First Alert Smoke Detector

Brand new and unopened First Alert 0827B Ionization Smoke Alarm with 10-Year Sealed Tamper-Proof Battery , White Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit No Battery Changes for the Life of the Alarm; 3V Lithium Power Cell Included