... /by cell phone ·Over-speed alarm, Low power alarm, Geo-fence alarm ·Roaming feature to save cost ·Control or detect the ... time Special Features: ·Support commands to device via GPRS ·SMS Link for google map ·Sending GPRS data to IP or DNS ... auto GPS /GSM/GPRS/AGPS tracker, engine on& off, geo-fence control,over speed&low power alarm, mileage calculation