TRM Self-Regulating (SR) Heating Cables are safe, flexible and easy to install in a wide range of residential, commercial, and industrial applications where the heating cables need to be exposed to free air, rather than being embedded in a medium. Self-regulating technology allows each of these heating cables to adjust its wattage (heat) output based on the temperature and environment to which the cable is exposed. In cold conditions, it generates more wattage (heat). In warmer conditions, the output is reduced and, thereby, saves energy. This technology also helps make it one of the safest heating cables on the market, as well as the industry standard for most roof and pipe tracing applications. If it encounters a warm surface or is exposed to a warm ambient environment, the cable will automatically adjust its wattage output and avoid overheating in any one location. They can also be cut, field-terminated, and crossed over themselves.