No RF control of R2/R3. I have the Lightmanager air and this one can be controlled with the HTTP (requests) integration. I am not sure about the mini.
I can control my Air with the requests integration and this source line:
url=“http://192.168.178.49/control?scene=0&scene=3”
to switch on my light. I also use it to control my RF projector screen.
So look if there is a web control of the Mini possible.
Ralf