Yes, those ridiculous Brink prices is what made me make my own device in the first place. 275 EUR (discount price) for a second RF remote control!

Thank you Alois, impressive! However, I am starting to get the feeling that my solution has had an excellent time-benefit ratio Are there specific functions other than setting ventilation level and filter indicator that you are using on a daily basis?

here is another solution for brink units: I have a wemos d1 with a dht22 in bathroom. it measures on 5 minutes basis the humidity and does a GET request to a raspberry. this raspberry has a ebus connection to the brink unit and sets via ebusd the fan speed of stand 1 dynamically between 50m³/h and ...

Thank you for the inspiration sincze! I have made my own iteration based on yours for a Brink renovent 300/400 excellent, ESP8266 and home assistant integration. I will post some snippets, mainly because the color coding was somewhat confusing as many wires have different colors than yours. I used a...