I don’t have a master device as all. The house is from the 70’s, and all our radiators were only manually adjustable valves (turn from 0 to 5). The wireless system just replaced having to hand-turn every radiator on and off daily. No master device was present at all.
The discussions on Lemmy were exactly what made me try out Linux, and now I’m an avid Linux’er. +1 for Linux.