Electric outlet thermostatically controlled Thermostatically controlled outlet works with any 120V electrical device to turn the power to the device on and off according to ambient air temperature. When temperatures fall below 35 degrees F, the Thermo Cube will activate, powering up the electrical device. When the temperatures rise above 45 degrees F, it will automatically shut the device off. Saves electricity and wear/tear on your equipment. Typical applications include: well house heaters, greenhouse heaters, pond deicers, heat lamps, heat tap e and engine/battery heaters. UL and SA listed. Operates 2 devices..