Rizzo
My sparky said he was going to speak to clipsal about the backing plates as you have to tighten them a bit otherwise they will move, but then they don't sit flush properly. He said they need some sort of bracing on the back and it would solve the problem.
Yep, the non c-bus ones are plastic.
Yep, the non c-bus ones are plastic.
Yep again poor design for a top end product. I have found there is a sweet spot of about half a turn between being too loose and too tight the cover doesn't fit.