First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 3-Pack

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Keep your family safe with this 3 pack of hardwired smoke alarms; the battery backup means constant monitoring, even if there's a power failure.Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm.To ensure complete protection make sure to place one on each level of your home and in each bedroom.Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected.Simple to use, with a single test/silence button, and side load battery compartment; Tamper resistant locking brackets and universal mounting brackets make installation easy.Rigorously tested to meet UL standards.Faster turnarounds on job sites with the easy to install, most trusted alarms in home safety.First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)



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