The Google Nest Thermostat E in White (T4000ES) is a programmable thermostat that allows for 7 days of programming. Powered by batteries and featuring a wireless wire configuration, this thermostat is compatible with Google Home/Assistant for smart home integration. With a circular shape and wall-mounted design, it offers various control styles including app control and voice control. The Nest Thermostat E also includes features like a digital display and Wi-Fi connectivity, making it a convenient and efficient choice for heating and cooling your home. Made of plastic, this thermostat operates on 24V of line voltage and is programmable for optimal energy savings.