First Alert 2-Pack Battery-Operated Carbon Monoxide Detector in

Includes plug-in operated carbon monoxide alarm and 10yr sealed photoelectric battery-operated smoke alarm. Modern, compact CO detector design with no installation required, electrochemical sensor. Smoke alarm uses photoelectric smoke sensing technology. Simple to use silence/test button, low battery warning, end-of-life timer, 85 decibel alarm.

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First Alert BRK 10-Year Battery 6-Pack Battery-operated Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at

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