EASY-TO-READ TOUCHSCREEN: The large, lighted touchscreen display keeps comfort levels crystal clear HIGHLY COMPATIBLE: Works with virtually all North American heating and cooling systems COMFORT CONTROL: Choose between 2 or 4 periods per day, plus ensure consistency with programmable touch pad lockout for unauthorized users TEMPERATURE LIMITS: Stay in your comfort zone with adjustable heating and cooling temperature limits YOUR WEEK YOUR WAY: Enjoy 7-day or 5/2-day temperature programming that fits your schedule