This thermostat came with my new HVAC system and it has worked fine so far (about 2 years). The only issue I've had was there have been times when the device will not connect to the app. It usually fixes itself so it has not been that much of an issue and that could be an app problem, not a device problem, not sure.
It works perfectly, and I didn’t have to stay up all night reading the manual to figure it out. It’s simple and it’s accurate. The final item on building my new system. It was a good choice.
2nd one in 2 years goes out can’t do anything. Unreliable Not feeling very good about the product. I know I’m not buying a 3rd to replace it. I will look into other brands.