Brand Name: First Alert *Power Type: Hard-Wired with Battery Back-up *Sensor Type: Ionization/Electrochemical *Product Type: Smoke and Carbon Monoxide Alarm *Detects Smoke: Yes *Indoor and Outdoor: Indoor *Packaging Type: Boxed *UL Listed:Yes *Number in Package: 1 pk *Detects Carbon Monoxide: Yes *CSA Listed: No *Color Family: White *ETL Listed: Yes *Test and or Reset Button: Yes *Volts: 120 volts *Side load battery drawer* Tamper resistant locking pins* Universal mounting bracket* Latching alarm indication* Restricted in the State of MA *Discovery ACC, CON, NBR, SUP, EXP