I have the 3, but it’s a wonderful innovation. It saves us 23% on our energy bill and has cut our footprint significantly. It knows which room we are in and tunes the temperature to our desired limit in that room. It also knows when we are home or not through geo-fencing and makes the necessary adjustments. It also works well with Alexa. The 4 has Alexa built in.
Contributors: William Schroeder from Just Mind