Radiator Valve Temperature issue. 1,1 degrees = 11 degrees, 20 degrees = 200

Servus / hello :wink:

I have integrated a radiator thermostat using ZHA, but something seems to be wrong with the float values.
For example, if I want to set the temperature to 20 degrees, the thermostat tries to heat to 200 degrees (the maximum temperature in the thermostat is fortunately limited to 45 degrees).
So if I want to heat to 30 degrees I have to set the heating to 3 degrees in the Home Assistant, then 30 arrive at the thermostat.

Also when I send the command in the developer options with the climate.set_temperature service, the same conversion error happens.

I use this thermostat in the ZHA integration:

Does anyone have an idea what this can be and how I can fix it?

Thanks!
Manni