Looking for a thermostatic head with an external temperature sensor

Hello
I am looking for a thermostatic head for central heating from the city with a remote sensor something similar to fibaro (but with fibaro supposedly there are constant problems and the battery dies after 3-5 years, I am looking for something reliable)
The problem is that near the window I have 22 degrees and a normal head regulates the heating so that in the rooms I have 25/26 degrees to the heat node has a sensor for the temperature and at night when it is colder additionally reheats and is a massacre can not sleep I get up sweaty. This is always the case every year in spring.
Once again, in winter when the temperature is below freezing I have 23/22 degrees in the rooms during the day and at night in the morning it hits 24/25/26 and when I open the window literally for 5 minutes and it's already 23/22/21 degrees all day long without opening the window again and there are also temperature fluctuations between the rooms, which is why I would like to even this out to one temperature. I'm fed up of constantly reporting this problem to the district heating company because they screw it up again so that now it's fine when it's warmer and in winter the temperature won't even exceed 20 degrees in the rooms without opening the windows. The plumber can't help because the sensor on the junction is set so that it is either too strong or too weak. Therefore, let it stay as it is in winter I know it is these: 22/23 degrees it is worse now when we have such changeable weather or in spring when it gets warm or at night when the sensor on the node "hits the cooker".
The head must be compatible with the danfoss rtd-n 30x 1.5
Can you recommend something good for years?

Perhaps something like this would satisfy you:
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These traditional heads all work with a hysteresis of + / - 2 degrees after that the maximum distance of the capillary is 1.5 metres, I can not achieve a constant even temperature in rooms with something like a network of space can heat with such jumps.
I was also thinking about the OXT GTZ10 with an external sensor but it also has an avalanche of comments that it does not work well, but here the hysteresis is 1 degree.
I guess the only right way, although not the cheapest way is this: https://hejdom.pl/blog/71-salus/481-salus-ste...erami-zestaw-z-zewnetrznymi-termostatami.html and here you can already quite accurately regulate the temperature +/-0.5 or +/-0.25 degrees of hysteresis and I do not see anywhere any negative reviews it is probably good or too expensive such a solution to have a lot of opinions?