First Alert Smoke Alarm SC9120B User Manual

INTRODUCTION  
Thank you for choosing BRK Brands, Inc. for your Smoke and Carbon  
Monoxide Alarm needs. You have purchased a state-of-the-art Smoke &  
CO Alarm designed to provide you with early warning of a fire or Carbon  
Monoxide. Key features include:  
USER’S MANUAL  
Smoke & Carbon  
Monoxide Alarm  
Smoke & Carbon Monoxide Combination Alarm. One alarm protects  
against two deadly household threats.  
AC Powered Smoke &  
Carbon Monoxide Alarm  
with Battery Back-up,  
Silence Feature and  
Latching Alarm  
Intelligent Sensing Technology designed to help reduce unwanted or  
nuisance alarms.  
Smart Interconnect can be interconnected to BRK Smoke Alarms.  
One interconnect wire carries both smoke and CO alarm signals.  
Single Button Test/Silence eliminates confusion. Depending on what  
mode the alarm is in, pushing the button provides different functions  
such as testing the alarm, silencing the alarm, re-testing the alarm  
when in silence and clearing the Latching feature.  
Latching Alarm Indicator easily identifies initiating alarm even after the  
alarm condition has subsided.  
Model SC9120B  
Input: 120V AC ~  
60 Hz, 0.09A  
Perfect Mount System includes a gasketless base for easy installation  
and a new mounting bracket that keeps the alarm secure over a wide  
rotation range to allow for perfect alignment.  
Dust Cover is included to keep the alarm clean during construction.  
Easy Installation/Maintenance features include a large opening in  
the mounting bracket for easy access to wiring. A battery pull tab that  
keeps the battery fresh until the home is occupied. A Side Load Battery  
Drawer allows for easy battery replacement without removing the alarm  
from the ceiling or wall.  
IMPORTANT! PLEASE READ CAREFULLY AND SAVE  
This user’s manual contains important information about your Alarm’s  
operation. If you are installing the Alarm for use by others, you must leave  
this manual — or a copy of it — with the end user.  
Improved UV Resistance keeps the alarm from discoloring over time.  
LISTED TO  
®
®
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.  
Model  
SC9120B  
UL 217  
Printed in Mexico  
M08-0094-004 K1 10/07  
ULA2ND034  
Ionization technology is generally more sensitive than photo-  
electric 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.  
TABLE OF CONTENTS  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1  
Fire Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4  
Where To Install This Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2  
Where This Alarm Should Not Be Installed . . . . . . . . . . . . . . . . . . . .2  
Before You Begin Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
How To Install This Smoke/CO Alarm . . . . . . . . . . . . . . . . . . . . . .3-4  
Using the Optional Locking Features . . . . . . . . . . . . . . . . . . . . . . . . .5  
How Your Smoke/CO Alarm Works . . . . . . . . . . . . . . . . . . . . . . . . . .6  
Understanding the Light and Horn Patterns . . . . . . . . . . . . . . . . . . .6  
If Your Smoke/CO Alarm Sounds . . . . . . . . . . . . . . . . . . . . . . . . . .6-7  
What To Do First–Identify the Type of Alarm . . . . . . . . . . . . . . . . . . .6  
What To Do if CO is Detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
What To Do if Smoke is Detected . . . . . . . . . . . . . . . . . . . . . . . . .6-7  
“Smart Interconnect” Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Using the Silence Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
The “Latching Alarm” Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Weekly Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
What You Need To Know About CO . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
What is CO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Symptoms of CO Poisoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Finding the Source of CO After an Alarm . . . . . . . . . . . . . . . . . . . . .8  
Potential Sources of CO in the Home . . . . . . . . . . . . . . . . . . . . . . . .8  
How Can I Protect My Family From CO Poisoning? . . . . . . . . . . . . .8  
Regulatory Information For Smoke/CO Alarms . . . . . . . . . . . . . . .8-9  
Regulatory Information for CO Alarms . . . . . . . . . . . . . . . . . . . . . . .8  
Regulatory Information for Smoke Alarms . . . . . . . . . . . . . . . . . . . .9  
About Smoke Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
Special Compliance Considerations . . . . . . . . . . . . . . . . . . . . . . . .9  
General Limitations Of Smoke/CO Alarms . . . . . . . . . . . . . . . . . . .10  
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10  
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11  
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.  
FIRE SAFETY TIPS  
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 elec-  
trical 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 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 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  
blocked.  
BASIC SAFETY INFORMATION  
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.  
© 2007 BRK Brands, Inc., a Jarden Corporation company (NYSE: JAH)  
3901 Liberty Street Road, Aurora, IL 60504-8122  
All rights reserved.  
Consumer Affairs: (800) 323-9005  
Continued...  
