The fourth-generation Nest Learning Thermostat features a larger, sharper display and an updated sensor array that detects occupancy and sunlight to adapt temperature automatically. Its Farsight feature activates the display when it senses you across the room. The thermostat learns your preferred temperatures within a week and builds an energy-saving schedule. Home/Away Assist shifts settings when everyone leaves, cutting heating and cooling costs. Compatible with most 24V heating and cooling systems and integrates deeply with Google Home.