Easy to install, set up and operate. Display is crisp and clear. My wife and I both found the on-device menus very intuitive to use. Pairing and App are straight-forward. Works with both 2.4GHz and 5GHz wifi. We set the display backlight to 10% for day and night - for subtle but still clear screen illumination. Recommended overall.
I had bought a Nest unit but absolutely hated the rotary dial to access menus. That said, this is my first WiFi thermostat; I've had it for several weeks and I love it. The ability to control it away from home, even just from another room is such a convenience. Another big plus too is having a PIN lock it so others can't fuss with it. The screen has really nice contrast and dimming is controllable. Numbers are large and legible from a good distance. The app is basic and straight forward, however adding the ability to change or disable the thermostat PIN from the app would be a nice feature. Overall, I'm very pleased with this!
The T9 thermostat work great but finding that the room sensor I brought after seem to not give the right room temperature to the thermostat, end up not using the room sensor and everything working fine again with the thermostat