The Autonnic Compass Sensor is a great value, high quality and accurate electronic compass for all types of boat.  Manufactured in Tollesbury, Essex, UK it is easy to install in place of an exisiting Chart Plotter, Autopilot or other electronic compass.  Autonnic have been making magnetic sensors to power the world of yachting electronics for over 50 years and now you can buy direct.


The Compass Sensor uses fluxgate technology to provide the most accurate magnetic heading converted to a digital signal,  to meet the requirements of all navigation displays and devices on board. The electronic unit is weathertight, allowing an optimal installation position inside or outside the hull.


  • Provides magnetic heading data
  • Vessel movement compensation
  • NMEA 0183 
  • Water resistant to IP68
  • Auto Calibration
  • Compatible with 3rd party displays and devices


Model A5041 Gyro Specific - Heading output is derived by additionally integrating the rate output from a MEMS yaw accelerometer or ‘gyro’ which is drift-corrected by a fluxgate magnetometer with pitch and roll compensation up to 45°.


Model A5024 Specific - The compass has a separate, dedicated output in Furuno AD-10 format. This is a proprietary 4 character serial format, which gives heading in degrees and tens of minutes.


Please click here to download the product datasheet


To find our more please visit our sensors product page


Compass Sensor NMEA0183