The thermostat is well lit and simple design. I can easily see the temperature in the house across the room. It’s a bit bigger that some of the other circular smart thermostats but not overly large. The app is great and allows you to see things remotely but also to have great reporting. An extra sensor is not a necessity but might be helpful if you wanted to see the temp etc in the basement.

Love the smart features and ability to set Temps ahead of time and detection of when we're home. Love coming home to a perfect temperature! And it has helped with our energy consumption.

I have been using the Ecobee 4 since it was released in 2019, and I have been very impressed with it. It is a smart thermostat that learns your schedule and programs itself to save energy. It also has a built-in Alexa speaker, so you can control your thermostat with your voice. One of the things I like most about the Ecobee 4 is its ability to learn my schedule. I have it set to automatically turn on when I wake up and off when I go to bed. It also knows when I am away from home and turns down the heat or air conditioning to save energy. I also like the Ecobee 4's built-in Alexa speaker. I can use it to control my thermostat, play music, get news, and more. It is very convenient to be able to control my thermostat with my voice. Overall, I am very happy with the Ecobee 4. It is a smart thermostat that learns my schedule, saves energy, and has a built-in Alexa speaker. I would definitely recommend it to others. Here are some pros and cons of the Ecobee 4: Pros: Learns your schedule and programs itself to save energy Built-in Alexa speaker Easy to use Programmable Wi-Fi enabled Remote access Energy efficient Stylish design Cons: Can be expensive Requires C-wire (not compatible with all HVAC systems) Some users have reported connectivity issues Not compatible with all voice assistants Overall, the Ecobee 4 is a great smart thermostat that offers a lot of features and benefits. It is a bit expensive, but it is worth the investment if you are looking for a way to save energy and make your home more comfortable.