Remote Test Station, 3 LED, Keyed, Finish -, Single Gang Box Mounting, Peak Output (dBA) -, Flash (Candela) -, Standby Current (uA) -, Depth (In.) 2 in, Height (In.) 3 in, Length (In.) 2 in, Width (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 -, Standards -, Includes -, For Use With Mfr. No. SD-4WJ