Low Voltage Thermostat, Stages Cool 2, Stages Heat 3/ OVERALL LENGTH: 4.562 INCHES NOMINAL OVERALL HEIGHT: 6.000 INCHES NOMINAL OVERALL WIDTH: 1.250 INCHES NOMINAL BODY HEIGHT: 4.562 INCHES NOMINAL TEMP SENSING ELEMENT TYPE: THERMOCOUPLE CONTACT ACTION STIMULUS: DECREASE NONPILE-UP CONTACT ARRANGEMENT: 4 POLE, SINGLE THROW, BOTH POSITIONS MAINTAINED CONTACT ADJUSTABILITY: ACTUATION POINT ADJUSTABLE AND DEACTUATION POINT ADJUSTABLE CONTACT ADJUSTMENT RANGE: 40.00 TO 90.00 ACTUATION POINT DEGREES FAHRENHEIT CONTACT ADJUSTMENT TYPE: EXTERNAL ACTUATION POINT POINTER CONTACT VOLTAGE RATING IN VOLTS: 20.0 AC AT SEA LEVEL SINGLE VOLTAGE SPECIAL FEATURES: THE TH8320U TOUCH SCREEN UNIVERSAL PROGRAMMABLE THERMOSTATS PROVIDE ELECTRONIC CONTROL OF 24VAC HEATING AND COOLING SYSTEMS OR 750MV HEATING SYSTEMS. STYLE DESIGNATOR: 71 RECTANGULAR