In center: mesured Temperature
in top left: manual/program/power icon and wanted temperature
in top right: battery level
in bottom left: firmware number
in bottom right: signal level
middle right: the tendency of the temperature
outside the box, the name of the Thermostat

The tendency is an average of 10 records of temperature and I compare it to the last average to show the icon
The result:

if average > last average, it display Up arrow if average < last average, it display Down arrow if average equal to last average, it display Right arrow

Naturally, you can choose to display what value do want (but you can’t hide mesured temp !)

I will write a new Wiki for installing (and using) very soon !