Smoke Alarm

First Alert 1039855 Smoke Alarm, 9 V, Ionization Sensor, 85 dB, Alarm: Audible, WhiteThe First Alert P1210E 10 years battery photoelectric smoke alarm, slim profile with escape light helps protect your home by providing up to a decade of uninterrupted monitoring. This low-profile smoke alarm uses an ultra-reliable photoelectric sensor to detect smoke from slow-burning, smoldering fires. Half as thick as a standard alarm, this detector has a slim, contemporary design that mounts unobtrusively on a wall or ceiling. A built-in 10 years lithium-ion battery provides continuous power, with no need to ever worry about changing the battery over the lifetime of the smoke detector.Features: The First Alert P1210E alarm comes equipped with a photoelectric sensor to provide the earliest possible warning of fire The sensor is optimized to detect larger smoke particles produced by smoldering fires, such as those caused by unextinguished cigarettes Distinguishes between real threats and smoke/vapor