7 Day, 1 Program Thermostat, For Each Day Of The Week, Lit Display, Permanent & Temporary Override, Set Point Saved In Power Loss, Single Stage Heating & Cooling, Heat & Cool Only, Central Air, Furnace, Warm Air, Heat Pump With & Without Auxiliary Heat, Hot Water & Steam Or Gravity, 750 Millivolt, Gas Fireplaces 24V Or 750 Millivolt.