Auto-Schedule: No more confusing programming. It learns the temperatures you like and programs itself. Wi-Fi Thermostat: Connect the Nest Thermostat to Wi-Fi to change the temperature from your phone, tablet or laptop. Energy Saving: You?ll see the Nest Leaf when you choose a temperature that saves energy. It guides you in the right direction. Smart Thermostat: Early-On Nest learns how your home warms up and keeps an eye on the weather to get you the temperature you want when you want it. Home/Away Assist: The Nest Thermostat automatically turns itself down when you?re away to avoid heating or cooling an empty home. Works with Amazon Alexa for voice control (Alexa device sold separately) Auto-Schedule: Nest learns the temperatures you like and programs itself in about a week. Home/Away Assist: Nest automatically turns itself down when nobody?s home to help you save energy. Remote Control: Connect your thermostat to Wi-Fi to control the temperature from your phone, tablet or laptop. Farsight: When the Nest Thermostat spots you across the room, it lights up beautifully to show you the time, temperature or weather. Energy Star: First thermostat to earn Energy Star. Your thermostat controls half your energy bill - more than appliances, more than electronics. Saving energy starts with your Thermostat. Energy History: Check your Energy History in the Nest app to see how much energy you use and why. Nest Leaf: You?ll see the Leaf when you choose a temperature that saves energy. It guides you in the right direction.