The Google Nest Thermostat 3rd Generation N77GNB in White is a brand new, sealed programmable thermostat that offers 7-day programming and wireless installation. With compatibility for Google Nest products and smart home integration, this thermostat allows for convenient control through the Nest app. The low-voltage unit provides 3 heat and 2 cool stages with thermal and frost protection, making it a reliable option for maintaining optimal indoor temperatures. Backed by a 2-year manufacturer warranty, this thermostat is a high-quality choice for home heating and cooling systems. Never Used