This is a nice wi-fi thermostat. Easy to use. Easy to understand. Straightforward and business-like. Works perfectly. Pair it up with the equally solid free app and you are nicely set up. The reason for "only" four stars is in what else I would like to have: 1 - I would like to be able to turn the unit off or on or be able to change from heat to cool remotely from my phone, and 2 - I would kinda like the screen light up when I walk up to it.
Love the geofencing ability! Love that I can set a sleep temp and a time for it to cool down or warm up. And love having the ability to control it from anywhere. Saves time and money!