HISFK Self Regulating Heating Cable Kit Dry Location Industrial Grade 100Ft 120VSuitable for freeze protection of liquid inside the plastic and metal pipe. (including inlet pipe, drain pipe, sewer, palm tree, etc), and smoothly adjust the output at each point along the cable according to ambient temperature of installation area. Standards: UL515, UL1588, IEC IEEE 515, IEC IEEE 515. 1 and CAN CSA c22. 2 No. 130. 03 Use on dry location, can be used by straight, spiral and overlap type, which suitable for the pipe outer Dia. Also