The Ecobee3 Lite Smart Thermostat is a programmable thermostat that operates on a 24V corded electric power source. It comes with a trim plate for wall mounting and a 4-wire configuration. This 2021 model features Wi-Fi connectivity, touch control, and compatibility with Google Home, Amazon Alexa, and the Ecobee app. The thermostat has a 3.5-inch display, 7-day programmability, and is designed to work with the Ecobee3 Lite model. Its round shape, white color, and dust-resistant material make it a sleek and durable addition to any home's heating and cooling system.