This works with Merten EU sockets and should also work with Busch Jäger. I used two existing models to get me started (see linked model for the remix source). We have the USB type sockets but with a USB power brick the normal sockets should work aswell.
The camera mount is angled 60 degrees down and 10 degrees to the left.
You'll need plenty of support behind the cover since it is not flat at the bottom - since this part will be facing the wall, the ugly side will be hidden.
The author remixed this model.