... SIM card is currently attached to;Odometer; Connect serial port devices such as camera, DVR, LCD, barcode ... inputs, 4 digital outputs, 2 serial inputs and 1 mini USB port; Set parameters via mobile phone ... 15 metersGPRS ProtocolTCP/UDPPosition Accuracy10-15 metersI/O Port 2 switch input ports, 2 analog input ... input ports, 4 digital output ports, 2 serial input ports and 1 mini USB portMotion SensorBuild ...