Low Voltage Thermostat Heat and Cool Automatic Compatible System Type Electric Forced Air Furnaces Gas Forced Air Furnaces Heat Pump with Aux Heat Pump without Aux Millivolt PTAC Push Button Dehumidification Control No Differential Type Adjustable Digit Size Easy Read Digital Dual Transformer Compatible No Fan Settings Auto Humidification Control No Includes Positive Off Yes Minimum Control Temperature 44 Degrees F Maximum Control Temperature 90 Degrees F