Waterproof jumper refers to a fiber optic jumper with a solidly designed PU sheath and armored structure, which complies with the ODVA (Open Equipment Vendors Association) standard and meets the IP66/67 environmental sealing level. It is waterproof, dustproof, and resistant to high temperature, and is often used in harsh outdoor environments. Waterproof jumpers are similar to ordinary jumpers, including single-core, double-core, multi-core, etc. The connectors can be customized as LC, SC, FC, etc. according to needs.