Thietronik Window-Sensor-Fixation

I builded this part to fix the Thietronik Alarmsystem windowsensor with screws at the window frame.
the glued original fixation wasn't the best solution in my case.
Therefore I was looking for a fixation with screws in the aluminium window frame of my Hymer Campervan.

I chose a semiflex filament - but it also works fine with ABS (should be UV resistant)