Hi, I have three W400 Thermostats (FCU) controlling three air-conditioning units in my apartment. They work really well and look great (also kudos on the recent Matter firmware update). I would ask however for a feature improvement:
If you set the temperature to 25ºC the thermostat will only turn off cooling at 24ºC and then back on again at 25ºC. This causes 1ºC “swings” in temperature from 24 to 25. I would suggest that the range instead should be off at 24.5ºC and back on at 25.5ºC, or a user selectable range around the selected temperature (+/-1ºC, +/-0.5ºC etc.)
Also it would be useful if the calibration adjustment was in 0.5ºC steps rather than 1ºC.