap the Test button 5 times to
reset the Alarm to again access the programming menu.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Fire Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Basic Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Step By Step Guide to Programming This Alarm . . . . . . . . . . . . . . .2
What You Will See and Hear With This Alarm . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Where to Install This Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Where This Alarm Should NOT Be Installed . . . . . . . . . . . . . . . .3
How to Install This Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
If Your Smoke/CO Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
What To Do First–Identify The Type Of Alarm . . . . . . . . . . . . . . .4
If the CO Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
If the Smoke Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Using the Silence Features . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
What You Need To Know About CO . . . . . . . . . . . . . . . . . . . . . . . .5-6
What is CO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Symptoms of CO Poisoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Potential Sources of CO in the Home . . . . . . . . . . . . . . . . . . . . .6
How Can I Protect My Family From CO Poisoning? . . . . . . . . . . . .6
Regulatory Information For Smoke/CO Alarms . . . . . . . . . . . . . .6-7
Regulatory Information for CO Alarms . . . . . . . . . . . . . . . . . . . . .6
Regulatory Information for Smoke Alarms . . . . . . . . . . . . . . . .6-7
Recommended Locations for Smoke Alarms . . . . . . . . . . . . . .6-7
About Smoke Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Special Compliance Considerations . . . . . . . . . . . . . . . . . . . . . . .7-8
General Limitations Of Smoke/CO Alarms . . . . . . . . . . . . . . . . . . . .8
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10
© 2013 BRK Brands, Inc. All rights reserved.
Distributed by BRK Brands, Inc.
3901 Liberty Street Road, Aurora, IL 60504-8122
Consumer Affairs: (800) 323-9005 •
All BRK® and 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 fires.
Ionization technology is generally more sensitive than photoelectric technology at detecting small particles, which tend to
be produced in greater amounts by flaming fires, which consume combustible materials rapidly and spread quickly. Sources of
these fires may include paper burning in a wastebasket, or a grease
fire 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 fires, which may
smolder for hours before bursting into flame. Sources of these fires 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.
Under Normal Operations
Voice: Silent
Power LED: Flashes Green once a minute
Horn: Silent
When You Test the Alarm
Voice: “Testing.” “Warning, evacuate smoke in [Location, example:
“Kitchen”]. Evacuate.”
Horn: 3 beeps, pause, 3 beeps, voice
Power LED: Flashes Red
followed by
Voice: “Warning, evacuate carbon monoxide in [Location, example:
“Kitchen”]. Evacuate.”
Horn: 4 beeps, pause, 4 beeps, voice
LED: Flashes Red
If Battery Becomes Low
Voice: “Please see manual.” Repeated every 5 hours
Horn: chirps once a minute
Power LED: Flashes Green approximately once a minute
If Alarm is Not Operating Properly
Voice: “Detector error in [Location, example “Kitchen”], please see
manual.” Repeated every 5 hours
Horn: 3 chirps every minute
LED: Three Green flashes approximately once a minute
Alarm has reached its End of Life
Voice: “Detector error in [Location, example “Basement”], please
manual.” Repeated every 5 hours
Horn: 5 chirps every minute
LED: Five Green flashes approximately once a minute
Alarm Levels of CO are Detected
Voice: “Warning, evacuate carbon monoxide in [Location, example:
“Kitchen”]. Evacuate.” “____ ppm.”
Horn: 4 beeps, pause, 4 beeps, voice*
LED: Flashes Red
*NOTE: If unit goes into CO alarm, the regular 4 beeps-brief pause
cycle will repeat for four minutes. After four minutes, the pause will
increase to one minute.
Smoke is Detected
Voice: “Warning, evacuate smoke in [Location, example: “Kitchen”].
Horn: 3 beeps, pause, 3 beeps, voice
LED: Flashes Red
Smoke Alarm is Silenced
Voice: Silent.
Horn: Off
LED: Flashes Red
This silence feature can temporarily quiet the low battery warning
“chirp” for up to 8 hours. You can silence the low battery warning
“chirp” by pressing the Test/Silence button on the alarm cover.
Once the low battery warning “chirp” silence feature is activated, the
unit continues to flash the Green light once a minute for 8 hours. After
8 hours, the low battery “chirp” will resume. Replace the Alarm as
soon as possible; this unit will not operate without battery power!
To deactivate this feature: Press the Test/Silence button again. The
unit will go into Test Mode and the low battery warning will resume
(LED flashes and unit sounds “chirp” once a minute).
Fuel-burning appliances like:
portable heater, gas or wood burning
fireplace, gas kitchen range or cooktop, gas clothes dryer.
