The Autonnic Compass Sensor uses fluxgate technology to provide the most accurate magnetic heading, meeting the requirements of all navigation displays and devices on board. The electronic compass unit is weather tight, allowing an optimal installation position inside or outside the hull.  The compass works by taking the magnetic heading and converting it into a digital signal for use by chart plotters, Autopilots, AIS systems and other electronic devices onboard.

In the A5041 gyro model, heading output is additionally derived by 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°.