Function:GSM Quad-band frequency(global use)Wide input voltage range: DC9-24VBulid-in vibration sensor， smart anti-theft.Build-in back-up battery(optional)，support illegal main power cut-off alarms.SMS&Web portal tracking available.Moving alarm and monitoringSpecification:GMS Frequency: 900/1800MHz or 850/1900MHzGPRS: Class 12，TCP/IPVoltage range: DC 9-38VStandby Current: ??0.2mALBS Accuracy: 10m(2D RM)Working Temperature: -2??C-+70??CWorking Humidity: %20-80%RHDimension: 50.0(L)*35.0(W)*1.0(H)mmNet Weight: 26gInstallation:Check the product， open the package， and check product model and accessories. If there is something wrong or missing， pls contact the distributorSIM card choice， terminal need to insert a GSM SIM card， SIM card choice pls refer to the dealer's opinionSIM card installation， use a hand to uncover the terminal cover， uncover SIM card slot cover， the SIM card metal face down into the SIM card slot， then fasten card slot cover， and finally put on the back shellPackage includes:1 x GSM/GPRS Tracker1 x Power 3P Line1 x English User Manual