You have to use the sonof bridge / hub or app.
Ok so I got a few of them yesterday and installed first one… installation was rather smooth but the actual temperature reported is wrong… it constantly says 26.8… but changing goal temperature seems to work fine…
Same “actual Temperatur Stucks” issue for me. And the adjusting setting for the temperature (-1 degree e.g.) also does not work. Why is there not any smart thermostat on the market that works and does not cost a fortune… seems to be very tricky building and programming thermostats 
All thermostats work fine with the manufacturer’s app, which is what they are made for. If third-party integrations don’t work well, the problem ultimately lies with those integrations.
Hi Robert. Yes. But I have Homey and there it does not work properly. Even if there is an official app developer. I know, there is plenty of discussions on that, but still anoying for end customer…. and I do not wang to buy the hub for all devices (hue hub is already one too much… but also a sonoff, aqara, ikea, …. Just to make zigbee network devices work…?
I’m not sure if it’s a limitation of the system or a bad implementation, but I can’t seem to use the Thermostat widget with the Sonoff TRVZB. I have both Netatmo and Aqara devices, which are detected and work with the widget, but the Sonoff TRVZB doesn’t appear. Any ideas why?
Hello,
have you found a solution for the real temperature problems that remain stuck?
stuck, I moved to another brand
hello, can you please recommend another brand? I have tried Comet ZiGbee (doesn’t work), Sonoff TRVZB (partially works even there is an application in Homey PRO with support for this device)
thank you
They have solved it but is has not yet been released…
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Hello,
Can someone confirm if the fix works?
Im interested to buy the TRVZB to connect to my Homey Pro but would be nice to know if it works before i buy any.
Sorry for the late reply… yes, I can confirm that it works 
They have also released it as a proper version and not just a test version 
Hey, do you know if it works as with the eweb app and bridge-p where I pair an external (Sonoff) room temp sensor with the trvzb radiator valve to get the readings from the external sensor and thus the valve adjusts the radiator water flow based on that?
Simply put, can the homey app update the current temp value to the radiator?
Yes
Thx 
therefore, the valve still does not communicate the external temperature? Do you have to add an external sensor ? and can the temperature cooling problem be fixed? THANKS
I have this information which comes back on the application but the current temperature is 4 degrees higher but above all it never moves. You do not have these 2 problems with the update
Well just read the previous posts… yes they have solved that problem in version 1.6.4 that has been released
Does it for you also update the temperature really slow?
