@Tony I'm going to try swapping the nodes. If it's a distance challenge it becomes an issue. I've then got the 2 M4 nodes essentially on top of each other. In a 100 sqm house I've have them at one...

I've got the following set up 2 M4 and one M3W. I constantly get one of the various units showing red then going back to white on their own with no action. Main M4 unit is in the living room. Second...