First Alert 1039939 Hardwired Smoke Alarm with with 10-Year Battery Backup SummerEndSale Extra support ribs on back

Extra support ribs on back of blade provide added strength and stiffness

Designed primarily for wood and wood products

extension tube for hard to reach areas

Built in dial gauge

Press vacuum/seal button to start vacuum sealing

First Alert 1039939 Hardwired Smoke Alarm with with 10-Year Battery Backup SummerEndSale Extra support ribs on backEnhance your household's fire safety and enjoy greater peace of mind with the First Alert hardwired smoke alarm with 10 year battery backup. Equipped with an ionization sensor, this 120 Volt hardwired smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 dB alarm. Included adapter plugs eliminate the need for re wiring during installation, while a backup battery helps keep the unit running in case of a power outage.