Emerson 1F85-277 Universal Programmable Thermostat with 3 Heat and 2 Cool Stages Universal compatibility: Heat Pump, 3 Heat / 2 Cool; Multi-Stage 2 Heat / 2 Cool 7-Day or 5+1+1 day programmable or non-programmable For 24 VAC or Millivolt systems Large LCD display with backlight Hardwired or battery powered