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Heading Monitor Unit (Off Course Alarm) NMEA Input

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HEADING MONITOR UNIT (OFF COURSE ALARM) NMEA INPUT - MD76/8

The MARINE DATA MD76/8 is an important aid for maritime safety. An alarm will sound if the vessel heading deviates by more than a pre-set amount.

The MD76/8 allows the fulfilment of IMO requirements for using an autopilot. Suitable for workboats, tugs and fishing vessels. Accepts NMEA 0183 heading data from any independent heading source. Rugged, marinised aluminium alloy housing.



  • Input: NMEA(0183) RS422 - $HEHDT, $HEHDM, $HEHDG
  • Output: Clock, Heading, Reset and 24V DC (for backup system)
  • Power: 24 – 28V DC
  • Dimensions: H=190mm: W=96mm: D=183mm (Trunion Extra)
  • Weight: 1.20kg (Trunion Extra)
  • Environment:Sealed to IP54



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For more information about this product please do not hesitate to contact us.