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INSTALLATION, Continued  
BEFORE YOU BEGIN INSTALLATION  
STAND ALONE ALARM ONLY:  
This unit is designed to be mounted on any standard wiring junction  
box up to a 4-inch (10 cm) size, on either the ceiling or wall. Read  
“Where to Install This Alarm” and “Where This Alarm Should Not Be  
Installed ” before you begin installation. If a junction box is not already  
in place, install one using standard #12 or #14 gauge copper wire.  
Connect the white wire on the power connector to the neutral  
wire in the junction box.  
Connect the black wire on the power connector to the hot wire  
in the junction box.  
Tuck the orange wire inside the junction box. It is used for  
interconnect only.  
• Make sure the alarm is not receiving excessively noisy power.  
Examples of noisy power could be major appliances on the  
same circuit, power from a generator or solar power, light dim-  
mer on the same circuit or mounted near fluorescent lighting.  
Excessively noisy power may cause damage to your Alarm.  
INTERCONNECTED ALARMS ONLY:  
Strip off about 1/2” of the plastic coating on the orange  
interconnect wire on the power connector.  
Connect the white wire on the power connector to the neutral  
wire (usually white) in the junction box.  
Connect the black wire on the power connector to the hot wire  
(usually black) in the junction box.  
Connect the orange wire on the power connector to the inter-  
connect wire in the junction box. Repeat for each unit you are  
interconnecting. Never connect the hot or neutral wires in the  
junction box to the orange interconnect wire. Never cross hot  
and neutral wires between interconnected Alarms.  
Find the pair of self-adhesive labels included with this Smoke/CO Alarm.  
• On each label write in the phone number of your emergency  
responder (like 911) and a qualified appliance technician.  
• Place one label near the Smoke/CO Alarm, and the other label in  
the “fresh air” location you plan to go if the alarm sounds.  
NOTE: A qualified appliance technician is defined as “a person, firm,  
corporation, or company that either in person or through a representa-  
tive, 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.”  
3. Plug the power connector into the back of the Smoke/CO Alarm.  
4. Position the base of the Smoke/CO Alarm over the mounting bracket  
and turn. The Alarm will remain secure over a wide rotation range to  
allow for perfect alignment. When wall mounting, this will allow fine-  
tuning on the positioning to compensate for out of aligned wall studs  
and to keep the wording level. The Alarm can be positioned over the  
bracket every 120°. Rotate the Alarm until aligned properly.  
1
PARTS OF THIS SMOKE/CO ALARM  
3
1
2
3
Mounting Bracket  
5. Check all connections.  
Mounting Slot and Screw*  
Locking Pins (break out of  
bracket)  
2
STAND ALONE ALARM ONLY:  
If you are only installing one unit, restore power to the junction box.  
2
4
5
6
7
Hot (Black) AC Wire  
INTERCONNECTED ALARMS ONLY:  
If you are interconnecting multiple Smoke/CO Alarms, repeat  
Step 1-5 for each Smoke/CO Alarm in the series. When you are  
finished, restore power to the junction box.  
Neutral (White) AC Wire  
Interconnect Wire (Orange)  
3
8
6
4
7
5
Lever to Open Battery  
Compartment  
8
9
Swing-Out Battery  
Compartment  
ELECTRICAL SHOCK HAZARD. Do not restore power until all  
Alarms are completely installed. Restoring power before installation  
is complete may result in serious electrical shock, injury or death.  
9
Quick-Connect Power  
*Not Included  
6. Make sure the Smoke/CO Alarm is receiving AC power. Under normal  
operation, the green indicator light will shine continuously. If the green  
power indicator light does not light, TURN OFF POWER TO THE  
JUNCTION BOX and recheck all connections. If all connections are  
correct and the green power indicator still does not light when you  
restore the power, the unit should be replaced immediately.  
HOW TO INSTALL THIS SMOKE/CO ALARM  
Tools you will need: Standard Flathead screwdriver, wire strippers.  
7. ACTIVATING THE BATTERY BACK-UP  
ELECTRICAL SHOCK HAZARD. Turn off power to the area where you  
will install this unit at the circuit breaker or fuse box before beginning  
installation. Failure to turn off the power before installation may  
result in serious electrical shock, injury or death.  
Activate the battery back-up by removing the “Pull to Activate  
Battery Back-Up” tab. You do not need to open the battery  
compartment and reposition the battery during installation. DO NOT  
remove the battery activation tab until AC power is turned on to  
conserve battery power.  
To install this unit:  
1. Remove the mounting bracket from the base. Position the screw  
slots on the mounting bracket over the screws in the junction box.  
Tighten the screws.  
8. Single Station Alarms: Test each Alarm. Press and hold the  
Test/Silence button until you hear the acknowledge “chirp” or the  
unit alarms.  
Interconnected Alarms: Press and hold the Test/Silence button  
until the unit alarms. All interconnected Alarms should sound. The  
other Alarms sounding only tests the interconnect signal between  
Alarms. It does not test each Alarm’s operation. You must test each  
Alarm individually to check if the Alarm is functioning properly.  
Improper wiring of the power connector or the wiring leading to  
the power connector will cause damage to the Alarm and may lead  
to a non-functioning Alarm.  
