Long time since I've been here so I might have missed something, sorry for that.
I'm figuring out a way to evade the use of the CR123A batteries since they are quite expensive and have the flaws off being empty ;) And the use of batteries at all being not that environmentally friendly.
The Idea I have is this:
In my (new) home, I'm going to have a Fibaro Motionsensor in every room corner.
In this corner, about 30 cm above the floor, I have