Damaged or insufficient venting:
corroded or disconnected water heater
vent pipe, leaking chimney pipe or flue,
or cracked heat exchanger, blocked or
clogged chimney opening.
Improper use of appliance/device:
operating a barbecue grill or vehicle
in an enclosed area (like a garage or
screened porch).
Transient CO Problems: “transient” or on-again-off-again CO problems
can be caused by outdoor conditions and other special circumstances.
The following conditions can result in transient CO situations:
1. Excessive spillage or reverse venting of fuel appliances caused by
outdoor conditions such as:
• Wind direction and/or velocity, including high, gusty winds.
Heavy air in the vent pipes (cold/humid air with extended
periods between cycles).
• Negative pressure differential resulting from the use of exhaust
• Several appliances running at the same time competing for
limited fresh 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.
2. Extended operation of unvented fuel burning devices (range, oven,
3. Temperature inversions, which can trap exhaust close to the
4. Car idling in an open or closed attached garage, or near a home.
These conditions are dangerous because they can trap exhaust in your
home. Since these conditions can come and go, they are also hard to
recreate during a CO investigation.
Type of Alarm
What You See and Hear
Carbon Monoxide (CO)
Voice: “Warning, evacuate carbon
monoxide in [Location,
example: “Kitchen”].
Evacuate.” “____ ppm.”
Horn: 4 beeps, pause, 4 beeps,
LED: Flashes Red
Voice: “Warning, evacuate smoke
in [Location, example:
“Kitchen”]. Evacuate.”
Horn: 3 beeps, pause, 3 beeps,
LED: Flashes Red
Do NOT locate this Smoke/CO Alarm:
• In garages, furnace rooms, crawl spaces and unfinished attics.
Avoid extremely dusty, dirty or greasy areas.
• Where combustion particles are produced. Combustion particles
form when something burns. Areas to avoid include poorly ventilated
kitchens, garages, and furnace rooms. Keep units at least 20 feet
(6 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, humidifier, 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 CO or 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-airconditioned crawl
spaces, unfinished attics, uninsulated or poorly insulated ceilings,
porches, and garages.
• In insect infested areas. Insects can clog the openings to the
sensing chamber.
• Less than 12 inches (305 mm) away from fluorescent lights.
Electrical “noise” can interfere with the sensor.
• In “dead air” spaces. See “Avoiding Dead Air Spaces”.
“Dead air” spaces may prevent smoke from reaching the Smoke/CO
Alarm. To avoid dead air spaces, follow installation recommendations
On ceilings, install Smoke/CO Alarms as close to the center of the
ceiling as possible. If this is not possible, install the Smoke/CO 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/CO Alarms should be placed between 4 inches (102 mm) and
12 inches (305 mm) from the wall/ceiling line, below typical “dead air”
On a peaked, gabled, or cathedral ceiling, install first Smoke/CO
Alarm within 3 feet (0.9 meters) of the peak of the ceiling, measured
horizontally. Additional Smoke/CO 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.
This combination Smoke/CO Alarm was designed to be mounted on
the ceiling or wall. It is not a tabletop device. You must install this
device on the ceiling or wall as outlined below. Read “Where To Install
This Alarm” before starting.
If you hear the CO alarm horn and the CO red light is flashing,
move everyone to a source of fresh air.
DO NOT deactivate the Alarm!
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!
1. Press the Test/Silence button.
2. Call your emergency services, fire 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 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 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
qualified appliance technician here:
NOTE: A qualified appliance technician is defined as “a person, firm,
corporation, or company 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 fireplaces or other
decorative combustion equipment.”
Test/Silence Button
Power/Smoke and CO Alarm LED
Mounting bracket
Mounting slots
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:
2. Press & Hold Test Button, if you
would like to clear the highest
level sensed.
If you would like to keep the
highest level in memory, do
not press anything.
• Dangers, Warnings, and Cautions alert you to important
operating instructions or to potentially hazardous situations.
Pay special attention to these items.
• This Smoke/CO Alarm is approved for use in single-family
residences. It is NOT designed for marine or RV use.
• This combination Smoke/Carbon Monoxide Alarm has two
separate alarms. The CO Alarm is not designed to detect fire
or any other gas. It will only indicate the presence of carbon
monoxide gas at the sensor. Carbon monoxide gas may be
present in other areas. 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 flames.
• This unit will not operate without battery power. The
Smoke/CO Alarm cannot work until you activate the battery
power pack.
• NEVER ignore any alarm. See “If Your Smoke/CO 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.