2. Using wire nuts, connect the power connector to the AC power.  
If any unit in the series does not alarm during testing, TURN OFF POWER,  
REMOVE BATTERIES, and recheck connections. If it does not alarm when  
you restore power, replace it immediately.  
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INSTALLATION, Continued  
SPECIAL REQUIREMENTS FOR INTERCONNECTED ALARMS  
Failure to meet any of the above requirements could damage  
the units and cause them to malfunction, removing your  
protection.  
AC and AC/DC Smoke/CO Alarms can be interconnected.  
Under AC power, all units will alarm when one senses smoke  
or CO. When power is interrupted, only the AC/DC units in  
the series will continue to send and receive signals.  
AC powered Smoke/CO Alarms will not operate. See “Smart  
Interconnect” Feature.  
Interconnected units can provide earlier warning of a Smoke/CO problem  
than stand-alone units, especially if the problem starts in a remote area of  
the dwelling. If any unit in the series senses Smoke/CO, all units will alarm.  
To determine which Smoke/CO Alarm initiated an alarm, refer to the table.  
During an Alarm:  
On Initiating Alarm(s) – Red LED(s) flashes (flash) rapidly  
On All Other Alarms – Red LED is Off  
After an Alarm (Latching):  
On Initiating Alarm(s) – Green LED(s) On, Red LED(s) flash once every 5 seconds  
On All Other Alarms – Green LED(s) On, Red LED(s) is Off  
Compatible Interconnected Units  
Interconnect units within a single family residence only. Otherwise all  
households will experience unwanted alarms when you test any unit in the  
series. Interconnected units will only work if they are wired to compatible  
units and all requirements are met. This unit is designed to be compatible  
with: BRK Electronics® Smoke Alarm Models 9120, 9120B, 7010, 7010B,  
7020B, 4120, 4120B, 4120SB, 4919, 2002RAC, 100S, 5919, 5919TH;  
BRK Electronics® Heat Alarm Models HD6135F, HD6135FB; BRK  
Electronics® CO Alarm Models CO5120BN, CO5120PDBN; Smoke/CO  
Alarm Model SC6120B, SC9120B; and First Alert® Smoke Alarm Models  
SA4120, SA4120B, SA4121B, SA4919B, SA100B, SC7010B, SC7010BV;  
Accessory devices models RM3, RM4, SL177.  
Interconnected units must meet ALL of the following requirements:  
• A maximum of 18 compatible BRK Electronics® Smoke, Heat or CO  
Alarms may be interconnected. No more than 12 of the 18 can be  
Smoke Alarms per NFPA 72.  
• The same fuse or circuit breaker must power all interconnected units.  
• The total length of wire interconnecting the units should be less  
than 1000 feet (300 meters). This type of wire is commonly available  
at Hardware and Electrical Supply stores.  
• All wiring must conform to all local electrical codes and NFPA 70 of  
the National Electrical Code. Refer to NFPA 72, NFPA 101, and/or  
your local building code for further connection requirements.  
6
7
B
A
}
}
8
5
4
3
5
4
3
2
1
1
A. Unswitched 120VAC  
60 Hz source  
B. To Additional Alarms,  
Maximum = 18 Alarms  
1. Smoke/CO Alarm  
2. Ceiling or Wall  
3. Power Connector  
4. Wire Nut  
5. Junction Box  
6. Neutral Wire (White)  
7. Interconnect Wire  
(Orange)  
8. Hot Wire (Black)  
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USING THE OPTIONAL LOCKING FEATURES  
The optional locking features are designed to discourage unauthorized  
Battery Drawer Lock  
removal of the battery or alarm. It is not necessary to activate the locks  
in single-family households where unauthorized battery or alarm  
removal is not a concern.  
Locking Pin  
These Smoke/CO Alarms have two separate locking features: one locks  
the battery compartment, and the other locks the Smoke/CO Alarm to the  
mounting bracket. You can choose to use either feature independently, or  
use them both.  
Tools you will need: • Needle-nose pliers or utility knife  
• Standard/Flathead screwdriver.  
Mounting Bracket Lock  
Both locking features use locking pins, molded into the mounting bracket. Using needle nose pliers or a utility knife, remove one or both pins, depending on  
which locking features you use.  
THE BATTERY COMPARTMENT LOCK  
TO LOCK THE BATTERY COMPARTMENT:  
TO UNLOCK THE BATTERY COMPARTMENT:  
Do not lock the battery compartment until you have activated the battery  
and tested the battery back-up.  
Once the Smoke/CO Alarm is installed, you must disconnect it from the AC  
power before unlocking the battery compartment.  
1. Activate the battery back-up by removing  
the “Pull to Activate Battery Back-Up”  
tab. Push and hold the test button on the  
Smoke/CO Alarm’s cover until the alarm  
sounds: 4 beeps, pause, 4 beeps, pause,  
3 beeps, pause, 3 beeps, pause.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where  
the Smoke/CO Alarm is installed before removing it from the mounting  
bracket. Failure to turn off the power first may result in serious electrical  
shock, injury or death.  
