Matt Hawkins, over at Raspberry Pi Spy, has been looking at the Energenie range of products and, more specifically, at a set of two sockets and control board that he bought. The control board, called the Pi-mote, is a GPIO plug-in board that is compatible with all models of Raspberry Pi. Matt goes through installation of the software, pairing with the sockets and all the options available to you when programming the Pi-mote, including the GPIO Zero method that I favour. Take a look here at Matt’s extensive write-up.