The Nest Thermostat E is a programmable thermostat designed for easy control of your heating system. With a sleek white design and digital interface, it is compatible with Nest's smart home ecosystem for convenient wireless control. This thermostat can be programmed for up to a week, and supports various heating systems such as heat-only boilers, combi boilers, and zoned systems. Features like Wi-Fi connectivity, a backlit display, and app control make it a modern and efficient choice for maintaining a comfortable home environment. Bought and unused, hasn't left the box.