• Test this Smoke/CO 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.
• This product is intended for use in ordinary indoor locations
of family living units. It is not designed to measure CO levels
in compliance with Occupational Safety and Health
Administration (OSHA) commercial or industrial standards.
Individuals with medical conditions that may make them
more sensitive to carbon monoxide may consider using
warning devices which provide audible and visual signals for
carbon monoxide concentrations under 30 ppm. For additional information on carbon monoxide and your medical
condition contact your physician.
Minimum coverage for Smoke Alarms, as recommended by the
National Fire Protection Association (NFPA), is one Smoke Alarm on
every floor, in every sleeping area, and in every bedroom (See
“Regulatory Information For Smoke Alarms” for details on the NFPA
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.
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 meters) will not harm the Alarm, but may
increase the frequency of unwanted alarms.
In general, install combination Smoke and Carbon Monoxide Alarms:
• On every level of your home, including finished 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 first-to-second floor stairs.
• 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).
Recommended Placement
Suggested locations are based on
NFPA recommendations (NFPA 72
for Smoke Alarms and NFPA 720 for
Carbon Monoxide Alarms). Always
refer to national and local codes
before beginning any installation.
In new construction AC and AC/DC smoke alarms MUST
be interconnected to meet NFPA recommendations.
When installing on the wall, the top edge of Smoke Alarms should
be placed between 4 inches (102 mm) and 12 inches (305 mm)
from the wall/ceiling line. When installing on the ceiling, place the
alarm as close to the center as possible.
• In either case, install at least 4 inches (102 mm) from where the
wall and ceiling meet. See “Avoiding Dead Air Spaces” for more
NOTE: For any location, make sure no door or other obstruction could
keep carbon monoxide or smoke from reaching the Alarm. Continued...
“Highest carbon monoxide level
Alarm will say nothing.
• NEVER use an open flame of any kind to test this unit. You
might accidentally damage or set fire to the unit or to your
home. NEVER use vehicle exhaust! Exhaust may cause
permanent damage and voids your warranty.
• DO NOT stand close to the Alarm when the horn is sounding.
Exposure at close range may be harmful to your hearing.
When testing, step away when horn starts sounding.
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 holding the
Test/Silence button on the Alarm cover until Alarm Voice says “Testing”
(typically 3-5 seconds).
During testing, you will see and hear the following sequence:
• The Alarm Voice will say “Testing.” The Horn will sound 3 beeps,
pause, 3 beeps. The Alarm Voice will say “Warning, evacuate
smoke in [Location, example: “Kitchen”]. Evacuate.” The Power
LED flashes Red.
• Next the Horn will sound 4 beeps, pause, 4 beeps. The Alarm
Voice will say “Warning, evacuate carbon monoxide in [Location,
example: “Kitchen”]. Evacuate.” The LED flashes Red.
If the unit does not alarm, make sure it has been activated correctly,
and test again. If the unit still does not alarm, replace it immediately.
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. A can of clean compressed air (sold at
computer or office supply stores) may also be used. Follow
manufacturer instructions for use. 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.
• Relocate the unit if it sounds frequent unwanted alarms. See
“Where This Alarm Should Not Be Installed” for details.
Actual battery service life depends on the Smoke/CO Alarm and the
environment in which it is installed. Regardless of the manufacturer’s
suggested battery life, you MUST replace the Alarm immediately once
the unit starts “chirping” (the “low battery warning”).
After 10 years of operation or Low Battery
warning, deactivate the Alarm: Insert a tool
below edge where shown and break tab.
Then slide activation switch to discharge mode.
NOTE: At end of life or low battery indication (chirp): unit must be
put in to deactivation mode to discharge remaining stored energy
in battery. Unit will no longer function once put into this mode.
Unit will resist re-mounting.
Tools you will need: pencil, drill with 3/16” or 5mm drill bit,
flathead screwdriver, hammer.
• Do not install this unit over an electrical junction box. Air
currents around junction boxes can prevent smoke from
reaching the sensing chamber and prevent the unit from
alarming. Only AC powered units are intended for installation
over junction boxes.
NOTE: Be sure to mount the product in the orientation specified in
the next steps as this provides the most stability for mounting the
product to the wall or ceiling.
