This is my next trial to have my own homematic motion sensors for switching the lights on when we climbup upstares.

The first versions was working but they performed poorly. The used pir sensors did recognize motion but very late so that most of the time they switched the light on when we are already upstares. 

This version will lack of a light sensor but uses a 12/24V radar sensor which can be connected to either a homematic universal pcb board by some constributor of the homematic AskSin++ project by Jerôme Pech or it can be directly connected to an homematic wired input module.

Unfortunatly the old housings of the sensors didn't  fit any more. So I had to design my own housing for the sensor, too.

I've used some heatinserts to fix the pcb (Asksin Universal) and the sensor in place.

Maybe someone will find it useful.