The version has changed; It does not have Wi-Fi connection indicator light, the manual is not adapted, but it works correctly

Works. There is a battery. I liked it. Polluted quickly.

Pratsyu, ale cheat, scho through the thyristor keruvannya a turn for a small sweat and Vidai hum, AK vid of the transformer

every thing is ok but reading kwh differents some points
and device wifi sometimes disconnect

Good thermostat but you need a zigbee router which is where the thermostat works not occupying the wifi network.
The router passes the thermostat info to the internet when prompted.
Once assembled the system goes well