The Shelly Plus i4 can connect to other Shelly sensors or relays for complete simultaneous control, and it's small enough to fit behind any 4-input switch like the Shelly Wall Switch for Smart Relays to trigger up to four different, completely customised, scenarios in your home without any expansions of the wall space or changes in wiring required. Also included is multi-click support, meaning that the Shelly Plus i4 can run up to 12 synchronised scenes or actions with the single touch of a button. This device eatures a wide range of voltage support, and is compatible with 110-240V AC powering.