... -SDVR002MIC-SDVR004 VIDEOVIDEO INPUT1-Channel2-Channel4-ChannelVIDEO OUTPUT1 channel, 1.0V, p-p, 75Ω, BNCVIDEO FORMATSupport PAL/NTSCVIDEO ... device(memory stick or hard drive)FILE FORMATAVI INTERFACESENSORS1 speed sensor, 1 ignition sensor, 3 sensors for brake, return etc ... .COM PORT 2 RS232 port, 1 RS485 portNETWORKRJ45, 10M/100M EthernetGPSSupport GPS receiver(optional), can ...