Model: NM-422ETH
NMEA to Ethernet

The NM-422ETH is a two channel NMEA-0183 input and four channels NMEA-0183 output multiplier. It enables data distribution from two NM-0183 sources (primary and secondary with priority encoding) to all NMEA-0183 instruments through four talker ports and direct PC connection through RS-232. In addition the Ethernet interface enables connection of the NM-422ETH in a local TCP/IP network topology. 

NM-422ETH NMEA converter to TCP/IP - UDP

Model: NM-541 MUX 5-channel NMEA multiplexer with Serial,USB, RS-422 
Model: NM-541 MUX-ETH  5-channel NMEA multiplexer with Serial,USB, RS-422, Ethernet 
NM-541 is a four or five input channel multiplexer with five output channels NMEA-0183 data multiplier. It enables combining and multiplying of all NM-0183 sources to the navigational instruments through five talker ports and PC connection through RS-232, USB and an optional Ethernet interface.