TR-900 is a 3G network OBDII dongle type plug and play tracker. It is designed as an easy installation AVL tracker capable of not only achieving GPS positioning but capturing OBDII diagnostic data directly from the vehicle as well. The dongle tracker itself is plugged directly onto the ODBII port available on all passenger vehicle made after 1998 to draw both power as well as receiving OBDII diagnostic data. The device is equipped with 3G network modules capable of connecting booth UMTS and GPRS networks. High sensitive G sensor is available on the device to produce G force values for evaluating harsh driving behaviors as well as impact alert reports. Other functions include, mileage accumulation report, over speeding alert, RPM over revving alert, coolant temperature alerts, MIL status alerts, diagnostic trouble code (DTC) capturing, and highly customizable event based protocol to perform various custom alert reports combining both ODBII data and GPS location data.