I made my own solution to circumvent my issue. I'm using an ESP32 to check the state of my kitchen lights using the Home Assistant API.
Based on that state, the ESP32 sends the 433mhz signal to the connected transmitter.
For more details, see https://github.com/SpectraCoder/ESP32_Novy_Commander

Thanks for the suggestion, but I don't think this will work with RFLink unfortunately.

I have a Novy Crystal 26050 cooking hood, and some Zigbee lights. I want the lights of the cooking hood to turn on when the Zigbee lights turn on, and off when they turn off again. The Novy hood responds to 433mhz. I'm able to use an Arduino Uno to send a 433mhz signal I found on the internet to con...