Digital display panels 2, toggle switches 20, thumbwheel switches 2, interface connector on front panel, operating power 115 v ac, 3 phase, 400 hz, 2.5 amp, 28 v dc, 10 amp, o/a dim. 18.000 in. Lg, 19.000 in. W, 12.000 in. H, rack mtd, special features internal blower