CWT5016 Support GPS/GSM/GPRS, with 4 Temperature sensor, 4 Ad inputs, 4 Digitial inputs, 4 Digital Outputs, gps tracking system. CWT5016 ... 24 hours.GPS tracking + temperature monitor + data acquisition + GPRS transmission + sms alarm + data loggerOverview GPS Data & Measurement LoggingUpload data & GPS information ... low water/oil tank level gps tracking system (with temperature sensor, I/O controll)