BRK electronic Carbon Monoxide Alarm SCO500 User Manual

WHAT YOU WILL SEE AND HEAR WITH THIS ALARM  
WHERE THIS ALARM SHOULD NOT BE INSTALLED  
IMPORTANT! PLEASE READ CAREFULLY AND SAVE.  
OPTIONAL LOCKING FEATURES  
The optional locking features are designed to prevent unauthorized removal of the batteries or alarm. It is not necessary to activate the locks  
in single-family households where unauthorized battery or Alarm removal is not a concern.  
These Alarms have two separate locking features: one to lock the battery compartment, and the other to lock the  
Alarm to the mounting bracket. You can choose to use either feature independently, or use them both.  
Do NOT locate this Smoke/CO Alarm:  
USER’S MANUAL  
This users manual contains important information about your  
Combination Carbon Monoxide & Smoke Alarms 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.  
Under Normal Operations  
In garages, furnace rooms, crawl spaces and unfinished attics. Avoid  
extremely dusty, dirty or greasy areas.  
Voice: Silent  
Power/Smoke LED: Flashes Green  
once a minute  
ONELINK® TALKING COMBINATION  
SMOKE/CARBON MONOXIDE ALARM WITH  
PROGRAMMABLE LOCATION  
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.  
Horn: Silent  
CO LED: Off  
When You Test the Alarm  
Tools you will need: • Needle-nose pliers • Standard flathead screwdriver.  
Both locking features use locking pins, which are molded into the mounting bracket. Depending on which locking  
features you use, remove one or both pins from the mounting bracket using needle-nose pliers.  
Voice: Testing.” Horn: 3 beeps, pause, 3 beeps; Voice: “Warning,  
evacuate smoke in [Location, example: “Basement”].  
Evacuate.”  
Smoke LED: Flashes Red in sync with the horn pattern  
Horn: 4 fast beeps, pause, 4 fast beeps;  
Voice: “Warning, evacuate carbon monoxide in [Location, example:  
“Basement”]. Evacuate.” Pause. “Highest carbon monoxide  
level was [CO level example: _0_ ppm].  
FIRE SAFETY TIPS  
Features:  
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 accumulate.  
Separate sensors to detect  
smoke and CO; the two  
alarm sensors work  
independently  
To permanently remove either locking pin, insert a flathead screwdriver between the locking pin and the  
lock, and pry the pin out of the lock.  
Voice with programmable  
location  
Separate audible and visual  
signals to indicate alarm  
levels of smoke or CO  
CO LED: Flashes Red in sync with the horn pattern  
TO LOCK THE BATTERY COMPARTMENT  
TO UNLOCK THE BATTERY COMPARTMENT  
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.  
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.  
If Battery Becomes Low or is Missing  
Do not lock the battery compartment until you install the  
batteries and test the Alarm.  
1. Remove the Alarm from the  
mounting bracket. If the unit is  
locked to the bracket, see the  
section “To Unlock the Mounting  
Bracket.”  
Voice: “Replace battery in [Location, example “Kitchen”].” Repeated  
Wireless interconnect  
Powered by two “AA”  
batteries  
every 5 hours  
Horn: chirps once a minute  
Power/Smoke LED: Flashes Green On for 2 seconds/Off for  
2 seconds. Low Battery Latch is now engaged.  
CO LED: Off  
If the unit does not alarm during  
testing, DO NOT lock the battery  
compartment! Install new batteries  
and test again. If the Alarm still does  
not alarm, replace it immediately.  
Side access drawer for  
easy battery replacement  
2. 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  
relock the battery compartment,  
save the locking pin.)  
In direct sunlight.  
In turbulent air, like near ceiling fans or open windows. Blowing air  
may prevent CO or smoke from reaching the sensors.  
BASIC SAFETY INFORMATION  
If Alarm is Not Operating Properly (MALFUNCTION SIGNAL)  
UL STANDARD 217  
UL STANDARD 2034  
Voice: “Detector error in [Location, example “Kitchen”], please see  
manual” (refer to Troubleshooting Guide).  
Repeated every 5 hours.  
Horn: Three rapid chirps every minute  
Power/Smoke LED: Flashes approximately once a minute  
CO LED: Off  
Printed in Mexico  
M08-0146-004 J1  
03/07  
• 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.  
