Wireless AC Powered Smoke Alarm, White

Kidde 1279-9999 Hardwire Interconnectable Smoke Alarm With Battery Backup, 85 DB At 10 FT Loud, 120 VAC Operating, 40 - 100 DEG F Operating, Environmental Conditions: Up To 85 PCT Relative Humidity (RH), Ionization Sensor, Dimensions: 5-3/4 IN Diameter X 1-1/4 IN Depth, LED Display, Mounting: Wall Or Ceiling, Included: 9 V Battery, Sensitivity: 0.6 Plus/Minus 0.1 PCT/FT, UL 217, NFPA 72, The State Of California Fire Marshall, NFPA 101 (One And Two Family Dwellings) Federal Housing Authority (FHA), Housing And Urban Development (HUD)