First Alert GCO1 (1039758) Plug-in Combination Explosive Gas and Carbon Monoxide Alarm with Battery Backup

\\n3-Way protection, 3 threats sensed in 1 Alarm: carbon monoxide, propane gas and natural/methane gas\nPlug & Protect, alarm plugs into any standard 120V AC outlet. Line cord allows for high mounting to sense methane, low mounting for propane\nEz view backlit digital display, easy viewing of danger levels, current, and peak CO levels in your home\nBattery backup, provides consistent protection for added safety during power outages\nMute button silences unnecessary alarms immediately. It also tests alarm functions with same button\n› See more product details\