... (LBS—location based service)12. LED Advertising Screen, RS232 Printer, Temperature sensor, RFID (optional) Positioning and tracking: through ... with the mobile cell phoneAuto track: Auto track by SMS or online positioning platform; Mileage statistics; ACC checkingCutting ... about 3.5 hours)AccessoriesDevice, Connecting cable ,GPS antenna ,GSM antenna, Engine controller, SOS button, Microphone, Camera, LED ...