PROGRAMMABLE Elegant Design Easy to Operate 7 Day Program Large Backlit LCD Display Precise Temperature Sensing Non-Volatile Program Memory Zoning System Compatible Compatible with Standard 24 volt AC Heating/Cooling Systems Integral Four Minute Anti-Short Cycle Protection Mercury-free, Environmentally Safe Easy to Operate Auto-on Fan Switch NON-PROGRAMMABLE Elegant Design Easy to Operate Auto-on Fan Switch Zoning System Compatible Cool-Off-Heat System Switch Precise Temperature Sensing Large LCD Temperature Display Selectable Fahrenheit or Celsius Mercury Free Environmentally Safe Compatible with Standard 24volt AC Heating/Cooling Systems Integral Five Minute Anti-Short Cycle Protection Manual Changeover NEW CONSTRUCTION SC60 - SC75 — Two wire installation — Four fixed set point models to choose from: 60F - 75F in five degree increments SC60S - SC75S — Three wire installation Switched fan, 3 modes: — Fan only — Off —Heat or Cool Four fixed set point models to choose from: — 60F - 75F in five degree increments