An in-wall power adapter configured to apply a voltage to a load is described. The in-wall power adapter may comprises a recess adapted to receive a control module; a first connector having a first contact element adapted to receive a first prong of a plug, a second contact element adapted to receive a contact element of a control module, and a third contact element adapted to receive a wire of a junction box; a second connector having a fourth contact element adapted to receive a second prong of a plug, a fifth contact element adapted to receive a contact element of a control module, and a sixth contact element adapted to receive a wire of a junction box; and a third connector having a seventh contact element adapted to receive a third prong of a plug, an eighth contact element adapted to receive a prong a contact element of a control module, and a ninth contact element adapted to receive a wire of a junction box.