Backbox Spacer for Sonoff UK T1

This is a backbox spacer for the UK version of the Sonoff T1 [1]. Due to the current recessed backbox in the wall not being deep enough to accommodate the Sonoff unit a spacer was required.

The spacer increases the depth of the backbox by 20 mm. In addition there is a 2 mm lip to surround the Sonoff face plate.

[1] - https://sonoff.itead.cc/en/products/residential/sonoff-t1