Connect multiple NMEA devices to your PC, chart-plotter, radar, autopilot and more. The Actisense NDC-2 NMEA Multiplexer enables up to four NMEA devices to be multiplexed into one NMEA 0183 output. By filtering out data which is not required, reducing the quantity of data to prevent information overload, or blocking problem sentences. The NDC-2 data input ports are all compatible with baud rates up to 38400 (and one to 57600), making for compatibility with AIS systems and beyond.