Thanks a lot, it works.
I created a json file called “devcap1.schema.json” in the devices path and put the contents @Smanar wrote:
/home/[USERNAME]/.local/share/dresden-elektronik/deCONZ/devices
After that I restarted Phoscon (I guess reboot would do the same).
Now the controll of the switches work like expected. It was not necessary to reconfigure any control or pairing on the Phoscon App.
@Mimiix I am afraid to say that I have no Github account but it would be great to put this device configuration to the main app.