BELKIN WEMO SWITCH

Turning gadgets on and off remotely can make you feel like Gandalf – and they don’t need to be Alexa-compatible. The Wemo Switch lets you use your phone to control the mains power to your chosen device. It’ll work with anything that plugs into a standard wall socket, and you can set timers using the app. Time it right and you’ll look like Gandalf too (beard not included). £40 / belkin.com

Remote control The Switch can be operated via internet, whether it’s Wi-fi, 3G or 4G.