Wireless wall switch mount

I have some radio wall switches. And I found it is not convenient to change batteries, if you mount it on the wall, screws or double-side tape. It is best to operate on the back side, that is mount to the wall :-(
So I designed mount pads for three types of switches I have.

1. All holders have same external size and prints correctly, but internal size is not so eazy, it depends on slicer/printer combination and maybe need to be modified.

2. After all, suddenly, I found switches looks even better in the holder, except third (key + round) case, that is bigger than others, but it's design hides the thickness and looks lighter.

3. About infill. I use 1 mm top/bottom wall in Cura and 0% infill, so it makes solid base and clean walls without visible infill on semi-transparrent PETG.

4. Small square holes in the base are not functional, it is only to understand holder model.