C9-A is a high-precision 3D electronic compass launched by Micro-Magic Inc Hi-Tech Company, which introduces advanced 3D compensation patent technology from the United States, allowing accurate heading data to be provided even at a product tilt angle of ± 40 °. The product has a small size, low power consumption, and can be applied in many fields such as antenna stability, vehicles, and system integration. Its high seismic resistance and reliability also enable the compass to work normally in extremely harsh environments, making it more suitable for today's miniaturized high-precision measurement and integrated control systems.