S2 is a 4G mobile positioning terminal designed for UAVS, which integrates 4G wireless communication technology and GPS/BDS satellite navigation and positioning technology,  adopts industrial high integration full built-in antenna design, built-in 9-axis sensor, with intelligent, power-saving, abnormal-wake-up working characters. It supports GPS/ Beidou positioning, low power alarm, AGPS quick positioning, UAV posture detection, flight trajectory breakpoint transmission, UAV heading Angle acquisition, remote FOTA firmware upgrade, remote configuration and real-time monitoring. It is equipped with the global positioning service platform to realize the real-time acquisition, tracking and positioning of UAV data.