3.281" overall length 2.218" overall width elec rating 28 vdc max rated voltage, 10amp resistive current at max rated voltage; motor 115 vac, 60 hz; 2 terminals for motor/3 for contacts; rated operating time 240 sec (adjustable) , 0.20 sec release time, w/o progress indicator; four holes on 2.812 x 1.750 in. mtg ctrs