First Alert 9120LBL Smoke Alarm, Ionization Sensor, 85 dB, White

The first ALERT 9120LBL hardwired interconnected smoke alarm with lithium battery backup is a great choice when it comes to affordable smoke alarms. In the event of a power outage, this smoke alarm is equipped with a 10 year lithium battery backup.
Unit: EA
UPC: 029054015365
Model Number: 9120LBL