Temperature - controlled cable runs straight along pipe and valves, held in place by application tape and plugs into grounded electrical outlet. Keeps water flowing to -40. Pipe requires 1/2" non-flammable insulation such as fiberglass. For plastic pipe, its recommended wrapping pipe with aluminum foil before cable installation. The traditional resistance cable produces a fixed amount of heat based on the electrical line feed. It comes with a built-in thermostat that switches the flow of electricity on and off based on temperature. 120 volts. 7 watts per foot. CSA listed.

TAPE HEAT BND 18.3M 420W Freeze protection for water supply pipes Fixed resistance Pre-terminated length of 60 ft UL listed to Canadian safety standards and CSA certified when used in accordance with instructions on water-filled metal or plastic pipes Activated and de-activated by an integral energy saving thermostat Built in thermostat