... , D1 video resolution 2. H. 264 video compression, Linux OS, dual stream 3. Standard industrial chassis design of host, small in ... size, easy to install 4. Dual SD card, support up to 64G/ hot plug and unplug 5 ... of monitoring when the vehicle booting. 7. Interface extension: 2*SD, 2*USB 2.0, alarm, RS232 etc 8. Voltage: DC9 ...