Track by SMS/GPRS Track on Demand Track by Time Interval Track on Mobile Phone Internal 4MB Memory DescriptionAVL GPS Tracker for Car and Fleet Management 4M bytes Logger Motion Sensor Backup Battery Inputs/Outputs/Analog InputsFeatures:Track by SMS/GPRS (Meiligao Protocol)Track on DemandTrack by Time IntervalTrack on Mobile PhoneInternal 4MB Memory for LoggingInbuilt Tremble SensorInternal ...