Effectively keeps a constant even temperature in our upstairs rooms with our thermostat mounted downstairs. Would recommend this unit plus room sensors for anyone with a two story home that has previously found it challenging to keep even temperatures in all rooms.
The thermostat was easy to install. Completed in under 10 minutes. The user interface software can be a bit confusing if you have other people in your household and try to share it. It gets a bit more complicated when you add it to be controlled by the Ring App. Over I would still give it 4 out of 5 even with the complication of sharing access to multiple users.
The T9, with additional room sensors, is a great thermostat. I think the only thing I can really say that is wrong with it is that the dimmest night setting is still far too bright. As a result, the screen is either too bright or needs to be set to the 0%/off setting. Therefore, I would not recommend this unit to be located in a bedroom. If it wasn't for this one issue, I would have given a 5 star rating.
The guided setup is easy to use and allows for ample versatility. You are able to adjust the temperature based on the main unit, or an average of multiple zones, for ANY period(s) in the schedule. You are also able to have the thermostat utilize the motion sensor, in a given zone, for priority to be given to the zone(s) sensing movement.
All in all, I am very happy with my choice of thermostats.
Two smarts I love about my T9 are that when the screen goes blank it means the breaker switch has flipped off, and secondly, I love the system's ability to average out temperature readings from dispersed sensors and change priorities as the sun moves over the house.