Follow safety rules and prevent hazardous situations: 1) Use smoking
materials properly. Never smoke in bed. 2) Keep matches or lighters
away from children; 3) Store flammable materials in proper containers;
4) Keep electrical appliances in good condition and don’t overload
electrical circuits; 5) Keep stoves, barbecue grills, fireplaces and
chimneys grease- and debris-free; 6) Never leave anything cooking
on the stove unattended; 7) Keep portable heaters and open flames,
like candles, away from flammable materials; 8) Don’t let rubbish
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 fire. Keep at least one working fire extinguisher on every
floor, and an additional one in the kitchen. Have fire escape ladders or
other reliable means of escape from an upper floor in case stairs are
Alarm Will Say:
“Highest carbon monoxide level
was ___ ppm. Please see manual.”
“To clear highest carbon monoxide
level, press and hold test button
1. Press & Hold Test Button
This silence feature can temporarily quiet the End of Life warning
“chirp” for up to 2 days. You can silence the End of Life warning “chirp”
by pressing the Test/Silence button. The horn will chirp, acknowledging
that the End of Life silence feature has been activated.
After approximately 2 days, the End of Life “chirp” will resume.
CO Alarm is Silenced
Voice: Silent.
Horn: Off
LED: Flashes Red
Installing Smoke/CO Alarms in Mobile Homes
For minimum security install one Smoke/CO Alarm as close to each
sleeping area as possible. For more security, put one unit in each room.
Many older mobile homes (especially those built before 1978) have little
or no insulation. If your mobile home is not well insulated, or if you are
unsure of the amount of insulation, it is important to install units on
inside walls only.
1. Turn alarm upside down so the circular
shape is located in the upper left corner of
the alarm.
2. Slide mounting bracket to the left and lift to
separate it from the base.
3. Hold the mounting bracket against the ceiling
(or wall) so the arrow located on the mounting
plate is pointing to the left. (The circular shape
will now be in upper right-hand corner). Trace
around the insides of the mounting slots.
4. Put the unit where it won’t get covered with
dust when you drill the mounting holes.
5. Using a 3/16” (5 mm) drill bit, drill a hole through the center of the
oval outlines you traced in step #3.
6. Insert the plastic screw anchors (in the plastic bag with screws) into
the holes. Tap the screw anchors gently with a hammer, if necessary,
until they are flush with the ceiling or wall.
7. Attach the mounting bracket to the ceiling or wall.
8. Activate the battery. Move the activation switch to
center position against tab stop. Unit will not mount OFF - ON - DISCHARGE
on mounting bracket unless activated. Once unit is
activated, it cannot be turned off.
NOTE: After you activate the battery, the power indicator light may
flash. (If the unit alarms, the light will blink rapidly, and the horn will
repeatedly sound 3 beeps, pause, 3 beeps.)
9. Attach the Smoke/CO Alarm to the
mounting bracket. Line up the arrow
on the back of the unit to the arrow on
the mounting bracket. When the units
are lined up, slide the alarm to the right
until it snaps into place.
NOTE: Once the Smoke/CO Alarm is
snapped onto the mounting bracket,
you can rotate the Smoke/CO Alarm to
adjust the alignment.
10. Test the Alarm. See “Weekly Testing.”
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.
• 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, and do
a head count to make sure everybody got out safely.
• Call the Fire Department as soon as possible from outside.
Give your address, then your name.
• Never go back inside a burning building for any reason.
• Contact your Fire Department for ideas on making your home
CO is an invisible, odorless, tasteless gas produced when fossil fuels
do not burn completely, or are exposed to heat (usually fire). Electrical
appliances typically do not produce CO.
These fuels include: Wood, coal, charcoal, oil, natural gas, gasoline,
kerosene, and propane.
Common appliances are often sources of CO. If they are not properly
maintained, are improperly ventilated, or malfunction, CO levels can
rise quickly. CO is a real danger now that homes are more energy
efficient. “Air-tight” homes with added insulation, sealed windows,
and other weatherproofing can “trap” CO inside.
These symptoms are related to CO POISONING and should be
discussed with ALL household members.
Mild Exposure: Slight headache, nausea, vomiting, fatigue (“flu-like”
Medium Exposure: Throbbing headache, drowsiness, confusion, fast
heart rate.
Extreme Exposure: Convulsions, unconsciousness, heart and lung
failure. Exposure to Carbon Monoxide can cause brain damage, death.
This CO Alarm measures exposure to CO over time. It alarms if CO
levels are extremely high in a short period of time, or if CO levels reach
a certain minimum over a long period of time. The CO Alarm generally
sounds an alarm before the onset of symptoms in average, healthy
adults. Why is this important? Because you need to be warned of a
potential CO problem while you can still react in time. In many reported
cases of CO exposure, victims may be aware that they are not feeling
well, but become disoriented and can no longer react well enough to
exit the building or get help. Also, young children and pets may be the
first affected. The average healthy adult might not feel any symptoms
when the CO Alarm sounds. However, people with cardiac or respiratory
problems, infants, unborn babies, pregnant mothers, or elderly people
can be more quickly and severely affected by CO. If you experience
even mild symptoms of CO poisoning, consult your doctor immediately!
