1.4CH Audio Input 2.remote Network 3.multi- ... Search6PlaybackPlayback Channel1CH-4CHPlayback ResolutionD17Store &BackupSpaceAuido: 28.8Mb/hour +Video: 25-450Mb/hourStoreHDD, SD Card, NetworkModeHDD backup, ... p,75ΩVideo Output1CH BNC 1.0Vp-p,75Ω,1CH VGA output(Support simultaneously output)Audio Input4CH RCA ... without HDD)Daytime Snapshot 4-CH Video and Audio Input DVR For Mobile Surveillance System