First Alert® SC9120B Smoke/Carbon Monoxide Alarm w/Battery Backup, 120V CyberMonday Maintains stiffness & control

Maintains stiffness & control

Multi-use single strand wire

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Used in small to average sized homes and commercial buildings

First Alert® SC9120B Smoke/Carbon Monoxide Alarm w/Battery Backup, 120V CyberMonday Maintains stiffness & controlThe First Alert Hardwire Combination Smoke Carbon Monoxide Alarm wires directly into your home's electrical system. In the event of a power outage, this alarm has been equipped with a 9V battery backup to provide optimal protection. The realization of ionization technology combined with an electrochemical sensor ensure optimal safety. A Mute Button has been included to serve the dual purpose of silencing nuisance alarms brought on by cooking smoke and