Never deactivate the unit to quiet an unwanted alarm. Deactivating
the alarm disables the unit and removes your protection.
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
The Silence Feature can temporarily quiet an unwanted alarm for several
minutes. You can silence this Smoke/CO Alarm by pressing the
Test/Silence button on the alarm cover for at least 3-5 seconds.
After the Test/Silence button is released, the Red LED blinks during the
silence mode.
Carbon monoxide is an odorless, invisible gas, which often makes it
difficult to locate the source of CO after an alarm. These are a few of
the factors that can make it difficult to locate sources of CO:
• House well ventilated before the investigator arrives.
• Problem caused by “backdrafting.”
• Transient CO problem caused by special circumstances.
Because CO may dissipate by the time an investigator arrives, it may
be difficult to locate the source of CO. BRK Brands, Inc. shall not be
obligated to pay for any carbon monoxide investigation or service
Alarms have various limitations. See "General Limitations of
Smoke/CO Alarms" for details.
When the Smoke Alarm is
When the CO Alarm is Silenced
The Smoke Alarm will remain
silent for up to 15 minutes, then
return to normal operation.
If the smoke has not cleared–or
continues to increase–the device
will go back into alarm.
The CO Alarm will remain silent
for up to 4 minutes.
After 4 minutes, if CO levels
remain potentially dangerous the
horn will start sounding again.
A CO Alarm is an excellent means of protection. It monitors the air
and sounds a loud alarm before Carbon Monoxide levels become
threatening for average, healthy adults.
A CO Alarm is not a substitute for proper maintenance of home
To help prevent CO problems and reduce the risk of CO poisoning:
• Clean chimneys and flues yearly. Keep them free of debris,
leaves, and nests for proper air flow. Also, have a professional
check for rust and corrosion, cracks, or separations. These
conditions can prevent proper air movement and cause
backdrafting. Never “cap” or cover a chimney in any way
that would block air flow.
• Test and maintain all fuel-burning equipment annually. Many
local gas or oil companies and HVAC companies offer appliance
inspections for a nominal fee.
• Make regular visual inspections of all fuel-burning appliances.
Check appliances for excessive rust and scaling. Also check the
flame on the burner and pilot lights. The flame should be blue.
A yellow flame means fuel is not being burned completely and
CO may be present. Keep the blower door on the furnace
closed. Use vents or fans when they are available on all fuelburning appliances. Make sure appliances are vented to the
outside. Do not grill or barbecue indoors, or in garages or on
screen porches.
• Check for exhaust backflow from CO sources. Check the draft
hood on an operating furnace for a backdraft. Look for cracks
on furnace heat exchangers.
• Check the house or garage on the other side of shared wall.
• Keep windows and doors open slightly. If you suspect that CO is
escaping into your home, open a window or a door. Opening
windows and doors can significantly decrease CO levels.
In addition, familiarize yourself with all enclosed materials. Read
this manual in its entirety, and make sure you understand what to
do if your CO Alarm sounds.
Underwriters Laboratories Inc. Standard UL2034 requires residential
CO Alarms to sound when exposed to levels of CO and exposure times
as described below. They are measured in parts per million (ppm) of
CO over time (in minutes).
UL2034 Required Alarm Points*:
• If the alarm is exposed to 400 ppm of CO, IT MUST ALARM
• If the alarm is exposed to 150 ppm of CO, IT MUST ALARM
• If the alarm is exposed to 70 ppm if CO, IT MUST ALARM
* Approximately 10% COHb exposure at levels of 10% to 95% Relative
Humidity (RH).
The unit is designed not to alarm when exposed to a constant level of
30 ppm for 30 days.
CO Alarms are designed to alarm before there is an immediate life
threat. Since you cannot see or smell CO, never assume it’s not present.
• An exposure to 100 ppm of CO for 20 minutes may not affect
average, healthy adults, but after 4 hours the same level may cause
• An exposure to 400 ppm of CO may cause headaches in average,
healthy adults after 35 minutes, but can cause death after 2 hours.
Standards: Underwriters Laboratories Inc. Single and Multiple Station
carbon monoxide alarms UL2034.
