[ETL Certified for Superior Safety] ETL certification is a trusted mark of safety and quality, recognized across North America for ensuring compliance with rigorous industry standards. Our self-regulating heating cable is fully ETL certified, from end to end, guaranteeing exceptional performance and reliability. Additionally, the plug is UL certified for added safety. For the safety please always choose a heating cable that is fully certified—because true safety comes with complete certification. Just the plug certified is not enough. The whole heating cable need to be certified. [Self-Regulating Technology] 5w/ft. 100 Ft Cable + 3 Ft Power Cord. Embrace the innovative self-regulating technology of our heat cable, designed to automatically adjust its heat output based on the surrounding environment. This intelligent feature ensures efficient and customized freeze protection for your water pipes, adapting to varying temperatures with ease. [Built-in Temperature Controller] Our electric heat tape comes equipped with a built-in temperature controller, a game-changer in freeze protection. As temperatures plummet, the pipe heating cable activates at 37℉(3℃), providing a steady flow of warmth to safeguard your pipes. Once the temperature reaches 50℉(10℃), the heat trace cable turns off, conserving energy while effectively preventing freezing and potential pipe damage. [Easy Installation] Enjoy a hassle-free installation process with our self-regulating heat cable. Designed for convenience, the pipe heating tape caters to various pipe lengths, ranging from 3ft to 160ft. The package also includes a 3ft length with a cold lead, making setup a breeze for users of all experience levels. This product is backed by up to USD 2 million in product liability insurance, providing you with added peace of mind and security in your purchase. [Versatile Application] Our water pipe heat cable is the epitome of versatility, suitable for both metal and plastic water pipes. The pipe wrap heat tape can protect pipes with a diameter of up to 2 inches, it caters to a wide range of residential and commercial applications. Experience the peace of mind that comes with consistent and efficient heat distribution, ensuring your water pipes remain unfrozen during the coldest months. 5JHSF is a self-regulating heating cable, can automatically adjusts the heat output at various points along the cable according to the ambient temperature. Built in thermostat, turn the cable on when the ambient temperature is 37℉/3℃, and turn it off at 50℉/10℃. When install the cable, please make sure the thermostat of the cable tightly against the pipe, and placed on the coldest end of the pipe to turn the cable on or off. Testing Method: Plug the cable in, put the thermostat of the heating cable on ice, and in approximately 5 - 10 minutes, it should feel slightly warm to the touch. No overheat risk. The maximum temperature that the heating cable can reach will not exceed 65℃ (149℉).