First Alert Smoke & Carbon Monoxide Alarm Hardwire w/ Battery Backup Voice Alert

First Alert Smoke & Carbon Monoxide Alarm Hardwire w/ Battery Backup Voice Alert Keep your family safe with this talking hardwired smoke and carbon monoxide alarm; It's equipped with voice and location, so you are alerted of the danger and where it originates from across your house. Tells you whether the danger is smoke or carbon monoxide and where the threat is among up to 11 preprogrammed locations in your home. Rigorously tested to meet UL standards. Dimensions: 5” x 2” SMOK0388595790465987-03/24 BSMSTK (Shelves) 15 oz