First Alert SA720CE Wireless siren White siren

Photoelectric Smoke Alarm Escape Light - SA720CE -General use smoke alarm for landings and stairways with a powerful light that indicates the escape route through the smoke.
-Advanced photoelectric (optical) technology, with patented ceiling entry smoke system, for faster smoke detection.
-Sliding battery draw with locking pin for safe and easy battery installation and replacement.
-Equipped with test button and “hush” button to stop nuisance alarms.
-Sensory chamber has added benefit of mesh and unique antidust coating to protect against dust and insects.
-30 day low battery warning.
-LED light to indicate power and alarm mode.
-Easy to install with 9V battery (with a minimum of 1 year life) and fittings included.
Loud 85 decibel alarm.