First Alert CO400 Battery Powered Carbon Monoxide Detector

The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to monitor your space for a carbon monoxide threat. The

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First Alert CO400 Basic Battery Operated Carbon Monoxide Alarm

First Alert CO400B Basic Battery Operated Carbon Monoxide Alarm: Carbon Monoxide & Smoke Detectors (029054000743-1)

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FIRST ALERT Carbon Monoxide Detector, No Outlet Required, Battery Operated, CO400, White, 2 Count (Pack of 1) - Carbon Monoxide Detectors