3rd generation thermostat with a bigger and clearer LCD display. The system learns the temperatures you like and programs itself in about a week. It also turns itself down when nobody's home to help you save energy. When it spots you across the room, it lights up to show you the time or the temperature you set. The thermostat can be controlled at distance with an application directly on a smart phone, a tablet or a laptop with a WI-FI connection. Compatible with mostly all 24 volts heating systems. Built-in rechargeable lithium-ion battery. Consumes less than a kilowatt/month. Mounting kit included. 2 years limited warranty.