I have a few of these old school light switches in my current accommodation:
I now need to replace one because it is not working anymore so I'm trying to uninstall it from the wall. Alas, I'm not having any success. The visible screws give access to the wiring inside but not too the wall fasteners.
The threaded bars do not have a head I can use to unscrew them. There seems to be a nut buried here
But I cannot access it as there's little space available. I can fit a 5mm hex socket in the hole but the nut is bigger than 5mm.
Do I need a special tool for the job? How can I uninstall this old school light switch from the wall?