In areas where temperature is colder than 40˚ F (4˚ C) or hotter than  
100˚ F (38˚ C). These areas include non-airconditioned crawl spaces,  
unfinished attics, uninsulated or poorly insulated ceilings, porches,  
and garages.  
1. Using needle-nose pliers, detach  
one locking pin from the mounting  
bracket.  
Model SCO500  
3. To relock the battery compartment,  
close the battery door and reinsert  
locking pin in lock.  
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.  
2. After batteries are inserted, then  
push the locking pin through the  
hole near the battery door latch on  
the back of the Alarm.  
4. Reattach the Alarm to the mounting  
bracket.  
INTRODUCTION  
Alarm Levels of CO are Detected  
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.  
Thank you for choosing First Alert® for your Smoke and Carbon  
Monoxide Alarm needs. You have purchased a state-of-the-art Smoke &  
Carbon Monoxide Alarm designed to provide you with early warning of a  
smoke and/or Carbon Monoxide danger. Key features include:  
Voice: “Warning, evacuate carbon monoxide in [Location, example:  
In “dead air” spaces. See “Avoiding Dead Air Spaces.  
“Kitchen”]. Evacuate.” “____ ppm.”  
Horn: 4 beeps, pause, 4 beeps, voice*  
Power/Smoke LED: Off  
CO LED: During Alarm: Flashes Red in sync with the horn pattern.  
After Alarm: Flashes Red On for 2 seconds/Off for 2  
seconds. CO Alarm Latch is now engaged.  
When replacing the batteries, always  
test the Alarm before relocking the  
battery compartment.  
AVOIDING DEAD AIR SPACES  
“Dead air” spaces may prevent smoke from reaching the Smoke/CO  
Alarm. To avoid dead air spaces, follow installation recommendations  
below.  
Smoke & Carbon Monoxide Combination Alarm. One alarm protects  
against two deadly household threats.  
®
ONELINK Enabled. Alarm automatically communicates with other  
ONELINK® enabled alarms when installed.  
TO LOCK THE MOUNTING BRACKET  
TO UNLOCK THE MOUNTING BRACKET  
*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.  
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.  
• This Smoke/CO Alarm cannot operate without working  
batteries. Removing the batteries for any reason, or failing to  
replace the batteries at the end of their service life, removes  
your protection.  
• 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.  
Exclusive Voice Warning with Location will tell you the preprogrammed  
location of the initiating unit and danger detected. Programmable up to  
11 locations (ex. "basement"). When alarms sounds, if programmed for  
basement it will say "Warning, evacuate, smoke in basement" along with  
all other installed ONELINK® Voice alarms.  
Spread Spectrum Horn Tone. Lower and varying horn frequency  
makes it easier for elderly with normal age related hearing loss to hear  
horn. Sweeps through the 2200 – 3400 Hz range.  
RF Interconnect. Reliable and secure radio frequency communication  
between alarms. 915 MHz frequency with 65,000 security codes and 3  
channel frequency hopping.  
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 features.  
Two Silence Features. Temporarily silence low battery chirp for up to  
eight hours before replacing low battery or silence an unwanted alarm  
for several minutes.  
Two Latching Features. Alarm Latch: Easily identifies initiating alarm  
even after alarm condition has subsided. Low Battery Latch: Identifies  
which unit is in low battery condition.  
Perfect Mount System includes a gasketless base for easy installation  
and a mounting bracket that keeps the alarm secure over a wide  
rotation range to allow for perfect alignment.  
6 Year End of Life Timer. Every 24 hours of operation a counter stored  
in memory is updated. When the count equals 6 years of true operation,  
meaning actually powered-up, a malfunction chirp (triple chirp) will  
sound once a minute at the time of the 45 second Power-LED flash.  
1. Using needle-nose pliers, detach  
one locking pin from the mounting  
bracket.  
1. Insert a flathead screwdriver into the  
rectangular cut-out on the mounting  
bracket nearest to the locking pin.  
Smoke is Detected  
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”  
spaces.  
Voice: “Warning, evacuate smoke in [Location, example: “Kitchen”].  
Evacuate.”  
2. Pry the Alarm away from the bracket  
by pushing up on the screwdriver and  
turning the Alarm counterclockwise  
(left) at the same time.  
Horn: 3 beeps, pause, 3 beeps, voice  
2. Insert the locking pin through the  
hole on the back of the Alarm as  
shown in the diagram.  
