Smart thermostat WLAN Wi-Fi Bluetooth Low Energy (BLE) Display: LCD Power source: Battery Temperature sensor Humidity sensor White Programs itself. Saves energy.Meet the 3rd-gen Nest Learning Thermostat. It has new rings and a big, sharp display. And hot water control.Relax, weve got you covered.The Nest Learning Thermostat should be installed by a professional. A Nest Pro will install it in the right location, connect the Heat Link and set it up for you. Nest Stand sold separately.Your thermostat controls 60% of your energy bill. So shouldnt it help you save energy?The Nest thermostat does. Since 2011, we estimate that its saved over 39 billion kWh of energy in millions of homes worldwide. Because it learns from you. It gets to know the temperature that you like when youre at home. And turns itself down when youre away. It even learns how your home warms up or how draughty it is, so it only uses the energy it needs. Thats how the Nest thermostat saves energy.Your life with Nest.