According to Underwriters Laboratories Inc. UL2034, Section 1-1.2:
“Carbon monoxide alarms covered by these requirements are intended
to respond to the presence of carbon monoxide from sources such as,
but not limited to, exhaust from internal-combustion engines, abnormal
operation of fuel-fired appliances, and fireplaces. CO Alarms are intended
to alarm at carbon monoxide levels below those that could cause a loss
of ability to react to the dangers of Carbon Monoxide exposure.” This
CO Alarm monitors the air at the Alarm, and is designed to alarm before
CO levels become life threatening. This allows you precious time to
leave the house and correct the problem. This is only possible if Alarms
are located, installed, and maintained as described in this manual.
Gas Detection at Typical Temperature and Humidity Ranges: The
CO Alarm is not formulated to detect CO levels below 30 ppm typically.
UL tested for false alarm resistance to Methane (500 ppm), Butane (300
ppm), Heptane (500 ppm), Ethyl Acetate (200 ppm), Isopropyl Alcohol
(200 ppm) and Carbon Dioxide (5000 ppm). Values measure gas and
vapor concentrations in parts per million.
Audible Alarm: 85 dB minimum at 10 feet (3 meters).
Installing Smoke Alarms in Single-Family Residences
The National Fire Protection Association (NFPA), recommends one
Smoke Alarm on every floor, in every sleeping area, and in every
bedroom. In new construction, the Smoke Alarms must be AC powered
and interconnected. See “Agency Placement Recommendations” for
details. For additional coverage, it is recommended that you install a
Smoke Alarm in all rooms, halls, storage areas, finished attics, and
basements, where temperatures normally remain between 40˚ F (4.4˚ C)
and 100˚ F (37.8˚ C). Make sure no door or other obstruction could
keep smoke from reaching the Smoke Alarms.
More specifically, install Smoke Alarms:
• On every level of your home, including finished 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
long (12 meters), install a unit at each end.
• At the top of the first-to-second floor stairway, and at the bottom of
the basement stairway.
FCC Compliance
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 the 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
of the receiver.
• Consult the dealer or an experienced radio or TV technician for
Specific requirements for Smoke Alarm installation vary from state to
state and from region to region. Check with your local Fire Department
for current requirements in your area. It is recommended AC or
AC/DC units be interconnected for added protection.
Warning: Changes or modifications to the product, not expressly
approved by First Alert / BRK Brands, Inc., could void the user’s
authority to operate the 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.
If the Alarm...
You should...
Horn "chirps" about once per minute;
Voice: "Please see manual" every 5 hours
Low battery warning.
Immediately replace the Alarm.
Horn sounds three "chirps" every minute;
Voice: "Detector error in [Location, example
"Kitchen"], please see manual" repeated every
5 hours; LED has 3 Green flashes with "chirps".
working properly, and needs to be replaced.
Units under warranty should be returned to
manufacturer for replacement. See “Limited
Warranty” for details.
The light flashes GREEN and the horn sounds 5
“chirps” every minute;
Voice: "Detector error in [Location, example
"Basement"], please see manual." Repeated
every 5 hours.
END OF LIFE SIGNAL. Alarm needs to be
Immediately replace the Alarm.
CO Alarm goes back into alarm 4 minutes after
you Silence it.
CO levels indicate a potentially dangerous
POISONING, EVACUATE your home and call
911 or the Fire Department. Refer to "If The CO
Alarm Sounds" for details.
CO Alarm sounds frequently even though no high
levels of CO are revealed in an investigation.
The CO Alarm may be improperly located. Refer
to “Where to Install This Alarm” for details.
Relocate your Alarm. If frequent alarms
continue, have home rechecked for potential
CO problems. You may be experiencing an
intermittent CO problem.
Unwanted alarm may be caused by
non-emergency source like cooking smoke.
Silence Alarm using manual button; clean the
Alarm’s cover with a soft, clean cloth.
If frequent unwanted alarms continue, relocate
your Alarm. Alarm may be too close to a kitchen,
cooking appliance, or steamy bathroom.
Carbon Monoxide Alarm ONLY:
Smoke Alarm ONLY:
Smoke Alarm sounds when no smoke is visible.
Standards: Underwriters Laboratories Inc. Single and Multiple Station
Smoke Alarms 217.
