... 264 Compression 4CH All-in-one Digital Video Recorder Features:Creative all-in-one design, screen panel ... playback, network can be operated at the same time.Specifications: Model4 CHANNEL8 CHANNEL Operation SystemEmbedded Linux Operation ... 264Audio CompressionADPCMRecording ModeManual, Timing, Alarm, Motion detectionSearch ModeBy time, event, channel, logBackup ModeNetwork download, USB backupVideo ...