Optimize your home's energy efficiency along with safety with the Google Nest Smart Thermostat and Doorbell Smart Security Camera. The Nest Learning Smart Thermostat learns your lifestyle to turn itself down while you're away to save energy. You will also have the capability to control your home temperature from anywhere with your phone or smart home device. Interact with visitors at your door and hear loud and clear with the HD Talk and List feature that suppresses background noise. The built-in HD night vision gives you the most precise picture. With your thermostat and security camera upgrades, your home will stay well connected and efficient.