1. Remove the Smoke/CO Alarm from the mounting bracket. If the unit is  
locked to the bracket, see the section “To Deactivate the Locking  
Feature.”  
If the unit does not alarm during  
testing, DO NOT lock the battery  
compartment! Install a new battery  
and test again. If it still does not  
alarm, replace the Smoke/CO  
Alarm immediately.  
2. Disconnect the power connector by gently prying it away from the back  
of the Smoke/CO Alarm.  
3. Insert a flathead screwdriver under the head of the  
locking pin, and gently pry it out of the battery  
compartment lock. (If you plan to re-lock the  
battery compartment, save the locking pin.)  
2. Using needle-nose pliers or a utility  
knife, detach one locking pin from  
the mounting bracket.  
4. To re-lock the battery compartment, close the  
battery door and reinsert the locking pin in the  
lock.  
3. Push the locking pin  
through the black dot on  
the label on the back of  
the Smoke/CO Alarm.  
5. Reconnect the power connector to the back of the Smoke/CO Alarm,  
reattach the Smoke/CO Alarm to the mounting bracket, and restore the  
power.  
When replacing the battery, always test the Smoke/CO Alarm before  
re-locking the battery compartment.  
THE MOUNTING BRACKET LOCK  
TO ACTIVATE THE BRACKET LOCK:  
TO DEACTIVATE THE BRACKET LOCK:  
1. Using needle-nose pliers, detach one locking pin from the mounting  
bracket.  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area  
where the Smoke/CO Alarm is installed before removing it from the  
mounting bracket. Failure to turn off the power first may result in  
serious electrical shock, injury or death.  
2. Insert the locking pin into the lock located on the base as shown in  
the diagram.  
3. When you attach the Smoke/CO Alarm to the mounting bracket,  
the locking pin’s head will fit into a notch on the bracket.  
Always discharge the branch circuit before servicing an AC or  
AC/DC Smoke/CO Alarm. First, turn off the AC power at the circuit  
breaker or fuse box. Next, remove the battery from Smoke/CO  
Alarms with battery back-up. Finally, press and hold the test button.  
1. Insert a flathead screwdriver between the mounting bracket pin and  
the mounting bracket.  
2. Pry the Smoke/CO Alarm away from the bracket by turning both  
the screwdriver and the Smoke/CO Alarm counterclockwise (left)  
at the same time.  
TO PERMANENTLY REMOVE  
THE BRACKET LOCK:  
Insert the flathead screwdriver  
between the locking pin and the  
lock, and pry the pin out of the  
lock.  
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WHAT TO DO IF CARBON MONOXIDE IS DETECTED  
HOW YOUR SMOKE/CO ALARM WORKS  
THE COVER OF YOUR SMOKE/CO ALARM  
“ALARM-MOVE TO FRESH AIR”  
If you hear the alarm horn sound 4 beeps, pause,  
4 beeps, pause, and the RED CO light is flashing,  
move everyone to a source of fresh air.  
1. Test/Silence Button: Press  
and hold to activate test,  
or to silence the alarm.  
2. POWER Light (GREEN)/  
SMOKE ALARM Light (RED)  
3. CO ALARM Light (RED)  
4. Battery Drawer  
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!  
5. (Behind the Cover) Alarm  
Horn: 85dB audible alarm  
for test, alarm, and unit  
malfunction warning.  
IF THE CO ALARM SOUNDS:  
1. Operate the Test/Silence button.  
2. Call your emergency services, fire department or 911. Write down  
the number of your local emergency service here:  
UNDERSTANDING THE LIGHT  
AND HORN PATTERNS  
_____________________________________________________________  
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 Smoke/CO Alarm remains  
in its normal condition.  
Condition  
LED (Red or Green  
Lights)  
Horn  
POWER UP  
Green LED  
Horn remains silent  
flashes ON  
once, then  
shines continuously  
4. After following steps 1-3, if your Smoke/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:  
DURING TESTING  
Smoke & CO  
Red LEDs flash  
once every  
Horn pattern:  
(Smoke) 3 beeps,  
pause, 3 beeps,  
pause;  
second during  
their respective  
repetitive horn  
patterns  
(CO) 4 beeps, pause,  
4 beeps, pause  
LOW OR MISSING  
BATTERY  
Green LED  
flashes  
(with horn)  
Horn “chirps”  
about once a  
minute  
_____________________________________________________________  
ALARM CONDITION  
Interconnected Series  
of Smoke/CO Alarms  
Smoke or CO  
Red LED  
Horn pattern:  
(CO) 4 beeps,  
WHAT TO DO IF SMOKE IS DETECTED  
flashes rapidly  
on the unit that  
triggered the alarm.  
pause, 4 beeps,  
pause repeating  
on all CO Alarms and  
“Smart Interconnect”  
Alarms;  
(Smoke) 3 beeps,  
pause, 3 beeps,  
pause repeating on all  
Smoke, Heat, and  
“Smart Interconnect”  
Alarms  
If you hear the alarm horn sound 3 beeps, pause, 3 beeps,  
pause and the RED SMOKE light is flashing, smoke has  
been detected. Evacuate everyone from the building.  
