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Replacement Sensor Pack

®

Module For 

First Alert

®

Carbon Monoxide Alarms Model FCD1, FCD1AC,
NICO, NICOAC, FACO, FACOAC
and 

BRK Electronics

®

Models

BRKDCO, BRKCO, CO1000B,
CO1120B and 

Family Gard

®

Model GCD1

1-year warranty 
on replacement
SensorPack

®

Module.

Details in this User’s
Manual.

Spanish/English
Instructions Enclosed.

BRK Brands, Inc. 
3901 Liberty Street Road, 
Aurora, IL 60504-8122

Consumer Affairs: 
1-800-323-9005 
www.firstalert.com

U.S. Patent: #5,603,164 
(Quantum Group Inc.)

©2004, BRK Brands, Inc.          M08-0057-001   07/04
All Rights Reserved 
Made in Mexico

Table of Contents

How the SensorPack

®

Module Works  . . . . . . . . . . .1

How to Install the SensorPack

®

Module  . . . . . . . . .2

Weekly Testing of Your CO Alarm  . . . . . . . . . . . . . .3

What To Do If Your CO Alarm Sounds  . . . . . . . . . .3

Limited Warranty  . . . . . . . . . . . . . . . . . . . . . . . . . . .4

YOUR CO ALARM IS NOT A SMOKE ALARM!
It is designed to detect carbon monoxide from ANY
source of combustion. It is NOT designed to detect
smoke, fire, or any other gas.

The unit will not work without a properly installed
SensorPack

®

Module. The SensorPack

®

Module will

only warn of carbon monoxide when installed in a 
compatible CO Alarm.

How the SensorPack

®

Module Works

The patented SensorPack

®

Module contains two 

sensor discs, which mimic the body’s response to CO
over time, and a sealed battery that powers the unit.
When the SensorPack

®

Module is installed in the unit,

light shines through the sensor discs to a receiver.
When no CO is present, light passes through the discs
freely; when the sensor is exposed to CO, the discs
darken. If they darken enough, a “critical” amount of
light is blocked, and the alarm’s horn sounds.

Models NICO, NICOAC, FCD1, and FCD1AC

If the unit alarms, and no one is feeling symptoms of
CO poisoning, you can press the Test/Silence
(Test/Reset) Button on the unit to quiet the alarm signal.
Do not remove the SensorPack

®

Module. (Refer to

“What To Do If Your CO Alarm Sounds”.) The unit will
continue monitoring the air for CO while the sensors
clear. As long as the CO levels remain below 100 ppm
and continue to drop, the unit will remain quiet. If CO
levels rise again or do not drop below 100 ppm, the
unit will go back into alarm. Refer to your CO alarm
User’s Manual for more information on using the
Silence Feature.

Models FACO and FACOAC

If the unit alarms, and no one is feeling symptoms of
CO poisoning, remove the SensorPack

®

Module and

place it where it will be exposed to fresh air, like on the
inside window sill of an open window. Continue to 
ventilate your home while the sensors clear. 
The sensors should clear in 3-5 hours. Replace the
SensorPack

®

Module in the alarm, making sure you

close the drawer all the way. Test to make sure the CO
alarm and SensorPack

®

Module are working properly.

Removing the SensorPack

®

Module or opening the

drawer will remove your protection. For Models
FACO and FACOAC, always ventilate your home
while the sensors clear.

How To Install a SensorPack

®

Module

1. Cut open the plastic bag and remove the

SensorPack

®

Module.

2. Pull the drawer on the side of the unit open. Insert

the white SensorPack

®

Module in the drawer. The

beveled edge should face in toward unit, label
should face you.

Push the drawer in as far as it will go. Make sure
there is no gap between the unit and the drawer.
The unit may beep a few times after you install the
SensorPack

®

Module.

3. Press the Test/Silence button to make sure the CO

alarm is working properly.

