First Alert BRK 3120B Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup, Dual Sensing Smoke Alarm, 1-Pack

The front cover design of the alarm may vary but product function remains the same. The First Alert Hardwired Dual Sensor Photoelectric and Ionization Smoke Alarm with Battery Backup is designed to help provide peace of mind. This dual sensor, photoelectric and ionization alarm alerts you to both smoldering and fast-flaming fires in the event of a home fire emergency. Hardwire alarm includes battery backup for protection during power outages. Two latching features help indicate a low battery or the originating alarm in a system. A single test button makes alarm easy to test regularly.