Honeywell Home 5-2 Day Programmable Thermostat, White, 2.5 L x 6.38 W x 7.94 H

5-2 DAY PROGRAMMING: Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, arrive and sleep PRECISE TEMPERATURE CONTROL: Precise temperature control of +/- 1 degree Fahrenheit. DIGITAL DISPLAY: The display panel is backlit with an intuitive interface for one-touch access to setpoint temperature EASY INSTALLATION: Easy to install yourself and works with many heating/cooling systems, plus heat pumps without auxiliary heat REMINDERS: Built-in battery change and filter change reminders.RETAINS PROGRAMMING: Retains programmed memory in event of power outage.COMPATIBLE WITH: Gas, oil or electric furnace, Central air conditioner, Hot water system with or without pump, Millivolt system, Central heating and cooling system, Heat pump without auxiliary/backup heat..CANNOT be used on heat pumps with backup heat, multistage systems, radiant or line voltage systems.