Sierra's NMEA 2000 series of waterproof cables and adapters are NMEA approved and specifically designed to fit marine requirements. Our NMEA series cables follow the requirements of a serial data communication network to interconnect marine electronic equipment on vessels. Rated to IPX7 for reliable, water-tight connectionsPremium metal connection collars ensure connections are tight and secureInterchangeable with other NMEA 2000 productsTerminals built with gold-plated copper alloy for superior conductivity^Includes:PC51060 Micro T-PiecePC51080 Male Termination ResistorPC51050 Power T Cable, 3'PC51160 Micro-C Drop Cable, 6'PC51070 Female Termination Resistor