How, however, reaches the two rotary switches in the transmitter for producing the compatibility of all the devices, I found out first on the homepage of InterTechno: Not the four small screws on the back solve (such possibly Battriewechsel), but simply the button on the front abklippen with a screwdriver! Here a corr. Note in the print supplement to the wall transmitter would have spared unnecessary effort.
That being said, however - great product!