LEDs on the  
other alarms in  
an interconnected  
series will not flash.  
• 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 disconnect the AC power to quiet an unwanted alarm.  
Disconnecting the power disables the Alarm so it cannot  
sense smoke. This will remove your protection. Instead, open  
a window or fan the smoke away from the unit. The Alarm will  
reset automatically.  
IN ALARM SILENCE  
MODE  
Red Smoke or CO  
LED flashes  
once every  
second on  
initiating unit  
Horn remains silent:  
CO for 4 minutes;  
Smoke for up  
to 15 minutes.  
Horn will sound  
if Smoke or CO  
levels increase.  
• If the unit alarms get everyone out of the house immediately.  
“LATCHING” ALARM  
INDICATOR  
Red Smoke  
Horn remains silent  
and/or CO  
ELECTRICAL SHOCK HAZARD: Attempting to disconnect the  
power connector from the unit when the power is on may result  
in electrical shock, serious injury or death.  
LED flashes  
once every 5 seconds  
MALFUNCTION  
Green LED flashes 3  
times synchro-  
nized with 3  
Horn sounds 3  
consecutive  
rapid chirps  
every minute  
When an interconnected system of AC powered units is in alarm,  
the alarm indicator light on the unit(s) that initiated the alarm will blink  
rapidly. It will remain OFF on any remaining units.  
rapid chirps  
If the unit alarms, get everyone out of the dwelling immediately.  
If the unit alarms and you are certain that the source of smoke is not a  
fire—cooking smoke or an extremely dusty furnace, for example—open a  
nearby window or door and fan the smoke away from the unit. Use the  
Silence Feature to silence the Alarm. This will silence the alarm, and  
once the smoke clears the unit will reset itself automatically.  
IF YOUR SMOKE/CO ALARM SOUNDS  
WHAT TO DO FIRST–IDENTIFY THE TYPE OF ALARM  
Type of Alarm  
What You See and Hear  
Carbon Monoxide  
(CO)  
CO Light:  
Flashing RED  
Horn: 4 beeps,  
pause, 4 beeps,  
pause  
Smoke  
Smoke Light:  
Flashing RED  
Horn: 3 beeps,  
pause, 3 beeps,  
pause  
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WHAT TO DO IN CASE OF FIRE  
WEEKLY TESTING  
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.  
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. The built-in test switch accurately tests the unit’s  
operation as required by Underwriters Laboratories, Inc.  
(UL). NEVER use vehicle exhaust! Exhaust may cause per-  
manent damage and voids your warranty.  
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.  
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.  
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.  
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.  
Never go back inside a burning building for any reason.  
Contact your Fire Department for ideas on making your home safer.  
1. Push and hold the Test/Silence button on the cover until you hear a  
“chirp.” The “chirp” marks the start of the self-test sequence.  
Alarms have various limitations. See "General Limitations of  
Smoke/CO Alarms" for details.  
2. During testing, you will hear a loud, repeating horn pattern: 3 beeps,  
pause, 3 beeps, pause, while the red smoke LED flashes. Then you  
will hear a loud, repeating horn pattern: 4 beeps, pause, 4 beeps,  
pause, while the red CO LED flashes.  
“SMART INTERCONNECT” FEATURE  
This Alarm includes "Smart Interconnect" which enables the Alarm to be  
interconnected with other BRK Smoke, Heat, and "Smart Interconnect"  
CO 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.  
3. When testing a series of interconnected units you must test each  
unit individually. Make sure all units alarm when each one is tested.  
If the Smoke/CO Alarm does not test properly:  
1. Make sure the AC power is applied and battery is fresh and  
installed correctly.  
USING THE SILENCE FEATURE  
2. Be sure the alarm is clean and dust-free.  
3. Test the unit again.  
NEVER disconnect the power to your Smoke/CO Alarm to silence the  
If the Smoke/CO Alarm is still not working properly, replace it immediately.  
Refer to the “Limited Warranty” at the end of this manual.  
horn—use the Silence Feature. Disconnecting the Smoke/CO Alarm  
removes your protection! If the unit will not silence or if it stays in  
silence mode continuously, it should be replaced immediately.  
• 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 fire.  
If there is still a problem, do not try to fix the Alarm yourself.  
This will void your warranty!  
To use the Silence Feature, press the Test/Silence button until  
you hear the acknowledge “chirp” or until the horn is silent.  
• If the Test/Silence button is pressed while the Smoke/CO Alarm  
is in the silence mode, the alarm will start sounding again.  
