Use this cover to stop your guests switching off your smart lights.

It should fit most U.K. light switches by magnetically attaching to the screws, which are placed 61 mm apart.

You'll need two 6 x 3 mm Neodymium magnets which are easily found on Amazon. The spaces for them on the model are intentionally very tight so as not to require glue to hold the magnet in – the best way to get them in is to wedge them in the hole, then turn the cover over and push it down onto the table.