Power/Smoke LED: During Alarm: Flashes Red in sync with the  
horn pattern. After Alarm: Flashes Red On for 2 seconds/  
Off for 2 seconds. Smoke Alarm Latch is now engaged.  
CO LED: Off  
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.  
3. When you attach the Alarm to the  
mounting bracket, the locking pin’s  
head will fit into a notch on the  
bracket.  
Smoke Alarm is Silenced  
Voice: Silent  
CO Alarm is Silenced  
Voice: Silent  
Horn: Off  
Horn: Off  
HOW TO INSTALL THIS ALARM  
Power/Smoke LED: Flashes Red  
CO LED: Off  
Power/Smoke LED: Off  
CO LED: Flashes Red  
For quick installation instructions see the “Quick and Easy Guide to  
Programming Your ONELINK® Alarm and Using the Optional Features.  
IF THE SMOKE ALARM SOUNDS  
RESPONDING TO AN ALARM  
IF YOUR SMOKE/CO ALARM SOUNDS  
WHAT TO DO FIRST–IDENTIFY THE TYPE OF  
ALARM SIGNAL  
Refer to previous section “What You Will See and Hear With This  
Alarm.  
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.  
INSTALLATION  
WHERE TO INSTALL THIS ALARM  
Minimum coverage for Smoke Alarms, as recommended by the  
National Fire Protection Association (NFPA), is one Smoke Alarm on  
every floor, in every sleeping area, and in every bedroom (See  
“Regulatory Information For Smoke Alarms” for details on the NFPA  
recommendations).  
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 auto-  
matically.  
PARTS OF THIS SMOKE/CO ALARM  
IF THE CO ALARM SOUNDS  
STEP BY STEP GUIDE TO PROGRAMMING  
THIS ALARM  
1
2
3
4
Test/Silence Button  
Battery Compartment  
Power/Smoke Alarm LED  
CO Alarm LED  
“ALARM-MOVE TO FRESH AIR”  
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.  
If you hear the CO alarm horn and the CO red light is flashing,  
FOR FIRST TIME AND WHEN CHANGING BATTERIES  
move everyone to a source of fresh air.  
© 2007 BRK Brands, Inc., a subsidiary of Jarden Corporation.  
3901 Liberty Street Road, Aurora, IL 60504-8122  
All rights reserved.  
DO NOT remove the batteries!  
Action:  
Alarm Will Say:  
If the unit alarms get everyone out of the house immediately.  
1. Insert batteries (2, AA batteries).  
“Welcome, First Alert Smoke and  
Carbon Monoxide Alarm.”  
Consumer Affairs: (800) 323-9005 • www.firstalert.com  
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.  
WHAT TO DO IN CASE OF FIRE  
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!  
“No location programmed” if first  
time or “[Location, example:  
“Basement”] location programmed”  
when changing batteries.  
To select location, press and hold  
test button now.”  
Tools you will need: pencil, drill with 3/16” or 5mm drill bit,  
Phillips screwdriver, hammer.  
®
• Don’t panic; stay calm. Follow your family escape plan.  
All First Alert Smoke Alarms conform to regulatory requirements,  
including UL217 and are designed to detect particles of combustion.  
Smoke particles of varying number and size are produced in all fires.  
• Get out of the house as quickly as possible. Don’t stop to get  
dressed or collect anything.  
IF THE CO ALARM SIGNAL SOUNDS:  
1. Operate the Test/Silence button.  
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.  
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.  
• 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.  
2. Call your emergency services, fire department or 911. Write down the  
number of your local emergency service here:  
In general, install combination Smoke and Carbon Monoxide Alarms:  
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).  
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.  
• 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.  
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.  
If you want to lock the battery compartment, or lock the Smoke/CO  
Alarm to the mounting bracket, please read the “Optional Locking  
Features” section in the “Quick and Easy Guide to Programming  
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.  
• Call the Fire Department as soon as possible from outside.  
Give your address, then your name.  
3. After you hear the location of  
where you are placing the Alarm,  
Press & Hold the Test Button.  
“[Location, example: “Basement”]  
location saved.”  
If no location is chosen:  
“No location saved.”  
®
Your ONELINK Alarm and Using the Optional Features” attachment  
For maximum protection, use both types of Smoke Alarms on  
each level and in every bedroom of your home.  
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˚ C and 38˚ C).  
before you begin installation.  
• Never go back inside a burning building for any reason.  
