Multi Signaling Unit, -, Finish White, Single Gang Box Mounting, Alarm Current 55mA, Peak Output (dBA) 85, Flash (Candela) -, Standby Current (uA) -, Depth (In.) 1 1/2 in, Height (In.) 5 1/4 in, Length (In.) -, Width (In.) 4 3/4 in, Duct Opening -, Duct Width (Ft.) -, Ambient Temp. Limits (F) 14 to 140, Coverage (Square-Ft.) -, Alarm Aux. Contact @ 250V -, Alarm Aux. Contact @ 30VDC -, Alarm State (mA) -, Humidity Range ( Percent RH) 0 to 95, Number Required 1, Standby State (mA) -