First Alert GCO1CN front view reveals a compact CO and gas alarm for home safety.
First Alert GCO1CN digital display provides quick reads of current and peak levels.
First Alert GCO1CN plugged into outlet enables easy installation in any room.
First Alert GCO1CN backup battery keeps monitoring during outages.
First Alert GCO1CN test and silence button supports quick checks.

First Alert

FIRST ALERT GCO1CN: Combination CO and Gas Alarm with Backlit Digital Display

High-performance tools and home improvement made for confident daily results

$70.74

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Why customers choose TaskHolt Tools

Overview

The FIRST ALERT GCO1CN combines carbon monoxide and explosive gas protection in a single, easy to install unit. It uses an electrochemical CO sensor for accurate detection and also monitors for common fuels such as propane and methane or natural gas. A backlit digital display provides clear readings, while a loud 85 dB horn offers timely alerts.

Designed for simple setup, this plug-in alarm powers from a standard outlet and includes a backup 9-volt battery to maintain monitoring during power interruptions. The unit also features a test and silence button to quickly verify operation and mute non-threatening alarms.

Key features

  • Electrochemical CO sensor delivers accurate carbon monoxide detection
  • Detects propane and methane/natural gas in addition to CO
  • Backlit digital display shows current and peak gas levels at a glance
  • Plug-in design for easy setup with a reliable power backup from the included battery
  • 85-decibel alarm is designed to be heard across typical living spaces
  • Test/silence button for quick checks and nuisance alarm control
  • UL listed for safety and quality assurance

Real-world use and placement tips

Place the detector in areas where fuel-burning appliances are used or where gas lines and vents could impact air quality. It’s suitable for kitchens, utility rooms, basements, and hallways near sleeping areas. The backlit display is handy at night, and the battery backup adds peace of mind during outages.

  • Install near furnaces, water heaters, and gas stoves to catch gas leaks early
  • Position away from direct vents or cooking flames to reduce nuisance alarms
  • Test regularly and replace the battery before it signals a low power state

What’s in the box

One combination carbon monoxide and explosive gas alarm, one 9-volt battery, and user’s manual.

FAQ

Q: What gases does the First Alert GCO1CN detect?

A: It detects carbon monoxide and common explosive gases like propane and methane/natural gas, with an 85 dB alarm and backlit display.

Q: How is the unit powered and installed?

A: It plugs into a standard AC outlet and includes a 9-volt battery backup for outages; use the test/silence button to verify function.

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