Hi Martin, did you get it working?
I have a similar problem using FMS61NP and FT55.
The only thing I get working ist, that when I press a button on the FT55 it change the status of my RockerSwitch.
But I can’t update it from the RockerSwitch. I tried also a Classic Device and an Actuator (EPP A5-38). But nothing worked.
Can you share your definitions?
Many Thanks!
