Chime Strobe, -, Finish Red, Flush or Surface Mounting, Alarm Current 0.277, Peak Output (dBA) 78.6 dBA, Flash (Candela) 15/30/75/110 cd, Standby Current (uA) -, Depth (In.) 7/8 in, Height (In.) 4 1/2 in, Length (In.) 4 1/2 in, Width (In.) 2 3/4 in, Duct Opening -, Duct Width (Ft.) -, Coverage (Square-Ft.) -, Alarm Aux. Contact @ 250V -, Alarm Aux. Contact @ 30VDC -, Alarm State (mA) -, Humidity Range ( Percent RH) -, Number Required -, Standby State (mA) -, Voltage 24V DC, FWR