REGULAR MAINTENANCE  
Use only the replacement batteries listed below. The unit may not  
operate properly with other batteries. Never use rechargeable  
batteries since they may not provide a constant charge.  
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:  
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  
flashing 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.  
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.  
WHEN THE SMOKE ALARM IS SILENCED...  
The Smoke Alarm will remain silent for up to 15 minutes and then return  
to normal operation. If the smoke has not cleared within the silence  
period or if smoke increases to a critical level during the silence period,  
the unit will go back into alarm.  
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.  
Use the Silence Feature only if you are certain of the source of  
smoke. If you are not certain of the source or a fire starts while  
you are clearing smoke, evacuate the house immediately. Not  
responding to an alarm can result in property loss, injury, or death.  
Relocate the unit if it sounds frequent unwanted alarms. See “Where  
This Alarm Should Not Be Installed” for details.  
When the battery back-up becomes weak, the Alarm will “chirp”  
about once a minute (the low battery warning). This warning should  
last 7 days, but you should replace the battery immediately to  
continue your protection. This Alarm must have AC or battery  
power to operate. If AC power fails, and the battery is dead  
or missing, the Alarm cannot operate.  
WHEN THE CO ALARM IS SILENCED...  
The CO Alarm will remain silent for 4 minutes. While the Alarm is  
silenced, it will continue to monitor the air for CO. After 4 minutes, if CO  
levels remain potentially dangerous the horn will start sounding again.  
DO NOT spray cleaning chemicals or insect sprays directly on or near  
the Alarm. DO NOT paint over the Alarm. Doing so may permanently  
damage the Alarm.  
The Silence Feature is intended to temporarily silence the Alarm horn.  
It will not correct a CO problem.  
LOW BATTERY SILENCE FEATURE  
CHOOSING A REPLACEMENT BATTERY:  
This Silence Feature can temporarily quiet the low battery warning  
“chirp” for up to 8 hours if AC power is present. Press the Test/Silence  
button on the Alarm cover until you hear the acknowledge “chirp”.  
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. The Alarm will continue to  
operate as long as AC power is supplied. However, replace the battery  
as soon as possible, to maintain protection in event of a power outage.  
Your Smoke/CO Alarm requires one standard 9V battery. The following  
batteries are acceptable as replacements: Duracell #MN1604, (Ultra)  
#MX1604; Eveready (Energizer) #522. You may also use a Lithium  
battery like the Ultralife U9VL-J for longer service life between battery  
changes. These batteries are available at many local retail stores.  
Actual battery service life depends on the Smoke/CO Alarm and the  
environment in which it is installed. All the batteries specified above  
are acceptable replacement batteries for this unit. Regardless of the  
manufacturer’s suggested battery life, you MUST replace the battery  
immediately once the unit starts “chirping” (the “low battery warning”).  
THE “LATCHING ALARM” INDICATOR:  
The Latching Alarm Indicator is activated after an Alarm is exposed  
to alarm levels of smoke or carbon monoxide. This feature will only  
work with AC power. After smoke or CO levels drop below alarm levels,  
the red smoke or CO LED will begin to flash once every 5 seconds.  
It will continue to flash or “latch” until you clear it by testing the alarm.  
This feature helps emergency responders, investigators, or service  
technicians identify which unit(s) in your home were exposed to alarm  
levels of smoke or carbon monoxide. This can help investigators  
pinpoint the source of smoke or CO.  
Interconnected Alarms. Latching Alarm Indicator shows which Alarm(s)  
in the series were exposed to alarm levels of smoke or carbon monoxide.  
The Latching Alarm Indicator stays ON until you clear it, so it can alert  
you to an alarm that occurred while you were away from home, even  
though smoke or CO present in the air has dropped below alarm levels.  
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HOW CAN I PROTECT MY FAMILY FROM CO  
POISONING?  
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.  
WHAT YOU NEED TO KNOW ABOUT CO  
WHAT IS CO?  
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.  
A CO Alarm is not a substitute for proper maintenance of home  
appliances.  
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.  
SYMPTOMS OF CO POISONING  
Test and maintain all fuel-burning equipment annually. Many local  
gas or oil companies and HVAC companies offer appliance  
inspections for a nominal fee.  
These symptoms are related to CO POISONING and should be  
discussed with ALL household members.  
Mild Exposure: Slight headache, nausea, vomiting, fatigue (“flu-like”  
• 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 fuel-burning  
appliances. Make sure appliances are vented to the outside. Do  
not grill or barbecue indoors, or in garages or on screen porches.  
symptoms).  
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!  
• 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.  
REGULATORY INFORMATION FOR  
SMOKE/CO ALARMS  
FINDING THE SOURCE OF CO AFTER AN ALARM  
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:  
REGULATORY INFORMATION FOR CO ALARMS  
WHAT LEVELS OF CO CAUSE AN ALARM?  
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).  
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  
call.  
UL2034 Required Alarm Points*:  
If the alarm is exposed to 400 ppm of CO, IT MUST ALARM  
BETWEEN 4 and 15 MINUTES.  
