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4O3A Signature - Azimuth Magnetic Sensor
GS820 Transmitting Magnetic Compass (TMC) - AMI Marine
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Good Accuracy Digital Magnetic Compass 3D Pitch Roll Azimuth Modbus or Hex Protocol Heading Sensor Yaw Sensor RS232 RS485 Ttl Dcs456c Dcs456m - China Magnetic Compass, Digital Compass | Made-in-China.com
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Triple fluxgate sensor - magnetic compass
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