Ok, understand thanks. I’m looking for a system to work with Home Assistant that can operate 6 or more zone valves. So putting aside the Drayton control box are you able to interface/connect each Wiser thermostat to Home Assistant so as to allow HA to do the control logic (via the gateway; which I know is in the control box)? It would seem so from the screen picture included in your original post above. have plenty of output control relays (Sonoff/Tasmota) that can be used to control the zone valves. Would be very grateful if you could make a copy of your NodeRed flows available somehow; Github perhaps?