... , altitude, battery voltage, charging status, number of satellites, the length of the GPRS string, GSM ID (includes MCC, MNC, cell ID ... .4)There is shock sensor built in TK106, the unit will send an alert to the user at once when it been ... For auto tracking,you don't need to send the coordinates if the moving distance is less than 50 meters .7 ... monitor any remote targets by SMS or gprs at the same time