Ecobee3 Smart Wi-Fi Thermostat with Room Sensor - BlackEcobee3 Smart Wi Fi Thermostat with Room Sensor. Black finish. Features: Smart, really smart intuitively understands when to turn on your heating or cooling equipment based on your home's unique energy profile, the weather outside, and thousands of other data points to make sure you're comfortable at all times Knows you have a life senses whether anyone's home and which rooms are occupied, delivering comfort when you're at home and saving you energy