CARSCOP upgrade the T-Box TCP/IP communication protocol to V5.1, this upgrading mainly add the OBD diagnostic instruction and Wifi hot pot control instruction, it is more easy to test the T-Box and vehicle, the new OBD instruction can reply the vehicle VIN number, DTC fault code, SIM card CCID number, software version in the device, GPS and 2/3/4G signal strength, IP and Port, device password, authorized phone number, etc. OBD information also Including: speed, tacho, mileage, fuel quantity, voltage, fuel consumption and other engine parameters, WiFi control is mainly the setting of WiFi hotspot switch, password, hotspot name, etc. For details of the protocol, please contact our sales.