Up to 4/8/16 channel HD-SDI video 1080p realtime live view Max 200/240fps@1080p HDMI / VGA / TV simultaneous video output ModelDH-DVR0404HD-SDH-DVR0804HD-SDH-DVR1604HD-SSystemMain ProcessorDual-core embedded processorOperating SystemEmbedded LINUXVideoInput4 channel, BNC8 channel, BNC16 channel, BNCStandard1080P(25/30) / 720P(25/30,50/60)AudioInput4 channel, BNC8 channel, BNC16 channel, ...