1\Support bothGPS / GSM station positioning ways. 2\Support SMS/GPRS/Internet Network data transfer (GPRS/Internet instructions in CD enclosed) 3\Support GPRS on-line and the line re-connected automatically. 4\Support work based on existing GSM/GPRS network... 5\Support configuration by remote terminal. 6\Standby current is only 80mA. 7\Support for point-to-point, point to group, group-to-group monitoring. 8\Set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety.