I followed your instructions and it solved the problem.
Thanks Hans

thank you I am going to follow your advise.

Sorry,
I wrote :
I used DIMMER but that does give the full functionality.
this should be :
I used DIMMER but that does NOT give the full functionality.

Hi,
I can find that the Mertik controller is fully usable.
However I cannot control it except for On and OFF
How should I add the Mertik controller to my Domoticz application.
I used DIMMER but that does give the full functionality.
I am running Domoticz 2.2284 and the latest RFXtrx relaese.
Thanks ...