Feature rich programmable / non programmable all in one thermostat, all-in-one programmable/non-programmable, Universal heat pump & conventional heat/cool, Dual power. Features Easy Installation, Program 7-day or non-programmable, Special-day programming, Easy-view back light, Optional wall plate model #WP567, User option: 2 or 4 periods per day, Programmable keypad lockout, Temporary override and manual hold, Dual powered (2AA) Alkaline batteries (included), Temporary compressor protection bypass, 5/2 minute selectable time delay for equipment protection, User temperature calibration, Display option: Fahrenheit or Celsius temperature, Adjustable heating and cooling limits, Speed Slide® for easy programming, Air filter monitor, Selectable smart recovery, AM/PM clock or military time option, Adjustable temperature differential/swing.