... which set multiple functions of accurately positioning,security, monitoring surveillance, emergency alarms and track Product Description: model:GPS103-AGPS ... areas of management.Detailed description:It is based on GSM/GPRS(850/900/1800/1900MHZ)wireless telecommunication internet and ... button on the device11,Input Power: 12V-24V DC12,GSM/GPS LED indicator13,Authorized number added and deleted function14, ...