The IP68 rated RS232 Cable Kit is designed to be used with our 3DM-GV7 sensors, and comes with everything you need to connect to a GV7 via an RS232 interface. The IP68 rated micro DB9 connector is required to make sure that the sensor maintains its IP68 rating. This cable also has two BNC connections broken out for access to the GV7's GPIO pins to help you enable the event system, PPS sync, or NMEA aiding.