Speeding alert: Send SMS to the unit to start the motion alarm function. When the vehicle is speeding, the unit will send the speeding alarm to all authorized numbers. Geo-fence: Set a geo-fence for the unit to restrict its movements within a district. The unit will send a message to all authorized numbers when the district is violated. Restart the unit: Send SMS to resume the unit's default. Auto track: You can set the auto track by SMS or the online placement platform. Mileage statistics; ACC check; cut off power and alarm. Compatible with the original anti-theft alarm: It will send SMS alarm after the original anti-theft warning alarm. Blind report after the accident: when there is no GSM signal, auto storage of location data. After GPRS has GSM signal, then report the GPRS data. Fuel testing: if you have your own online placement platform, you can use and display the car's fuel on the computer. Connects, you can monitor the sound around 5 meters.