Honeywell Touchscreen 7-Day Electronic Programmable Thermostat. Universal Thermostat: Conventional & Heat Pump compatible; Adaptive intelligent recovery (Smart Response), Menu-Driven Programming, Easy to read back-lit display (on demand), Filter Change reminder & Low Battery Indicator, Armchair programming, Four daily periods, Precise temperature control (+/- 1 F). 7-Day Programming - Allows separate programming for each day. Easy to Use Touchscreen Display - Straightforward display keeps operation and programming simple. Backlit Display - Easy-to-read, even in dimly lit rooms and hallways. Energy Savings - Program to save up to 33% on annual heating and cooling costs (If used as directed. Savings may vary depending on geographic region and usage). Smart Response Technology - Continually adjust the pre-heating/cooling of your home so you are comfortable at your programmed times. Auto Change from Heat to Cool - Automatically adjusts the pre-heating/cooling of your home so you are comfortable at your programmed times. Selectable temperature range stops. Filter Change Reminder - Keep your heating/cooling system operating at peak performance. Permanent Day and Time - Your settings are always maintained; even during a power outage. Daylight Saving Time (optional) - Adjusts the time automatically. Compatible - With heating and cooling plus heat pump systems. Does not work with electric baseboard heat (120-240V). 1-Year Limited Warranty.