Shelly Wall Socket can fit into existing EU wall boxes due to its compact dimensions and simple wiring.

When combined with the Shelly Wall Switch system, your home will have a beautiful, unified interior design, with same style of smart wall switches and sockets. 

It's a European (German) standard socket component.

Please note that:

- this product does not include any Shelly smart relays or other smart component,

- Shelly wall switches and frames are sold separately. 

If you wish to combine this socket with a Shelly smart relay behind, you may need a wall junction box with extended installation depth.