This is maybe a crazy idea. Using 2way-radios, a DSTAR Hotspot (DVMEGA) and a mpower device from Ubiquiti. I can switch ON & Switch OFF lights. The radio can send commands to the hotspot and then, the hotspot run a script…
New GMSK DV node adapter for analog radios from DVMEGA: http://www.dvmega.auria.nl/GMSK_shield.html