It is a highly integrated SoC development board with a ceramic antenna and a high-performance BDS/GNSS multi-mode satellite navigation receiver. The main chip is the AT6558R satellite positioning chip, integrating a radio frequency front end, digital baseband processor, 32-bit RISC CPU, power management, and active antenna detection and protection functions. It supports multiple satellite navigation systems, including China’s BeiDou Navigation Satellite System (BDS), the United States’ GPS, and Russia’s GLONASS, enabling multi-system joint positioning. It complies with the NMEA protocol and accepts control commands via serial communication. Color: Black Material: PCB Type: GP-02-Kit / GP-01-Kit Package Contents: 1 x Module (Appearance may vary slightly between batches; functionality is unaffected) Note: Color representation may vary slightly due to lighting and display differences. Measurement tolerance: ±1–3 cm.