The First Alert® GCO1 Combination Explosive Gas and Carbon Monoxide Alarm with battery backup features a backlit digital display and detects propane, CO, and methane gas. This explosive gas and CO detector plugs into any standard AC outlet with no additional mounting hardware needed.
Plugs into any standard AC outlet for easy setup; backup battery powers detector in case of power outage
Loud 85-decibel alarm can be heard easily
Detects high levels of propane, natural/methane gas, and carbon monoxide
Easy to read backlit digital display allows you to view current and peak levels