20meter extralong length supports longdistance RS232 serial wiring for largescale industrial and monitoring systems; Down rightangle male connector avoids cable bending stress, perfect for narrow panel and limitedspace installations; Goldplated pins provide antioxidation, corrosion resistance and stable longterm serial signal transmission; Multilayer shielding structure blocks electromagnetic interference to ensure reliable data transfer over long distances; Widely used for industrial control, PLC equipment, automation devices, monitoring systems and longrange COM port connections