Electrolux HSRL and HSRM Self Regulating heat trace provides safe, reliable heat tracing for freeze protection of pipes, valves, tanks and similar applications, and is approved for use in DIV 1 hazardous locations. Constructed of industrial grade 16 AWG buss wire with a tinned copper braid and fluoropolymer overjacket, HSRL and HSRM ensures operating integrity in Div. 1 hazardous environments. HSRL and HSRM heating cable has a maximum maintenance temperature rating of 150°F (65°C) and 302°F (150°C) and a maximum exposure temperature of 185°F (85°C) and 420°F (215°C).