I have a working configuration with the VRCS4-MRZ. I described it in a new topic here . It turns out the VRCZ4 and VRCS4 work rather differently, so I don’t know how well my solution will work for the VRCZ. In my research, it seems that the VRCZ would be easier to program for, with its separate on/off buttons and since it uses zone control commands rather than scene commands. But I don’t have one to try, so it’s up to someone else.