- Brand:Â BRK ElectronicsApplication:Â Precision DetectionColor:Â WhiteDimensions:Â 1.9 in 5.6 in 5.6 inSensor:Â Ionization,ElectrochemicalSpecial Features:Â Battery Backup,End-of-Life Warning,Hardwire Interconnectivity,Hardwire Quick Connect Plug Included,Precision DetectionStandard:Â Conforms to UL 217 8th Edition Standard,Conforms to STD UL2034Type:Â Combination Smoke & Carbon Monoxide Alarm