1. Hold the mounting bracket against the ceiling (or wall) so the vertical  
mounting slot is aligned in the 12 o’clock position and trace around  
the inside of the mounting slots (vertical and horizontal mounting).  
• Contact your Fire Department for ideas on making your home  
safer.  
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 tech-  
nician 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:  
Your Alarm has now been programmed for the location of your choice.  
Available locations:  
WIRELESS OPERATION  
First Alert® ONELINK® Technology is the easy, cost-effective way to  
provide your family with whole-home safety. All ONELINK® Alarms  
communicate with each other without wires or connectors. When one  
Alarm sounds, they all sound. This provides your family with an earlier  
warning of potential danger, and gives you more time to react.  
The communication distance (range) between any two ONELINK® Alarms  
is typically 50 feet (15 meters) inside of a home. Some features of a  
home, such as the number of floors, number/size of rooms, furniture and  
types of building materials used may reduce the range of the Alarms.  
Examples include: suspended ceilings, ductwork, large metallic appli-  
ances (refrigerators) and metal studs. A feature of ONELINK® Alarms is  
that they operate as a mesh network. All Alarms will repeat any alarm  
signal that is received to all other ONELINK® Alarms. Interference from  
structural conditions can be overcome by adding additional Alarms to  
route the wireless signal around obstructions.  
Basement  
Living Room  
Family Room  
Office  
Kitchen  
Child’s Bedroom  
Master Bedroom  
Guest Bedroom  
Utility Room  
2. Put the unit where it won’t get covered with dust when you drill the  
mounting holes.  
Alarms have various limitations. See "General Limitations of  
Smoke/CO Alarms" for details.  
SUGGESTED AREAS FOR INSTALLING  
SMOKE ALARMS, CO ALARMS, AND COMBO UNITS  
Dining Room  
No Location  
Hallway  
3. Using a 3/16” (5 mm) drill bit, drill a hole through the center of the  
oval outlines you traced.  
KEY:  
USING THE SILENCE FEATURES  
4. 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.  
SMOKE ALARMS  
®
SMOKE ALARM WITH  
SILENCE FEATURE  
ADDING AND LINKING ADDITIONAL ONELINK  
ALARMS  
NOTE: Steps 1 through 3 need to be completed within two minutes.  
If more than two minutes pass, the Green power LED will stop  
blinking. Simply open the battery drawer of the second Alarm and  
repeat steps 1 through 3.  
1. Insert the batteries into the  
battery drawer of the next  
Alarm. DO NOT CLOSE THE  
DRAWER.  
Never remove the batteries to quiet an unwanted alarm. Removing  
the batteries disables the alarm and removes your protection.  
5. Line the mounting bracket up over the plastic screw anchors.  
CO ALARMS  
____________________________________________________________  
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.  
6. Screw the mounting bracket to the ceiling or wall through the  
mounting slots using the two screws provided.  
BOTH, OR COMBINATION  
SMOKE/CO ALARMS  
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  
AFTER AN ALARM  
7. Attach the Smoke/CO Alarm to the  
mounting bracket. Line up the guides  
on the alarm’s base with the guides  
on the mounting bracket. When guides  
are lined up, turn the base clockwise  
(right) until it snaps into place.  
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:  
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.  
before beginning any installation.  
In new construction AC and AC/DC smoke alarms MUST  
be interconnected to meet NFPA recommendations.  
The range and proper operation of any wireless device will  
vary depending on its surroundings. It is very important that  
each Alarm is tested individually before and after installation  
to make sure that all Alarms respond properly.  
The ONELINK Alarms are not to be used outdoors or to  
transmit between buildings. The Alarms will not communicate  
properly under these conditions.  
Metal objects and metallic wallpaper may interfere with  
signals from wireless Alarms. Alarms should be tested after  
changes to your home such as remodeling, moving furniture,  
and with metal doors opened and closed.  
After the Test/Silence button is released, the Red LED blinks during the  
silence mode.  
Action:  
1. Press & Hold Test Button  
Alarm Will Say:  
“Highest carbon monoxide level  
was ___ ppm. Please see manual.”  
To clear highest carbon monoxide  
level, press and hold test button  
now.”  
2. Press and hold the test  
button and then close the  
battery drawer.  
NOTE: Once the Alarm is snapped  
onto the mounting bracket, you  
can rotate the Alarm to adjust the  
alignment.  
Recommended Placement  
When the Smoke Alarm  
is Silenced  
When the CO Alarm  
is Silenced  
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.  
