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