Honeywell TH6320U2008 U Low Voltage Thermostat Heat & Cool, Auto, 5 1 1 5 2 7 Day, Horizontal, Square 22974001 2 and 3 Hour Through 2 and 3 Hour Through Penetration Firestop Systems Temp ASTM C1107 WiFi Capability No 3H 2C Heat Pump Mounting Direction Horizontal Number of Heating Stages Conventional System 2 Number of Heating Stages Heat Pump System 3 Operating Temperature Range 32 Degrees to 120 Degrees F Application Heat and Cool Backlit Screen Yes System Settings Auto Cool Emergency Heat Heat Off Minimum Operating Humidity 5 % Maximum Control Temperature 99 Degrees F Maximum Operating Temperature 120 Degrees F Backlit Screen Color Blue Temperature Readout Yes Contact Rating 20 30V AC Minimum Operating Temperature 32 Degrees F Temperature Differential 1 Degrees F Frequency 50 Hz