The 1 button switch comes with attachable relay holders. Shelly Wall Switch for Smart Relays can fit into any existing wall switch console or even the tiniest spaces, due to its compact dimensions and simple wiring. Relay holder 1 - Shelly 1 / Shelly 1PM Relay holder 2 - Shelly Plus 1 / Shelly Plus 1PM Relay holder 3 - Shelly 1L / Shelly Dimmer 2
2 button Shelly Wall Switch for Smart Relays This 2 button switch comes with attachable relay holders. Shelly Wall Switch for Smart Relays can fit into any existing wall switch console or even the tiniest spaces, due to its compact dimensions and simple wiring.
This 4-button switch comes with a snap-on holder for Shelly Plus series modules but has been specifically designed with a focus on compatibility with the Shelly i4/i4 DC. Other modules can also be used with this switch, such as two Shelly 2.5, but the holder for that model is not included.