I have a Zehnder Paul Focus 200 ventilation system (Paul Focus 200 | Zehnder Group Sales International) and I would like to integrate it to home assistant. Currently the device is not connected to internet and thus not controllable by mobile device (only by TFT display which came with the unit). The device has an internal RS485 bus which communicates through the attached adapter. Did anybody have a similar situation and successfully integrated to HA?
