I succeeded to control my Zehnder ComfoFan S by using a DOIT ESP32 Devkit V1 and a nrf905. I’ve implemented this project on the ESP32 with Arduino: https://github.com/eelcohn/nRF905-API.
See my project on: https://gathering.tweakers.net/forum/list_message/63938230#63938230
Now I’m able to control the unit using all kind of sensors.
It works like a charm.
I just used a Qubino 0-10V module for this. I was just plugging in and using it 
If you could please keep the conversation in English as much as possible, then more people will be able to participate. If you would rather not or can’t communicate in English then please check out Non-English boards/catregories:
https://community.homey.app/c/non-english
Hi Ruud,
Very good and simple solution. But it’s a very expensive solution (€50,00). I solved this automation issue for just €5,00 and I didn’t need to open the unit.
