First Alert Wall Mounted Carbon Monoxide Detector

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The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to detect carbon monoxide. This carbon monoxide detector is battery operated, making it portable and easy to use, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85-decibel alarm alerts you to the threat.

First Alert Battery Powered Carbon Monoxide Alarm

The FIRST ALERT CO400 carbon monoxide alarm utilizes a electrochemical carbon monoxide sensor that lasts for up to 5 years to detect carbon monoxide.

FIRST ALERT CO400 Carbon Monoxide Alarm, 10 ft, 85 dB, Alarm: Audible, Electrochemical Sensor, Wall Mounting

Close-up of a wall-mounted First Alert carbon monoxide alarm

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The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to detect carbon monoxide. This carbon monoxide detector is battery operated, making it portable and easy to use, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85-decibel alarm alerts you to the threat.

First Alert Battery Powered Carbon Monoxide Alarm