... , 4 Digitial inputs, 4 Digital Outputs, gps tracking system. CWT5016 gps tracking system has been designed as a cost effective, low power ... and upload intervalBuild-in High performance GPS module, Using NMEA protocol.Report Lat and Lon, Speed by SMS or GPRS via ... /tank positionAlert on low water/oil tank level gps tracking system (with temperature sensor, I/O controll)