King Electric K101-C Bi-Metal Cooling Line Voltage Thermostat, 1-Pole, White For line voltage cooling applications. No ground wire design Accuracy: +/- 3F. Includes c and f control dials. Bi-metal sensing element Etl listed. mounts directly to a 2x4 inch vertical electrical outlet box Large knob allows easy adjustment to all temperatures. Single pole, operates 41 degree - 90 degree f (3 degree- 32 degree) Fully vented cover allows air sensing in all directions