... space alarm function, GPS overspeed/ low speed alarm, G-sensor alarm, motion detection alarm12.RS232, RJ45.ODM expansion ... design; Support GPS, G-sensor, Gyro-sensor module13.Support 3G transmission: WCDMA, CDMA2000, ... support built-in WiFi,(GPRS, EDGE customizing).GPS ,G-sensorbuilt-in G-sensor, support external GPSvideo storageSD Card storageSupport 1pc ...