What does the plug-in power supply to the device look like? Can the other two sockets still be used with a standard Swiss 3-way socket (recessed version)?
The small plug-in power supply unit supplied partially covers the other two recessed (as if for kitchen and danger of getting wet!) 230V outlets of the Swiss 3-way socket. I was able to solve the problem with an angled spacer (I would have liked to post a photo here for you to explain). nikolinz, 20.10.25