Honeywell Thermostat, T822 Series, 20 to 30 VAC, 0.02 to 1 A Heat, 1 Heat Stages, Switch Position: Heat-Off (System), SPST, Precision Snap Action Switch, Bi-Metal Sensing Element, 45 to 95 deg F Settings, +/-2 deg F Accuracy, Heat Current: 0.02 to 1 A Running, Vertical Mounting, Dimensions: 4-3/4 in H x 2-7/8 in W x 1-3/8 in D, Premier White