SB2006 NMEA multiplexer. This high-speed multiplexer is programmable and has galvanically separated signals. Ideal as a connector between instruments, radar, displays such as the Raymarine displays-, c- and e-series or the C- and E-series and AIS, autopilot, VHF and other NMEA devices. It allows you to connect multiple NMEA devices. So you no longer need to double connect NMEA cabling to 1 port.