UK wall switch options (photos included)

[hijinx (James)]

I think a Sonoff basic will fit in a UK backbox if you trim the casing a bit.
For sure its a tight squeeze, but pretty sure it will work… in fact I’m banking on it for my project:

Analogue style rotary dimmer switch - Sonoff + ESPEasy + MQTT

I’ve been working slowly on a project over the past few weeks to create a smart dimmer switch that mimics a standard UK style analogue dimmer switch. I have many analogue dimmers around my house but of course these wont dim a smart bulb such as Hue. There are loads of advantages of smart bulbs that I want to take advantage of, but also want to keep the same experience as with traditional lighting controls - e.g. for children, guests etc. I select a Sonoff basic as the basis for the project as…

See the final photo - you can see the sonoff basic PCB fit with some mm to spare.
My trimmed sonoff case that you can see in the video is 2-3mm bigger than the pcb.
So

Edit - actually comparing images I think maybe I benefited from the fact my backbox is 5+ mm deeper than the wall fact due to plaster thickness… mind you the switch plate gives a bit of additional leeway too as it probably 5mm proud of the wall.