If the alarm is exposed to 150 ppm of CO, IT MUST ALARM  
BETWEEN 10 and 50 MINUTES.  
If the alarm is exposed to 70 ppm if CO, IT MUST ALARM  
BETWEEN 60 and 240 MINUTES.  
POTENTIAL SOURCES OF CO IN THE HOME  
Fuel-burning appliances  
like: portable heater,  
gas or wood burning  
fireplace, gas kitchen  
range or cooktop, gas  
clothes dryer.  
* 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.  
Damaged or insufficient  
venting: corroded or  
disconnected water  
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.  
heater vent pipe, leaking  
chimney pipe or flue, or  
cracked heat exchanger,  
blocked or clogged  
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 headaches.  
chimney opening.  
An exposure to 400 ppm of CO may cause headaches in average,  
healthy adults after 35 minutes, but can cause death after 2 hours.  
Improper use of appliance/device: operating a barbecue grill or  
vehicle in an enclosed area (like a garage or screened porch).  
Standards: Underwriters Laboratories Inc. Single and Multiple Station  
carbon monoxide alarms UL2034.  
Transient CO Problems: “transient” or on-again-off-again CO problems  
can be caused by outdoor conditions and other special circumstances.  
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.  
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  
fans.  
• Several appliances running at the same time competing for limited  
fresh air.  
• Vent pipe connections vibrating loose from clothes dryers,  
furnaces, or water heaters.  
Gas Detection at Typical Temperature and Humidity Ranges: The CO  
Alarm is not formulated to detect CO levels below 30 ppm typically.  
• Obstructions in or unconventional vent pipe designs which can  
amplify the above situations.  
Audible Alarm: 85dB minimum at 10 feet (3 meters).  
2. Extended operation of unvented fuel burning devices (range, oven,  
fireplace).  
3. Temperature inversions, which can trap exhaust close to the ground.  
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.  
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REGULATORY INFORMATION FOR SMOKE ALARMS  
RECOMMENDED LOCATIONS FOR SMOKE ALARMS  
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 bed-  
room. 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˚ C) and 100˚ F  
(38˚ C). Make sure no door or other obstruction could keep smoke from  
reaching the Smoke Alarms.  
ABOUT SMOKE ALARMS  
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.  
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 qualified electrician.  
Wireless Interconnected Alarms: Offer the same interconnected  
functionality as with hardwired alarms, without wires. Units are easy  
to install and do not require professional installation. They provide  
protection even when electricity fails, provided the batteries are fresh  
and correctly installed.  
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.  
Smoke Alarms for Solar or Wind Energy users and battery backup  
power systems: AC powered Smoke Alarms should only be operated  
with true or pure sine wave inverters. Operating this Smoke 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.  
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.  
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. These units can be interconnected  
so if one unit senses smoke, all units alarm.  
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.  
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 unit to install,  
refer to NFPA (National Fire Protection Association) 72 (National Fire  
Alarm 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.  
SPECIAL COMPLIANCE CONSIDERATIONS  
This unit alone is not a suitable substitute for complete fire  
detection systems in places housing many people—like apartment  
buildings, condominiums, hotels, motels, dormitories, hospitals,  
long-term health care facilities, nursing homes, day care facilities,  
or group homes of any kind—even if they were once single-family  
homes. It is not a suitable substitute for complete fire detection  
systems in warehouses, industrial facilities, commercial buildings,  
and special-purpose non-residential buildings which require special  
fire detection and alarm systems. Depending on the building codes  
in your area, this unit may be used to provide additional protection  
in these facilities.  
INSTALLING SMOKE ALARMS IN MOBILE HOMES &  
RVS  
For minimum security install one Smoke 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. Smoke Alarms should be installed where temperatures normally  
remain between 40˚ F (4˚ C) and 100˚ F (38˚ C). WARNING: Test units  
used in RVs after the vehicle has been in storage, before every trip,  
and once a week while in use. Failure to test units used in RVs as  
described may remove your protection.  
The following information applies to all four types of buildings listed  
below:  
In new construction, most building codes require the use of AC or  
AC/DC powered Smoke Alarms only. AC, AC/DC, or DC powered  
Smoke Alarms can be used in existing construction as specified by  
local building codes. Refer to NFPA 72 (National Fire Alarm 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.”  
1. Single-Family Residence:  
This equipment should be installed in accordance with NFPA (National  
Fire Protection Association) 72 and 101. National Fire Protection  
Association, One Batterymarch Park, Quincy, MA 02269-9101. Additional  
local building and regulatory codes may apply in your area. Always  
check compliance requirements before beginning any installation.  
Single family home, townhouse. It is recommended this unit be installed  
on every level of the home, in every bedroom, and in each bedroom  
hallway.  
