Simple switch for the use of Shelly relays in flush-mounted boxes. The Shelly Wall Switch 1 has been specifically designed by Shelly for the operation of Shelly smart home relays in flush-mounted boxes. It comes with brackets for various Shelly relays that can be directly mounted on the switch. With a maximum depth of just 33 mm (depending on the Shelly relay used), it is particularly suitable for shallow flush-mounted boxes (in older buildings). Additionally, for the first time, it also allows for the installation of Shelly relays in surface-mounted boxes, which are also available in the shop.