NFPA 72 Chapter 29
“For your information, the National Fire Alarm and Signaling Code,
NFPA 72, reads as follows:”
29.5.1* Required Detection.* 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
(Reprinted with permission from NFPA 72®, National Fire Alarm and
Signaling Code Copyright © 2010 National Fire Protection Association,
Quincy, MA 02269. This reprinted material is not the complete and
official position of the National Fire Protection Association, on the
referenced subject which is represented only by the standard in its
entirety), (National Fire Alarm and Signaling Code® and NFPA 72® are
registered trademarks of the National Fire Protection Association, Inc.,
Quincy, MA 02269).
California State Fire Marshal (CSFM)
Early warning 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 bedrooms), and Heat or Smoke Alarms in the living rooms,
dining rooms, bedrooms, kitchens, hallways, finished attics, furnace
rooms, closets, utility and storage rooms, basements, and attached
Battery (DC) operated Smoke Alarms: Provide protection even when
electricity fails, provided the batteries are fresh and correctly installed.
Units are easy to install, and do not require professional installation.
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 qualified electrician.
Smoke/CO Alarms for Solar or Wind Energy users and battery
backup power systems: AC powered Smoke/CO Alarms should only
be operated with true or pure sine wave inverters. Operating this Alarm
with most battery-powered UPS (uninterruptible 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 these Smoke Alarms are designed to provide early warning of fires
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 to 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 specific units in new construction or in different areas
of the home.
This Smoke/CO Alarm is intended for residential use. It is not intended
for use in industrial applications where Occupational Safety and Health
Administration (OSHA) requirements for Carbon Monoxide Alarms must
be met. The Smoke Alarm portion of this device is not intended to alert
hearing impaired residents. Special purpose Smoke Alarms should be
installed for hearing impaired residents (CO Alarms are not yet available
for the hearing impaired).
Smoke/CO Alarms may not waken all individuals. Practice the
escape plan at least twice a year, making sure that everyone is involved
– from kids to grandparents. Allow children to master fire escape
planning and practice before holding a fire drill at night when they are
sleeping. If children or others do not readily waken to the sound of the
Smoke/CO Alarm, or if there are infants or family members with mobility
limitations, make sure that someone is assigned to assist them in fire
drill and in the event of an emergency. It is recommended that you hold
a fire drill while family members are sleeping in order to determine their
response to the sound of the Smoke/CO Alarm while sleeping and
to determine whether they may need assistance in the event of an
Smoke/CO Alarms cannot work without power. Battery operated
units cannot work if the batteries are missing, disconnected or dead, if
the wrong type of batteries are used, or if the batteries are not installed
correctly. AC units cannot work if the AC power is cut off for any reason
(open fuse or circuit breaker, failure along a power line or at a power
station, electrical fire that burns the electrical wires, etc.). If you are
concerned about the limitations of battery or AC power, install both
types of units.
This Smoke/CO Alarm will not sense smoke or CO that does not
reach the sensors. It will only sense smoke or CO at the sensor.
Smoke or CO may be present in other areas. Doors or other obstructions
may affect the rate at which CO or smoke reaches the sensors.
If bedroom doors are usually closed at night, we recommend you install
an alarm device (Combination CO and Smoke Alarm, or separate CO
Alarms and Smoke Alarms) in each bedroom and in the hallway
between them.
This Smoke/CO Alarm may not sense smoke or CO on another
level of the home. Example: This alarm device, installed on the second
floor, may not sense smoke or CO in the basement. For this reason,
one alarm device may not give adequate early warning. Recommended
minimum protection is one alarm device in every sleeping area, every
bedroom, and on every level of your home. Some experts recommend
battery powered Smoke and CO Alarms be used in conjunction with
interconnected AC powered Smoke Alarms. For details, see “About
Smoke Alarms” for details.
Smoke/CO Alarms may not be heard. The alarm horn loudness
meets or exceeds current UL standards of 85 dB at 10 feet (3 meters).
However, if the Smoke/CO Alarm is installed outside the bedroom, it
may not wake up a sound sleeper or one who has recently used drugs
or has been drinking alcoholic beverages. This is especially true if the
door is closed or only partly open. Even persons who are awake may
not hear the alarm horn if the sound is blocked by distance or closed
doors. Noise from traffic, stereo, radio, television, air conditioner, or
other appliances may also prevent alert persons from hearing the alarm
horn. This Smoke/CO Alarm is not intended for people who are hearing
If you have questions that cannot be answered by reading this manual, call Consumer Affairs at 1-800-323-9005, M-F 7:30 a.m. to 5:00 p.m. (CST)
BRK Brands, Inc., ("BRK") the maker of First Alert® brand products warrants that for a period of ten years from the date of purchase, this product will
be free from defects in material and workmanship. BRK, at its option, will repair or replace this product or any component of the product found to be
defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If the product is no longer available,
replacement may be made with a similar product of equal or greater value. This is your exclusive warranty. This warranty is valid for the original retail
purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase is required to obtain warranty
performance. BRK dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way change the terms and
conditions of this warranty.