Your Carbon Monoxide Alarm comes with a special
feature that prevents the drawer from closing if a
SensorPack

®

Module is not installed. The CO Alarm

will not work until a SensorPack

®

Module is

installed and the drawer is closed all the way.

Weekly Testing of Your CO Alarm

It is important to test your CO Alarm weekly and after
you replace the SensorPack

®

Module. Push the

Test/Silence (Test/Reset) button on the cover until a
continuous alarm sounds. It should last for 5-20 
seconds. If the unit ever fails to test properly, replace it
immediately.

DO NOT stand close to the unit when the unit is
sounding. Exposure at close range may be harmful
to your hearing. When testing, step away when the
unit starts sounding.

The Test/Silence (Test/Reset) button is the only
proper way to test the unit. NEVER use vehicle
exhaust! Exhaust causes permanent damage and
voids your warranty.

If the unit does not test properly:

1. Make sure the SensorPack

®

Module is inserted 

correctly.

2. Be sure the unit is clean and dust-free.
3. Replace the SensorPack

®

Module and test the unit

again.

If there is still a problem, do not try to fix the CO Alarm
yourself. This voids your warranty. If the unit is not
working properly, refer to the “Limited Warranty” at the
end of this manual, or call our Consumer Affairs
Department at 1-800-323-9005.

What To Do If Your CO Alarm Sounds

Actuation of this device indicates the presence of
CO which can be fatal.
In the Event of an Early Warning: CO alarm sounds
for 3-5 seconds every 5 minutes.

1. Immediately get fresh air into the premises.

2. Operate the Test/Silence (Test/Reset) button.**

3. Turn off and inspect the logical sources of carbon

monoxide, and adjust, repair, or replace as needed.
Call a qualified appliance technician if necessary.

In the Event of a Full Alarm: CO Alarm sounds a
continuous, pulsating alarm.

1. If anyone has a headache or an upset stomach, call

911 or Fire Department and immediately move to a
location with fresh air. DO A HEAD COUNT TO
CHECK THAT ALL PERSONS ARE ACCOUNTED
FOR. DO NOT RE-ENTER THE PREMISES until the
Fire Department says the air is clear. Have the
problem corrected immediately!

If no one exhibits symptoms of discomfort associat-
ed with carbon monoxide poisoning, simply:

2. Operate the Test/Silence (Test/Reset) button.**

3. Turn off appliances, or other sources of combustion

at once (furnace, water heater, wood [coal,
kerosene] burning stove or heater, RV or automobile
in attached garage, etc.).

4. Immediately get fresh air into the premises.

5. Call a qualified appliance technician and have the

problem fixed before restarting appliances.

After the problem has been corrected, you may 
re-enter the area.

**On models with a Silence (Reset) Feature only.

On Models FACO, FACOAC, BRKCO, 
and BRKDCO

1. Remove the SensorPack

®

Module and place it

where it will be exposed to fresh air while you 
ventilate your home. 

2. Once the sensors have reset, reinstall the

SensorPack

®

Module in the unit and close the

drawer all the way. Please refer to the User’s
Manual or call our Consumer Affairs Department, 
1-800-323-9005, for more information.

Limited Warranty

BRK Brands, Inc., ("BRK") the maker of First Alert

®

brand

products, warrants that for a period of one year 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. 

303 Nelson Avenue, Neosho, MO 64850-8806.

Do not install this
SensorPack

®

Module 

if its freshness date 
has expired.

First Alert

®

is a registered trademark of the First Alert Trust.

BRK Electronics

®

and SensorPack

®

are Registered Trademarks

of BRK Brands, Inc.

User’s Manual
Model FCD1R

  SensorPack

®

M O D U L E

Patented chemical

sensor and long-life

battery together in

one replacable unit.

SensorPack

®

Module

Installing the
SensorPack

®

Module

  SensorPack

®

M O D U L E

Patented chemical

sensor and long-life

battery together in
one replacable unit.

DO NOT 

INSTALL

AFTER

[DATE]

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