®
3. Once you hear the unit chirp,  
release the test button.  
The Smoke Alarm will remain  
silent for up to 15 minutes, then  
return to normal operation.  
The CO Alarm will remain silent  
for up to 4 minutes.  
8. Test the Smoke/CO Alarm.  
See “Weekly Testing” for details.  
The Green power LED will start to blink indicating the ONELINK®  
Alarm is waiting for program data from one of the other setup  
ONELINK® Alarms.  
When installing on the ceiling, place the Alarm as close to the center  
as possible.  
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.  
“Highest carbon monoxide level  
cleared.”  
After 4 minutes, if CO levels  
remain potentially dangerous the  
horn will start sounding again.  
In either case, install at least 4 inches (102 mm) from where the  
wall and ceiling meet. See “Avoiding Dead Air Spaces” for more  
information.  
If the smoke has not cleared–or  
continues to increase–the device  
will go back into alarm.  
4. Press and hold the test button on the first Alarm, until the second  
Alarm chirps and its Green power LED stops blinking. Then release  
the test button.  
5. If you have purchased the hardwired battery back-up ONELINK®  
Alarm, you can now connect the hardwired Alarm by installing the  
three-wire connector on the ceiling to the Alarm.  
Alarm will say nothing.  
Your First Alert® ONELINK® Smoke/CO Alarm will automatically commu-  
nicate both potential fires and carbon monoxide presence with all other  
First Alert® ONELINK® Smoke/CO Alarms.  
NOTE: For any location, make sure no door or other obstruction could  
keep carbon monoxide or smoke from reaching the Alarm.  
FCC NOTICE: 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. FCC ID: M7U5001L  
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.  
6. Repeat steps 1-5 for additional ONELINK® Alarms.  
®
You have now successfully linked your new ONELINK Alarms. To  
add additional Alarms at a later time, follow steps 1 through 5.  
Changes or modifications not expressly approved by BRK Brands,  
Inc. could void the user’s authority to operate the equipment.  
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OPTIONAL LOCKING FEATURES  
The optional locking features are designed to discourage unauthorized removal  
of the batteries or alarm. It is not necessary to activate the locks in single-family  
households where unauthorized battery or alarm removal is not a concern.  
All Alarms Respond as One  
This Smoke/CO Alarm has two separate locking features: one to lock the battery  
compartment, and the other to lock the Smoke/CO Alarm to the mounting bracket.  
You can choose to use either feature independently, or use them both.  
QUICK AND EASY GUIDE TO PROGRAMMING  
TM  
YOUR ONELINK ALARM AND  
USING THE OPTIONAL FEATURES  
Tools you will need: • Needle-nose pliers • Standard flathead screwdriver.  
Both locking features use locking pins, which are  
molded into the mounting bracket. Depending on  
which locking features you use, remove one or  
both pins from the mounting bracket using needle-  
nose pliers.  
M08-0147-000  
O
04/05  
MODEL SCO500  
Printed in Mexico  
All Rights Reserved. © 2005 BRK Brands, Inc.  
BRK Brands, Inc., 3901 Liberty Street Road, Aurora, IL 60504-8122  
Consumer Affairs: (800) 323-9005 • www.firstalert.com  
To permanently remove either locking pin, insert  
a flathead screwdriver between the locking pin  
and the lock, and pry the pin out of the lock.  
QUICK INSTALLATION INSTRUCTIONS  
1. Insert two (2) AA batteries into the battery drawer of the first Alarm and close the  
drawer.  
2. The Alarm will sound with a chirp.  
TO LOCK THE BATTERY COMPARTMENT  
Do not lock the battery compartment until you install the batteries and test the  
Smoke/CO Alarm.  
3. You will now be prompted to set the Alarm's location. Follow the direction given  
by the Alarm.  
Available locations:  
1. Install the batteries before attaching the Alarm to the  
bracket. Insert the two (2) AA batteries (included) into the  
battery compartment. Match the terminals on the end of  
the battery with the terminals on the unit. Match “+” to “+”  
and “-” to “-.”  
Basement  
Living Room  
Family Room  
Office  
Kitchen  
Child’s Bedroom  
Master Bedroom  
Guest Bedroom  
Utility Room  
Dining Room  
No Location  
Hallway  
Your Alarm has now been programmed for the location of your choice.  
If the batteries are not fully inserted, the unit cannot receive  
battery power.  
