Fahrenheat WHT500 HT500 120 to 240-volt Wall House Heater, 500-watt Install anywhere heat is needed to prevent pipes, pumps and other water, hydraulic fluid, or oil-filled equipment from freezing Designed to provide automatic 24 hour heat protection Maintenance-free and can be left unattended all winter long, ideal for remote locations Steel sheath, aluminum finned element provides fast heat distribution