Which electronic radiator thermostats to choose? What to look out for?

welcome

i'm browsing through Dr. google and everyone ¿. praises his goods

could one of your esteemed professional colleagues please tell me what to look for when choosing an electronic thermostat or, more importantly, recommend me some specific models ?

4 radiators, co..,

i was browsing the offer of conrad_en and buying one is about 150 zł and I see that it is quite a good solution to use window sensors