First Alert SM210, 10-Year Sealed Battery Smoke Alarm with Slim Profile Design,
Model SM210. Features Photoelectric Smoke Sensor. Power 10-Year Sealed Battery. Power Source Battery. Battery Included Yes. Manufacturer Warranty 10 Years. Number of Batteries 1. Unit Type Unit.
First Alert 10-Year Battery Photoelectric Smoke Alarm With Slim Profile 2-Pack
Sensor Type: Photoelectric. The First Alert SM210 is a slim-profile smoke alarm with a 10-year lifespan sealed battery. Slim Profile Design: Half the depth of a standard alarm that blends seamlessly into walls or ceilings.