GlobalSat GTR-129 vehicle - asset GPS tracker support the following communication protocols: "SMS - accept and send commands by SMS - TCP/UDP - send data packet in real-time to a Tracking Management Platform", depending of need can use each communication method. GTR-129 of GlobalSat can send to a predefined mobile phone the following scheduled SMS alerts: (low power alert, over speed alert, movement alert), with these function protect your vehicle or mobile asset any time. GlobalSat GTR-129 allow that you update firmware or change configuration parameters through (OTA - Over the Air) function, thanks to this feature you can save costs in technical services. You can setup some virtual geo-fences in your GTR-129 GPS vehicle tracker of GlobalSat and receive the exact "Geo Location" when the vehicle or mobile asset cross the predefined virtual geo-fence. GlobalSat GTR-129 is a good alternative for Fleet Management requirements and any type of vehicle tracking or for mobile assets location that needed real-time control.