21131 is a highly flexible, oil-resistant control cable manufactured by Helukabel. It is made of stranded, bare copper conductors and is wrapped in a polychloroprene (PCP) sheath. The cable is designed for both indoor and outdoor use, and can be used for applications including automation, building automation, and data transmission. It meets international safety standards for electricity, and it also has low emission rates for emissions such as halogen, acid, and cadmium. It has an operating temperature range of -20°C to +105°C, and is resistant to oil, grease, and hydrolysis.