This option was updated. Actually not as I would expect, but it actually works. It would be really great if someone can help author also to communicate through UART, not just read data
I have my diesel heater on/off working with home assistant by using a sonoff 433 rf bridge, which is enough for me and exactly what I needed just basic functionality of turning it on and off.
The Sonoff RF Bridge copies the remote control signal of the heater.
And in HA I use the integration SonoffLAN and the remote buttons are entities, so I can turn the heater on and off.