I bought it for the bedroom in order to control the radiator. I am not satisfied, here's why:

POSITIVES:
- Beautiful, with a low profile and a large bright temperature display. The front face is white-translucent and the back has an LED matrix that lights up and shows the temperature, etc. It shows for a short time and then turns off, to see it again you have to touch the finder logo.
- Adjustable delay and the only one with a delay of up to 0.2 degrees Celsius (others have 0.5).
- Good application, it doesn't disconnect and doesn't lose the settings.

NEGATIVES:
- It operates with 4 AA batteries, in a 2+2 parallel arrangement, totaling 3V. They run out very quickly, I used rechargeable ones and they need to be charged every 20 days...
- When the batteries run out, the thermostat turns off, but nothing is shown in the application, it continues to display the last recorded data. The only way to realize that something is wrong is up close, the application is useless...
- Unfortunately, it does NOT constantly communicate with WIFI, due to battery consumption... It does it at least every 3 minutes, so it does NOT have an immediate response to commands. For example, if you change the temperature in the application, the command will be executed WHEN the thermostat communicates with WIFI, in other words, it takes forever... I think this is the biggest problem. The company produces a 3.3V power supply that it sells relatively expensive, but it doesn't even accelerate the response. The thermostat will execute your command when it's time to connect, at least every 3-5 minutes of the hour.

CONCLUSION: I am not satisfied and it definitely is not worth the money I paid... The lack of immediate response in the application and the high battery consumption are very annoying. I honestly wonder how they released it on the market with such design problems. On the positive side, the support from the dealership and the purchasing store was good, they responded immediately to the above-mentioned issues, but without providing a solution since the circuit is designed this way.

UPDATE: After 3 months of use, I bought the company's power supply, which is sold separately (about 35 euros), in order to avoid constantly changing batteries. It is very small and fits in the wall outlet box. So far, it works well, although it still doesn't respond immediately to commands through the application (it is designed to update at certain time intervals). As a thermostat, it is very accurate in measurements, but if you buy it, don't forget to order the power supply, otherwise, get ready to buy battery packs...