A belt buckle includes a housing having a base, first and second sidewalls projecting from the base so as to form a substantially U-shaped member and a lug member projecting from said base. There is also an electrical switching fastened to the base that has a pair of contact pins. A tongue plate preferably has a base portion and an elongated portion projecting from the base portion. The elongated portion may have a free-end opposite the base portion, a lower planar surface having a recess and mating member mounted at the free end thereof. In an assembled position the tongue plate is inserted in the housing such that the lug engages the recess and the mating member engages the contact pins.