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slide 1 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 2 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 3 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 4 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 5 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 6 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 7 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
slide 8 of 8, First Alert Battery-Operated Carbon Monoxide Alarm, 2 ct
First Alert

First Alert Battery-Operated Carbon Monoxide Alarm

This First Alert COBATT2 Battery Operated Carbon Monoxide Alarm 2 pack (Model CO400) uses a highly accurate electrochemical sensor to detect dangerous CO levels in your home often caused by issues with furnace, water heater, portable heater or car exhaust. Alarms include loud 85dB audible alarm, low-battery warning and end-of-life timer/alert. Mute button silences any nuisance alarms. Single button also tests alarm functions. Alarms meet UL2034 standards and backed by 5-year limited warranty. Sold in pack of 2 - Model CO400 alarms.