White-Rodgers Mechanical Non-Programmable Thermostat

For single stage heating and cooling (1H/1C), heat only, cool only, hot water, gas, electric furnace, single stage heat pump, floor/wall furnaces and millivolt heat applications. Resistant to vibration. Mercury free, snap action contacts are enclosed for increased reliability and accuracy. Built-in bimetal thermometer. Manufacturer part number 1F56N-444.