Air Sampling Tube, -, Finish -, - Mounting, Peak Output (dBA) -, Flash (Candela) -, Standby Current (uA) -, Depth (In.) -, Height (In.) -, Length (In.) -, Tube Length (Ft.) 3 1/2 ft, Width (In.) 1/2 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