... Assets,Use for School bus, logistics project Description: ·Support single location and continual tracking ·Over-speed alarm, Low power alarm ... Features: 1.Can built-in RFID Reader with 2.4G RFID tag, SD card record (optional) 2.Can connect external RFID Reader, Cameras, ... output ports, 4 serial ports and 1 mini USB port GPS tracker,school bus tracking system,built-in RFID Reader with 2.4G RFID tag,