This is a Raspberry Pi GNSS HAT which supports Multi-GNSS systems: GPS, BDS, and QZSS, with advantages such as fast positioning, high accuracy, low power consumption, and so on. It is an easy way to enable global positioning function for your Raspberry Pi. Features Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano Supports Multi-GNSS systems: GPS, BDS, and QZSS EASY™, self track prediction technology, help quick positioning AlwaysLocate™, intelligent controller of periodic mode for power saving Supports DGPS, SBAS (WAAS/EGNOS/MSAS/GAGAN) UART communication baudrate: 4800~115200bps (9600bps by default) Onboard battery holder, supports ML1220 rechargeable battery, for preserving ephemeris information and hot starts 4x LEDs for indicating the module working status Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32) GNSS Specifications Band: GPS L1(1575.42Mhz), BD2 B1 (1561.098MHz) Channels: 33 tracking ch, 99 acquisition ch, 210 PRN ch C/A code SBA: WAAS, EGNOS, MSAS, GAGAN Horizontal position accuracy: Autonomous: