SpeedTrace Pre-Assembled Self-Regulating Heating Cable - BriskHeat SpeedTrace heating cables are an ideal solution for Ideal for easy to install pipe freeze protection and safe thawing of metal and plastic pipe amp; valve assemblies. May be used on metal and plastic water pipes, for pipe heating, but not on flexible vinyl tubing, (such as garden hoses). SpeedTrace Heating cable self-regulates the pipe heating cables temperature by automatically adjusting electric cable heat output based on surface and ambient temperatures. Plug-and-Play easy to install pipe heating solution! Automatically adjusts heat output based on surface and ambient temperatures No temperature controller is required. Plug-in ready pre-assembled power cord. Grounded design for added safety. Suitable for extreme cold conditions as low as -40°F (-40°C). Safe for indoor and outdoor use. Safe to overlap heating cable for easy installation. Use with Insul-lock° DS foam insulation for maximum thermal efficiency.