Honeywell Programmable Thermostat, T6 Pro Series, 20-30 V, 0.02 to 1 A, Programmability: 7 Day, 5-1-1 Day, 5-2 Day, Non-Programmable, Changeover: Auto, Manual, Battery Power Source, 2 Heat/1 Cool, 1 Heat/1 Cool Stages, Auto Switch, LED Display, +/-1 deg F Differential, 40 to 90 deg F Heat, 50 to 99 deg F Cool Settings, 37 to 102 deg F, 5 to 90 % Humidity, 1 deg F Accuracy, Cool Current: 0.02 to 0.5 A, Fan Current: 0.02 to 0.5 A, AA Battery, Heat Current: 0.02 to 1 A, White, Dimensions: 4-1/16 in L x 4-1/16 in W x 1-3/32 in D, Additional Information: 5.44 sq-in Display