Features:Main chip: U-BLOX M8030 KTBuilt-in TCXO, which maintain good consistency in the temperature of -40 ? ~ +85 ?.GPS L1 C/A: The antenna built-in high-quality ESD protection [TVS tube] to ensure ESD keep 8KV above [Air discharge].SBAS L1C/A: It?s easy to adjust the baud rate, the default is 9600bps, and it supports command adjustment and internal adjustment. QZSS L1C / A: Support wide area differential GPS enhanced system in default. [S129, S137?. Wide area enhanced satellite.GLONASS L1OF: Built-in PATCH ANTENNA. GALILEO E1B/C1: Built-in magneto resistive sensor, I2C port output.BeiDou BD2[Option]: GPS and Beidou dual-mode positioning are supported in default.Tracking channels: 72Product Size:41.5*39.6*5.3mmPositioning performance?? Autonomous positioning: 2.5m [average]? Auxiliary positioning: 2m [average], with SBAS assistance.? Drift: <0.02m/s ? Timing accuracy: 60ns? Reference coordinate system: WGS-84 ? Maximum altitude: 50000 meters [Pay special attention to atmospheric temperature when flying at high altitudes, and you need to turn on the flight mode]? Maximum speed: 500m/s ? Acceleration: <4gElectrical performance:Tracking sensitivity: -161dBmCapture sensitivity: -148dBmCold start time: 29s [average]Warm start time: 28s [average]Hot start time: 1s [average]Interface electrical performance:Wide voltage range: the main power supply is +3.0~5.5V UART port: GPS data; I2C port: magnetic compass data [HIC5883L]GPS output data baud rate 9600bps, I2C port ADDR: 7bit 0x1E, 8bit_read 0x3D, 8bit_write Ox3EPackage Including:1 X GPS BDS C