The Honeywell touch screen 7-day programmable thermostat provides maximum flexibility for busy lifestyles. You set it up to adjust the temperature when you are away or asleep--times when you don’t necessarily need to heat or cool your home to optimum comfort--and your heating and cooling equipment runs less. The RTH7600D features a green backlit touch screen interface with simplified programming and easy to follow text instead of symbols. Exclusive Honeywell Smart Response technology continually adjusts the preheating/cooling of your home so you are comfortable at your programmed times. It also automatically determines if your home needs heating or cooling to provide maximum comfort. Universal compatibility--works with virtually all system types.