First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup Category_Pigs Premium components and an all

Premium components and an all metal gearcase provide durability that professionals require

Features copper shells machined from solid bar stock (not tubing)

Does not fit new style docking port

Extra Long 20’ Power Cord

First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup Category_Pigs Premium components and an allDesigned to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires. Features Ionization Sensor Reliably Detects Flaming Fires: The First Alert Hardwired Smoke Alarm with Battery Backup comes equipped with an ionization sensor to provide the earliest possible warning of