Zehnder WTW Q serie

[Marchel]

Because there is no topic Ventilation I ask my question here.
In which way would I best get the data from our Zehnder to domoticz and with which peripherals?
Zehnder Q-350
Available peripherals are:

https://www.zehnder.nl/producten-en-sys ... nect-lan-c
https://www.zehnder.nl/producten-en-sys ... nect-knx-c

I have no KNX experience.
I do have some knowledge of Domoticz running on a Raspberry.
Who can help me get started with this project?

Is there perhaps a cheaper way to read the data?
I find the Zehnder modems quite expensive