A multimode switch includes a wireless transceiver, that transmits/receives messages over a wireless network; a line voltage switch, coupled to a line voltage and associated devices; a switch controller, responsive to first messages received over the wireless network, that directs the line voltage switch to provide line voltage to, and subsequently remove line voltage from, the associated devices, and that receives identifying information and functional group designation for the associated devices in second messages over the wireless network, and that controls the associated devices according to the identifying information and functional group designation via transmission of third messages over the wireless network; and a ground leakage power supply, coupled to an AC hot line and to an earth ground, that generates a regulated voltage to power the wireless transceiver and the switch controller without requiring connection to an AC neutral line, while limiting ground leakage current to the earth ground to a prescribed leakage value.