Electric Pipe Heating Cable - UL Listed, designed for the sole purpose of preventing metal and rigid plastic water filled pipes from freezing. Wrap On Pipe Heating Cable prevents frozen water pipes to –50ºF. Simply wrap on, insulate and plug in. Engineered for use on metal and rigid plastic pipes. Uses an exclusive Press-To-Test™ button so you can test the cable before installing. A built-in thermostat turns the cable on at 38ºF. Proven low-wattage design uses up to 70 percent less energy than other cables and protects to –50ºF. An exclusive power sensor light glows when the thermostat is closed.