Honeywell Thermostat, FocusPRO 5000 Series, 20 to 30 VAC, 750 mV, 0.02 to 1 A, 0.4 to 30 W Power, 50/60 Hz Frequency, Changeover: Auto, Manual, Up to 2 Heat/2 Cool Stages, Switch Position: HEAT-OFF-COOL-AUTO-EM.HEAT (System), AUTO-ON (Fan), Relay Switch, Thermistor Sensing Element, 5.09 sq-in Large Display, 40 to 90 deg F Heating, 50 to 99 deg F Cooling Settings, 5 to 90% RH Non-Condensing Humidity, Cool Current: Y and Y2: 0.02 to 1 A Running, Cycles per Hour: 1 to 12 Heating, 1 to 6 Cooling, Fan Current: 0.02 to 0.5 A Running, +/-1 deg F Accuracy, Heat Current: W and E: 0.02 to 1 A Running, W2 (AUX): 0.02 to 0.5 A Running, Dual Powered to Battery, Hardwired Power Source, Horizontal Mounting, Dimensions: 3-9/16 in H x 5-13/16 in W x 1-1/2 in D, Premier White