
 
 
 
brkelectronics.com
ARCHITECTURAL AND ENGINEERING SPEC 
INSTALLATION OF ALARM
The explosive gas/CO combination alarm shall be a First Alert Model GCO1 and shall 
provide at a minimum the following features and functions:
1. An electrochemical CO sensor and a metal oxide explosive gas sensor.
2. The unit shall have a digital display with peak CO memory feature
3. The unit shall be capable of self restoring and provide an end of life timer.
4. 120V AC powered with a 9V alkaline battery backup and a solid state piezo horn
 rated at 85dB at 10 ft.
5. A visual green LED power-on indicator to confirm unit is receiving power. A visual 
 red indicator to show unit is alarm.
6. A full function test button should check all alarm functions by simulating an 
 explosive gas and CO condition, causing the unit to alarm.
 7. Two Silence features - Low Battery Silence: Silence low battery chirp for up to 8 
 hours. Alarm Silence: Temporarily silence unwanted nuisance alarms.
8. An infrared remote (IR) feature to test and/or silence the alarm with most  
 standard IR remote controls.
9. The unit shall be capable of operating between 40°F (4°C) and
 100°F (38°C) and relative humidity between 10% and 95%.
10. The unit shall contain mounting hardware and shall be listed for wall
 mounting.
11. The unit shall at a minimum meet the requirements of UL1484, UL2034, NFPA 
 720, ICC.
Installation of this alarm must conform to NFPA 720. Always check your local building 
codes. Follow all instructions for placement as outlined in the user’s manual.
SHIPPING SPECS:
TECHNICAL SPECS
Individual Carton Dimensions  5.813 ”L x 2.938”W x 3.438”H
 Weight  0.69lbs.
 Cube  0.034 ft3
 UPC  0 29054 00045 3
Master Carton Dimensions  9.125”L x 7.125”W x 6.313”H
Master Pack 6 
 Weight  4.35lbs.
 Cube  0.238 ft3
 UPC  600 29054 00045 5
Pallet Information 
 Cases per Layer 27 
 Number of Layers 7
 Cases per Pallet  189
 Units per Pallet  1,134
 Cube 55.2 ft3
 Weight 887 lbs.
©2009 BRK Brands, Inc. a Jarden Corporation 
Company (NYSE: JAH)
3901 Liberty Street Road
Aurora, IL 60504-8122
All rights reserved
First Alert is a registered trademark of the First Alert Trust
BRK is a registered trademark of BRK Brands, Inc.
CM2914
THE PARTS OF THIS GAS/CO ALARM
 1. Test/Silence button & 
 remote control sensor
 2. Power Light (GREEN)
 3. Display
 4. Alarm Horn (behind cover)
 5. Display Button: Press to 
  recall highest CO level 
  recorded.
 6. 9V Battery compartment
3.1"
TOP VIEW SIDE VIEW BACK VIEW
2.5"
 
 
 
Alarm Dimensions:  3.1”H x 5.7"L x 2.5"D
Weight:  9.6 oz.
Operating Voltage:  120V AC with 9V Alkaline Battery Backup
Temperature Range:  40F (4C) to 100F (38C)
Humidity Range: 10% to 95% relative humidity (RH)
Audio Alarm: 85dB at 10 feet
Test/Silence: Electronically simulates both explosive gas and CO  
 conditions, causing the unit to alarm or temporarily  
 silence the alarm 
 Remote: Use vol/chn buttons on most household IR remotes.
 Manual: Press and hold test/silence button
Alarm Reset: Automatic when explosive gas and/or CO clears
CO Sensor: Electrochemical
Gas Sensor: Thick film metal oxide
Indicator Lights/Sounds:
 AC Power: Constant green light
 DC Power: Intermittent green Light
 Gas Alarm: Audio Alarm (continuous beeps), rapidly flashing red light 
 CO Alarm: Audio Alarm (4 beeps, pause, 4 beeps), rapidly 
 flashing red light
 Digital Display: Displays hazard (Gas or CO), battery level or CO levels in 
 parts per million (PPM)
Listing: ETL to UL1484 and 2034 Standards
CAT.GCO1B
CO
5.7"
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