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

• Summary

  The First Alert 9120B is a hardwired smoke alarm with battery backup, designed to provide reliable fire detection even during power outages. It features an ionization sensor, which is effective at detecting fast-flaming fires. The unit can be interconnected with up to 12 other compatible alarms, allowing all alarms to sound if one detects smoke. The 9120B includes a side battery drawer for easy replacement and a silence button to quickly mute false alarms. It's ideal for homeowners seeking enhanced fire safety in their homes.

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