First Alert 1039809 Hardwired Ionization Smoke Alarm with Battery Backup BESTSELLERS Running Motor HP: 1

Running Motor HP: 1

(300) 75 pound 8" natural with "d" lock

p H Range: 11

A thick backing plate resists damage and helps increase the lifespan

UL listed for gasoline

First Alert 1039809 Hardwired Ionization Smoke Alarm with Battery Backup BESTSELLERS Running Motor HP: 1Designed to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide a vital early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires. Comes equipped with an ultra reliable ionization sensor to provide the earliest possible warning of a fast flaming fire. The sensor is optimized to detect flaming fires, such as those caused by