This is the original Nest Learning Thermostat. It learns your schedule to keep you comfortable, it can be controlled over Wi-Fi by a smartphone or laptop and works with 75% of low voltage systems. Auto-Schedule learns what temperatures you like and programs itself, you can also adjust Nest’s schedule at any time. Auto-Away saves energy by turning Nest down when you’re not home. Energy history shows you how much energy you’ve used and what affects your energy use most, you’ll also get an energy report every month with info about how much energy you’ve saved month-to-month. It’s compatible with about 75% of 24 volt heating and cooling systems, to find out if Nest will work in your home, see here. Installation takes most people 30 minutes or less, if you’re comfortable installing a light fixture, you can install Nest.