... remote operation 3.3G Wireless network Car security DVRIntroduction1,Support 3CH video. Video is stored by SD card, which is ... interfaceVideo input3CH video input, NTSC/PALVideo output 3CH output, NTSC/PALAudio input 3CH audio inputAudio output1CH audio outputCable networkRJ45,1/100M ... CONSTRUCTION RECOMMENDED BRANDSCertificate of Utility Model PatentHarmony Innovation Cup 3CH Car Security DVR