... of management.Detailed description:It is based on GSM/GPRS(850/900/1800/1900MHZ)wireless telecommunication internet and GPS satillite global position ... ,Data logging26,Forward third parties message to authorized phone number and charge inquiry27,Configure parameters by USB28 ... directions: Vehicle fleet/logistics/Vehicle rental Technology parameter:1,GPS chip: SIRF3chip 2,GPS sensitivity: -159dBm ...