resideo Thermostat, 20 to 30 V, 50/60 Hz, Manual, 2 Heat/1 Cool Stages, HEAT-OFF-COOL-EM.HEAT (System), AUTO-ON (Fan) Switch Position, 50 to 99 deg F Cool, 40 to 90 deg F Heat Temperature Settings, 5 to 90% RH Humidity Rating, Cool Current: 0.02 to 1 A, Cycles per Hour: 2 to 6 Heating and Cooling, Heat Current: 0.02 to 1 A, 4-11/16 in H x 2-7/8 in W x 1-1/8 in D, Premier White, Additional Information: Vertical Mount Orientation