This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper
voltage or current, use contrary to the operating instructions, disassembly, repair or alteration by anyone other than BRK or an authorized service center.
Further, the warranty does not cover Acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included with this unit.
BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent
prohibited by applicable law, any implied warranty of merchantability or fitness for a particular purpose is limited in duration to the duration of the above
warranty. Some states, provinces or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or limitations on how
long an implied warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may
also have other rights that vary from state to state or province to province.
How to Obtain Warranty Service
Service: If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at
1-800-323-9005, 7:30 AM - 5:00 PM Central Standard Time, Monday through Friday. To assist us in serving you, please have the model number and
date of purchase available when calling.
For Warranty Service return to: 25 Spur Drive, El Paso, TX 79906
Disposal: Waste electrical products should not be disposed of with regular household waste. Please recycle where facilities exist.
Check local requirements for disposal of Li-Ion electronic devices.
The Alarm should be deactivated before disposal. See page 5, “To Permanently Deactivate the Smoke/CO Alarm”.
You can also return your Alarm to us for disposal. For return address see above.
Please include a note confirming the product is being returned for disposal.
For your records, please record:
Date Purchased: _________________
Replace alarm 10 years after installation. Please write the date in
the space provided:
Where Purchased: __________________________________
The alarm will also provide an audible End-of-Life Signal
approximately 10 years after installation to remind you to
replace the unit.
Date Installed: ____________/____________Month/Year
The End-of-Life Signal can be silenced for up to 2 days.
Do not unplug or deactivate the alarm until you get replacement.
The Alarm may not have time to alarm before the fire itself causes
damage, injury, or death, since smoke from some fires may not
reach the unit immediately. Examples of this include persons
smoking in bed, children playing with matches, or fires caused by
violent explosions resulting from escaping gas.
This Smoke/CO Alarm is not a substitute for life insurance.
Though this Smoke/CO Alarm warns against increasing CO levels or
the presence of smoke, BRK Brands, Inc. does not warrant or imply in
any way that they will protect lives. Homeowners and renters must still
insure their lives.
This Smoke/CO Alarm has a limited life. Although this Smoke/CO
Alarm and all of its parts have passed many stringent tests and are
designed to be as reliable as possible, any of these parts could fail at
any time. Therefore, you must test this device weekly. The unit should
be replaced immediately if it is not operating properly.
This Smoke/CO Alarm is not foolproof. Like all other electronic
devices, this Smoke/CO Alarm has limitations. It can only detect smoke
or CO that reaches the sensors. It may not give early warning of the
source of smoke or CO is in a remote part of the home, away from the
alarm device.
This Smoke Alarm is suitable for use in apartments, condominiums,
townhouses, hospitals, day care facilities, health care facilities, boarding
houses, group homes and dormitories provided a primary fire detection
system already exists to meet fire detection requirements in common
areas like lobbies, hallways, or porches. Using this Smoke Alarm in
common areas may not provide sufficient warning to all residents or
meet local fire protection ordinances/regulations.
This Smoke Alarm alone is not a suitable substitute for complete fire
detection systems in places housing many people—like apartment
buildings, condominiums, hotels, motels, dormitories, hospitals, health
care facilities, nursing homes, day care facilities, or group homes of any
kind. It is not a suitable substitute for complete fire detection systems
in warehouses, industrial facilities, commercial buildings, and specialpurpose non-residential buildings which require special fire detection
and alarm systems. Depending on the building codes in your area, this
Smoke Alarm may be used to provide additional protection in these
In new construction, most building codes require the use of AC or
AC/DC powered Smoke Alarms only. In existing construction, AC,
AC/DC, or DC powered Smoke Alarms can be used as specified by
local building codes. Refer to NFPA 72 (National Fire Alarm and
Signaling Code) and NFPA 101 (Life Safety Code), local building codes,
or consult your Fire Department for detailed fire protection requirements
in buildings not defined as “households”.
HUD MAP Program
Certain HUD battery powered Smoke Alarm applications, especially
those that fall under HUD 223(f) MAP (Multi-family Accelerated
Processing), may require a 10 Year sealed tamper resistant battery. This
alarm does not meet that requirement. Substitute First Alert SA340B.
First Alert® is a registered trademark of the First Alert Trust.
Printed in Mexico M08-0408-004 K1 05/13
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