First Alert CO400 Basic Battery Operated Carbon Monoxide Alarm

First Alert Carbon Monoxide Alarm CO400 for the home, battery operated carbon monoxide alarm, mute button to silence nuisance alarms, utilizes electrochemical sensor for increased accuracy.

The battery-powered design doesn't require an electrician; simply insert the included 9-volt battery into each alarm, and the carbon monoxide detectors are ready to go.

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