Overall good thermostat that works great with Smart Homes. I have two in our home. It is simple to use and performs wonderfully. It has all your needs taken care of and communicates great with our electric company with their electric perks program.
I purchase this thermostat to replace the original t6 thermostat that went offline and seemed to lose the ability to connect to wifi. This one has done the same thing in less than 2 months. I live out of state and this is very inconvenient.
Basic functionality works well and app generally responds. Issues lies in integration with Alexa, worked at first but has gone downhill since. Also you have to make changes multiple times in app before it remembers the change.
I had this installed at my lake cabin mainly to heat it up while traveling to it which never occurred this winter. As far as I know it maintained the 50 degrees I set it at for an unoccupied space.