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Feature

CO detector alerts you to carbon monoxide
Electrochemical CO sensor detects carbon monoxide
Battery-operated design works almost anywhere
Loud 85-decibel alarm sounds when CO levels are elevated
Single test/silence button for simple operation
Battery-operated carbon monoxide alarm
Uses electrochemical carbon monoxide sensor--the most accurate technology available
Simple to use silence/test button, low battery warning, end-of-life timer
1-9V Battery or 2-AA Battery (included) power source.
5 year limited warranty

Description

The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to detect carbon monoxide. The battery-powered design of this personal carbon monoxide detector means your space can be easily monitored for dangerous carbon monoxide gas. Simply insert the included 9-volt battery, and the carbon monoxide detector is ready to go. When CO levels become elevated, a loud 85-decibel alarm alerts you to the threat. Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it is time to replace the device.