It’s a thermostat. Wifi setup was seamless. Has a great modern look. Works well overall. It has missed the mark with a few features and some that you would expect. The analytics for heating/cooling running times take not minutes or hours to display but days. When wanting to know how efficient my system was on (let’s say Sunday) due to a cold spell, I will need to wait till Tuesday to see how long it ran. Seems like low hanging fruit for the developers to incorporate. The system also does not display the current indoor humidity. This is important living in the south or really anywhere if you have health problems. I really wish you could set heating and cooling limits that could keep your home at a constant temperature. This system missed the mark in my opinion.