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.

Battery-operated carbon monoxide alarm with backlit digital display. Uses an electrochemical carbon monoxide sensor, the most accurate CO detection technology available, to detect the CO you can't see, smell, or taste in the air. An easy-to-read backlit digital display allows a quick view current and peak CO levels. Powered by two replaceable AA batteries, offering peace of mind even during power outages. Battery life varies according to use and application.

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Works during power outages. No installation required. Place or mount almost anywhere. Mute/test button to quiet unnecessary alarms, test alarm function. 85 dB alarm, low battery warning. Low battery mute quiets low battery signal for up to 8 hrs. Front-open compartment allows battery change without taking alarm down. Electrochemical sensor is the most accurate technology available for detecting carbon monoxide. End of life timer alarm chirps when it is time to replace the alarm.

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