94 lbs First Alert 5024747 Plug-In with Battery Back-up Electrochemical Carbon Monoxide Detector.We provide high-quality modern products to be enjoyed by many clients. SpecificationsCountry of Origin: MexicoPower Type: Plug-In w/Battery Back-upSensor Type: ElectrochemicalProduct Type: Carbon Monoxide DetectorBatteries Included: YesTest and or Reset Button: YesBattery Size: 9-voltWeight: 0.