First Alert First Alert Wireless Smoke and Carbon Monoxide Detector with Voice and Location

Carbon Monoxide/Smoke Detector will Sound All ONELink Alarms and Tell you of the Danger: Battery-operated smoke and carbon monoxide alarm can be installed anywhere; Connects multiple alarms together for wireless safety network; Voice alarm gives clear indication of where the problem is located; Features photoelectric smoke sensor and electrochemical CO sensor; One button silences a false alarm and tests the unit