2. Multi-Family or Mixed Occupant Residence:  
Apartment building, condominium. This unit is suitable for use in individual  
apartments or condos, provided a primary fire detection system already  
exists to meet fire detection requirements in common areas like lobbies,  
hallways, or porches. Using this unit in common areas may not provide  
sufficient warning to all residents or meet local fire protection ordinances/  
regulations.  
AGENCY PLACEMENT RECOMMENDATIONS  
NFPA 72 (National Fire Code)  
Smoke Alarms shall be installed in each separate sleeping room, outside  
each sleeping area in the immediate vicinity of the bedrooms and on each  
additional story of the family living unit, including basements and excluding  
crawl spaces and unfinished attics.  
In new construction, Alarms shall be so arranged that operation of any  
one Alarm shall cause the operation of all Alarms within the dwelling.  
3. Institutions:  
Hospitals, day care facilities, long-term health care facilities. This unit is  
suitable for use in individual patient sleeping/resident rooms, provided  
a primary fire detection system already exists to meet fire detection  
requirements in common areas like lobbies, hallways, or porches.  
Using this unit in common areas may not provide sufficient warning to  
all residents or meet local fire protection ordinances/regulations.  
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 base-  
ment, bedrooms, dining room, furnace room, utility room, and hallways  
not protected by the required Smoke Alarms. The installation of Smoke  
Alarms in kitchens, attics (finished or unfinished), or garages is not  
normally recommended, as these locations occasionally experience  
conditions that can result in improper operation.  
4. Hotels and Motels:  
Also boarding houses and dormitories. This unit is suitable for use  
inside individual sleeping/resident rooms, provided a primary fire  
detection system already exists to meet fire detection requirements  
in common areas like lobbies, hallways, or porches. Using this unit in  
common areas may not provide sufficient warning to all residents or  
meet local fire protection ordinances/regulations.  
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 garages.  
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GENERAL LIMITATIONS OF SMOKE/CO ALARMS  
This Smoke/CO Alarm is intended for residential use. It is not intended  
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.  
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 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  
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  
emergency.  
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.  
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 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 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 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/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  
TROUBLESHOOTING GUIDE  
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Alarm is installed BEFORE removing it from the mounting bracket or  
checking any electrical connections! Failure to turn off the power first may result in serious electrical shock, injury or death.  
If your Alarm does this...  
It means...  
You should...  
Green light is OFF. Unit will not alarm when you  
press the Test/Silence button.  
Unit may not be receiving any power.  
Check the AC power supply. Make sure the  
power connector is securely attached to the  
alarm. Make sure a fresh 9V battery is installed  
to power the battery back-up*.  
Green light flashes ON, once a minute (horn is  
silent).  
Alarm is not receiving AC power.  
Unit is operating on battery back-up.  
Check the AC power supply.  
Once a minute, the Green light flashes and the  
horn “chirps”.  
Low battery warning. Battery is low or missing.  
Replace the battery, avoid interrupting AC  
power.  
Once a minute, the alarm sounds 3 quick  
“chirps”, and the green light flashes quickly  
three times.  
MALFUNCTION SIGNAL. Unit needs to be  
replaced. Based on self-diagnostic tests, the  
unit has detected a fault.  
Units under warranty should be returned to  
manufacturer for replacement. See “Limited  
Warranty” for details.  
Alarm goes back into alarm after you pressed  
the Test/Silence button to silence an alarm.  
Smoke and/or CO levels are still potentially  
dangerous.  
Refer to “If Your Smoke/CO Alarm Sounds” for  
details on how to respond to an alarm. If anyone  
is feeling ill, EVACUATE your home immediately  
and call 911.  
Alarm sounds frequently even though no high  
levels of smoke or CO are revealed in an  
investigation.  
The Alarm may be improperly located. Refer to  
“Where to Install This Alarm.”  
Relocate your alarm. If frequent alarms continue,  
have home rechecked for potential problems.  
You may be experiencing an intermittent smoke  
or CO problem.  
*For a list of acceptable replacement batteries, see “Regular Maintenance.”  
If you have any questions that cannot be answered by reading this manual, call Consumer Affairs: 1-800-323-9005.  
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LIMITED WARRANTY  
BRK Brands, Inc., ("BRK") the maker of BRK® brand and First Alert® brand products, warrants that for a period of five 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: BRK Brands, Inc., 25 Spur Drive, El Paso, TX 79906  
Battery: BRK Brands, Inc. make no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose  
with respect to battery.  
For your records, please record:  
Date Purchased: _______________________________  
Where Purchased: __________________________________________  
Date Installed: ____________/____________Month/Year  
Replacement date is five years after installation: ________/______  
Month/Year  
NOTE: End of Life Signal — Once the unit reaches the end of its  
lifecycle, the MALFUNCTION SIGNAL will sound once a minute  
to indicate the need to immediately replace the Alarm.  
BRK Electronics® is a registered trademark of BRK Brands, Inc.  
First Alert® is a registered trademark of the First Alert Trust.  
Printed in Mexico M08-0094-004 K1 10/07  
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