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Pin No. Color Function Remark (Port No.)
18 Light green NET-C IN (0V) NMEA 2000 Power IN:
When 12V DC power is
applied on these pins, the
NMEA2000 port will
provide power (up to 1
amp)
17 Pink NET-S IN (+12V IN)
16 Purple Shield
15 White BUZZER or EVENT IN External Buzzer Output or
MOB/Event Input (Contact
Closure)
14 Gray SPEED-ALARM C Speed alarm contact.
Can trigger and external
alarm or device when
speed reaches a setup limit
13 Yellow SPEED-ALARM H
12 Black/White +12V External buzzer power
ONLY (100mA Max)
11 Black GND
GND for Event/MOB Input
10 Blue/White
RD3-B [(-)NMEA3 IN]
Port 3
9 Blue
RD3-A [(+)NMEA3 IN]
8 Green/White
TD3-B [(-)NMEA3 OUT]
7 Dark Green
TD3-A [(+)NMEA3 OUT]
6 Orange/White GND
5 Orange GND
4 Brown/White
RD2-B [(-)NMEA2 IN]
Port 2
3 Brown
RD2-A [(+)NMEA2 IN]
2 Red/White
TD2-B [(-)NMEA2 OUT]
1 Red
TD2-A [(+)NMEA2 OUT]
22