A wall plate connector system comprising: a wall plate base configured to be mounted to a wall having electrical wires associated with the wall; a wall plate terminal block extending from the wall plate base, the wall plate terminal block includes a terminal block body having a front, a rear, a first end between the front and the rear and a second end between the front and the rear generally opposite the first end, the terminal block body having contact channels and wire channels open to corresponding contact channels, the wire channels being open at the front to receive a corresponding one of the electrical wires during a poke-in termination; terminal contacts received in corresponding contact channels and held by the housing, each terminal contact comprising a poke-in spring beam configured to engage the electrical wire when poked-in to the corresponding wire channel, each terminal contact comprising a header beam remote from the poke-in spring beam, the header beam having a separable mating interface; and a header assembly removably coupled to the wall plate terminal block, the header assembly configured to be mounted to a control circuit board controlling the wall plate connector system, the header assembly having a header contact configured to be terminated to the control circuit board, each header contact having a mating beam, the mating beam having a separable mating interface mated to the separable mating interface of the header beam of the corresponding terminal contact, wherein at least one of the mating beam and the header beam is a resiliently deflected spring beam configured for repeated mating and unmating at the separable mating interfaces. a wall plate base configured to be mounted to a wall having electrical wires associated with the wall; a wall plate terminal block extending from the wall plate base, the wall plate terminal block includes a terminal block body having a front, a rear, a first end between the front and the rear and a second end between the front and the rear generally opposite the first end, the terminal block body having contact channels and wire channels open to corresponding contact channels, the wire channels being open at the front to receive a corresponding one of the electrical wires during a poke-in termination; terminal contacts received in corresponding contact channels and held by the housing, each terminal contact comprising a poke-in spring beam configured to engage the electrical wire when poked-in to the corresponding wire channel, each terminal contact comprising a header beam remote from the poke-in spring beam, the header beam having a separable mating interface; and a header assembly removably coupled to the wall plate terminal block, the header assembly configured to be mounted to a control circuit board controlling the wall plate connector system, the header assembly having a header contact configured to be terminated to the control circuit board, each header contact having a mating beam, the mating beam having a separable mating interface mated to the separable mating interface of the header beam of the corresponding terminal contact, wherein at least one of the mating beam and the header beam is a resiliently deflected spring beam configured for repeated mating and unmating at the separable mating interfaces.