moes thermostat

Morning all, and merry Christmas. I am looking to replace my old sangamo choice rstat1 with a moes but-002 go. A bit of back ground. Downstairs we have water underfloor heating upstairs there are radiators. I have 4 room stats downstairs and leave the boiler on all. The time and control the...

Hi hope someone can help, I have read and got a lot of answers in the past, but couldn't sort this. I've purchased "MOES WiFi Smart Thermostat" from amazon, and need it t replace a simple on/off switch that controls the boiler. Pics below of inside the current switch. Wiring diagram for the new...

Hi Guys, I'm looking at replacing my Drayton Combi Stat with a Moes smart thermostat. (The GC model for central heating boilers) As you can see from the pics, I only have 3 wires going to the existing thermostat. The Moes needs 4. I'm pretty sure what to do here with a bit of research, however...