OBD O is a positioning device, which can realize functions such as electronic fence, remote tracking, and overspeed alarm. The terminal can meet the needs of relevant scenarios such as car monitoring, car hailing, and car rental. The OBD O is 47x20x43mm in size, easy to install and fix. The product has a built-in 60mAh rechargeable battery, and it can continue to send positioning data to the platform terminal after power off, dismantling the device can trigger functions such as disassemble alarm.