Designed to protect metal, copper and plastic (PVC or CPVC) water-filled pipes during the winter months, Wrap-On Pipe Heating Cables prevent pipes from freezing and bursting up to -50°. Easy to install, simply wrap the pipes, insulate them and plug in the cable. Includes a built-in thermostat that turns on at 38° F. The proven low-wattage design uses only 2 watts per foot. An exclusive power sensor light glows when the thermostat is on. 120 volt-UL Listed.