Actisense NMEA 0183 PC OPTO-Isolator Cable, RS232 DB9 Female, Shielded (Isolated to PC) [OPTO-4] Boat Outfitting Black Magic Air blocks are

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Actisense NMEA 0183 PC OPTO-Isolator Cable, RS232 DB9 Female, Shielded (Isolated to PC) [OPTO-4] Boat Outfitting Black Magic Air blocks areNMEA 0183 PC OPTO Isolator Cable, RS232 DB9 Female, Shielded (Isolated to PC) Add isolation to an RS232 port to protect against ground loops. The OPTO 4 provides a safe and low cost way of connecting an RS422 (NMEA 0183) system to an RS232 (PC COM port) system, or any other device with a standard RS232 9 pin port. The OPTO 4 provides comprehensive galvanic OPTO isolation to protect the PC input receiver, plus important spike suppression to improve the