... .264 real-time high compression, support dual stream network transmission Wholesale 4 Channel CCTV Security Standalong DVR , 4CH Standalone DVR , 12VDC ... : ModelJD-DVR7504SystemMain ProcessorHigh performance embedded microprocessorOperating SystemEmbedded LINUXSystem ResourcesPentaplex function: live, recording, playback, backup & remote accessControl ModeFront panel, USB mouse, IR ...