GPS Tracking 1)SMS&calling location; 2)Shock sensor alarm; 3)GPS location;GSM web; 4)remote engine off by SMS; ... speed alarm, emergency SOS help, these functions are useful. With GPS and GSM, the tracker sends the present location information through ... location information & location map will display on your mobile phone.It can be used as tracking cars, company vehicles, buses, taxis, trucks, outside ...