... sec ~ 30 min9.Support insufficient disk space alarm function, GPS overspeed / low speed alarm, G-Sensor alarm, motion detection ... alarm10.Support GPS, G-sensor, Gyro-sensor module11.Support 3G wireless transmission: ... PortRS232 for remote control; RJ45 for LAN.GPSYes, built-in GPS moduleWireless TransmissionGPRS, EDGE, CDMA, WIFI, 3G (EVDO) optional. ...