Summary

https://youtu.be/L55ZjNbrDKA

At first: electricity is no game. So don`t play around with this. Please check at first if such a part can legally be installed in your country. Otherwise dont use this!!!

This is a housing for sonoff touch devices. It is designed in a way, that you only drill holes in the wall where the original light switches cover them when ever you want to uninstall it again. Because of this, the holes are in a bad position for screwing and you might need to drill them at an angle. Of course a different solution would be better here, for example with a snap in that you screw in earlier, but it was quickly designed and feel free to remix it to solve this issue.
The socket of the Company "Jung" fits exactly into this design, compared to the video, these sockets are available in clear white aswell.

edit: I just added 2 covers to use, if you want to insert Jung switches as trigger for a standard Sonoff instead of sonoff touch. Pictures to that will be updated later.

Have fun!