... the same time, multipe units display.• Real time tracking, GPS position update; History review. Map search, Point of interest ... status display. ACC on/off, mileage, speed, battery, address, drivers ID, fuel, temperature, etc. • Online control of vehicles ( ... communication setting2. Two way message dispatching 3. Connect to GPS navigator for automatical navigating4. Fuel comsumption analysis chart5. 29 ...