• Power Sources:
• Plug in
• 9 volt battery backup
• Sensor Type: Electrochemical
• Dimensions: 5.6 in L x 3.1 in W x 1.8 in H
• Meets all UL Standards
• Warranty: 5-Year Limited
• First Alert GCO1

• Plugs into any AC outlet for easy setup; backup battery powers detector in case of power outage
• Loud 85-decibel alarm can be heard easily
• Versatile alarm senses high levels of propane, natural/methane gas, and carbon monoxide
• Easy to read backlit digital display allows you to view current and peak levels

Detects Dangerous Levels of CO and Explosive Gases

Designed to promote peace of mind and household safety, the GCO1 Combination Explosive Gas and Carbon Monoxide Alarm with battery backup detects the presence of methane and propane. The GCO1 Combo Explosive Gas and Carbon Monoxide Alarm also features an electrochemical CO sensor that detects carbon monoxide. When the detector detects a threat, it alerts you with a loud 85-decibel alarm.

Backlit Display for Reviewing Readings

Equipped with a backlit digital display, the GCO1 Combo Explosive Gas and Carbon Monoxide Alarm allows you to monitor CO and explosive gas levels in your home. The digital display gives you an easy and clear readout of current and peak levels, allowing you to discern patterns that indicate potential CO, methane and propane leaks from an appliance, a generator, or other sources.

Plugs into Any AC Outlet for Effortless Setup

The GCO1 Combo Explosive Gas and Carbon Monoxide Alarm is easy to set up and does not require any wiring. The compact detector plugs into any standard AC wall outlet without obstructing other sockets and comes with a line cord for versatile placement options. The alarm also features a 9-volt backup battery to help ensure continued protection in the event of a power outage. A pivoting, easy-to-access battery drawer allows you to replace the battery without dismounting the carbon monoxide and explosive gas alarm.