An in-wall power adapter configured to control the application of power to a load is described. The in-wall power adapter may comprise a first plurality of contact elements accessible on at least one outer surface of the in-wall power adapter, the first plurality of contact elements comprising a first contact element configured to receive a power signal and a second contact element configured to receive a neutral signal; an outlet configured to receive the power signal and the neutral signal; and a recess for receiving a control attachment; wherein the recess comprises a second plurality of contact elements configured to provide the power signal and the neutral signal to the control attachment.