WHITE-RODGERS™ Thermostat, 70 Series, 20 to 30 VAC, 1 to 1.5 A, 1 to 45 W Power, 50/60 Hz Frequency, 2 Heat/1 Cool Stages, Switch Position: HEAT-OFF-COOL, EM.AUTO, AUTO-ON, 1.2 sq-in Display, 0.8 deg F Fast, 1.5 deg F Slow Heating, 1.2 deg F Fast Cooling Fixed Conventional Systems, 1.2 deg F Fast, 1.5 deg F Slow Heating Pump, 0.8 deg F Fast, 1.2 deg F Slow Auxiliary/Emergency Heating Differential, 45 to 90 deg F Settings, 32 to 105 deg F Ambient, 90% Non-Condensing Humidity, +/-1 deg F Accuracy, Hardwired Power Source, Horizontal Mounting, Dimensions: 3.7 in H x 5.1 in W x 1.1 in D, White