... , use for real time fleet management. New! GPS/GPRS/GSM vehicle dispatching and tracking device, use for real time fleet management ... 118 * 78 * 30mmMain unit weight: 0.25kg** Locate and Track On receipt of GPS signal, the GTD calculates the position, time, velocity ... from door, shock, fuel, oil, breaks, handbrakes, RPM, engine and other frequent events, control center operator can sent out command ...