NOTE: Steps 4 through 6 need to be completed within two minutes. If more  
than two minutes pass, the Green power LED will stop blinking. Simply open  
the battery drawer of the second Alarm and repeat steps 4 through 6.  
2. Push and hold test button until the alarm sounds.  
4. Insert the batteries into the battery drawer of the next Alarm. DO NOT CLOSE  
If the unit does not alarm during testing, DO NOT lock the battery compartment!  
Install new batteries and test again. If the unit still does not alarm, replace it  
immediately.  
3. Using needle-nose pliers, detach one locking pin from the mounting bracket.  
4. Push the locking pin through the hole near the battery door latch on the back of  
the Smoke/CO Alarm.  
THE DRAWER.  
5. Press and hold the test button and then close the battery drawer.  
6. Once you hear the unit chirp, release the test button. The Green power LED will  
start to blink indicating the ONELINKTM Alarm is waiting for program data from  
one of the other setup ONELINKTM Alarms.  
7. Press and hold the test button on the first Alarm, until the second Alarm chirps  
and its Green power LED stops blinking. Then release the test button.  
8. If you purchased the Talking Smoke and Carbon Monoxide Alarm, you will now be  
prompted to set the Alarm's location. Follow the directions given by the Alarm.  
9. If you have purchased the hardwired battery back-up ONELINKTM Alarm, you can  
now connect the hardwired Alarm by installing the three-wire connector on the  
ceiling to the Alarm.  
10. Repeat steps 4-9 for additional ONELINKTM Alarms.  
TO UNLOCK THE BATTERY COMPARTMENT  
1. Remove the Smoke/CO Alarm from the mounting bracket. If the unit is locked to  
the bracket, see the section “To Unlock the Mounting Bracket.”  
2. 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.)  
You have now successfully linked your new ONELINKTM Alarms.  
To add additional Alarms at a later time, follow steps 4 through 9.  
3. To relock the battery compartment, close the battery door and  
reinsert locking pin in lock.  
4. Reattach the Smoke/CO Alarm to the mounting bracket.  
IF YOU ARE CHANGING THE BATTERIES  
When replacing the batteries, always test the Smoke/CO Alarm before relocking  
the battery compartment.  
Action:  
Alarm Will Say:  
1. Insert batteries (2, AA batteries).  
“Welcome, First Alert Carbon Monoxide  
and Smoke Alarm. Location [If location  
already programmed, example “Kitchen”]  
programmed. To select location, press  
and hold test button now.”  
TO LOCK THE MOUNTING BRACKET  
1. Using needle-nose pliers, detach one locking pin from the mounting bracket.  
2. Insert the locking pin through the hole on the back of the Smoke/CO Alarm 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.  
2. Press & Hold Test Button if you would  
like to change the location.  
To change 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 Button.  
“[Location, example “Kitchen”]  
location saved.”  
If no location is chosen: “No location  
saved.”  
TO UNLOCK THE MOUNTING BRACKET  
1. Insert a flathead screwdriver into the rectangular cut-out  
on the mounting bracket nearest to the locking pin.  
2. Pry the Smoke/CO Alarm away from the bracket by  
pushing up on the screwdriver and turning the Smoke/  
CO Alarm counterclockwise (left) at the same time.  
Your Alarm has now been programmed for the location of your choice.  
Available locations:  
Basement  
Living Room  
Family Room  
Office  
Kitchen  
Child’s Bedroom  
Master Bedroom  
Guest Bedroom  
Utility Room  
Dining Room  
No Location  
Hallway  
USING THE SILENCE FEATURES  
Never remove the batteries to quiet an unwanted alarm. Removing the batteries  
disables the alarm and removes your protection.  
The Alarm Silence Feature can temporarily quiet an unwanted alarm for several  
minutes. You can silence the Smoke/CO Alarm by pressing the Test/Silence button  
on the alarm cover for at least 6 seconds.  
After the Test/Silence button is released, the Alarm Voice will say “Horn silenced,  
detector active.”  
The Low Battery Warning 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 for at least 3-5 seconds.  
Once the low battery warning “chirp” silence feature is activated, the unit continues to  
flash the Green light twice a minute for 8 hours. After 8 hours, the low battery “chirp”  
will resume. Replace the batteries as soon as possible; this unit will not operate  
without battery power!  
First Alert® is a registered trademark of the First Alert Trust.  
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