A wall plate connector system includes a wall plate terminal block extending from a wall plate base. The wall plate terminal block includes a terminal block body having a front, a rear, a first end and a second end. The terminal block body has contact channels and wire channels open to corresponding contact channels to receive electrical wires during a poke-in termination. Terminal contacts are received in corresponding contact channels and each include a poke-in spring beam and a header beam. A header assembly is removably coupled to the wall plate terminal block and includes header contacts configured to be terminated to a control circuit board. Each header contact has a mating beam. At least one of the mating beam and the header beam is a resiliently deflected spring beam configured for repeated mating and unmating at separable mating interfaces.