... & Alarm HDD Car Black Box with 3G and GPS, Can Work With 4pcs Cameras HDD Car Black Box* H.264 Vehicle ... )File formatAVI INTERFACESensors1 speed sensor, 1 ignition sensor, 3 sensors Com port2 RS232 port, 1 RS485 portNetworkRJ45, 10M/100M EthernetWANAvailable; Support ... available): HDD Car Black Box with 3G and GPS, Can Work With 4pcs Cameras