input voltage 24v dc, 20v dc , 32v dc max, with internal dpdt 10 amp, 120v ac, 60 hz resistive contact rating relay, knob adjustable time delay on operate, time delay 1.0 to 10.0 sec minus 40 to plus 55 deg c operating temp, 60 milliseconds recycle time, with polarity protection, release time 45 milliseconds, o/a dim. 2.375 in. lg, 1.750 in. w, 4.122 in. h, pintype terminals, plug in mtg