I purchased two of these thermostats for my home. They were easy to install and work as advertised. I note that the packaging states that the warranty is void unless installed by a professional. If you intend to install these by a non professional I recommend that you follow all instructions, especially cutting all HVAC power, so as not to create an arc and possibly damaging the unit. I am not much of a techie, but the smart phone app is easy to download, set up and operate. I also integrated it with Alexa and it works as advertised there there too. The one thing I question is the accuracy of the humidity reading. I am not certain how I can have 10% humidity out doors and 30% humidity indoors without some source of increasing my in-door humidity. This a small thing though. Overall I am happy with the unit and feel I am getting my money's worth. I would buy them again.
I am impressed with the look and layout of the screen. The APP works great on my Android phone. Easy to set up with my Google Home system as well. All in all, very impressed with the thermostat.