... .8CH DVR with 500GB HDD 4.Mobile view 8CH IR Varifocal Camera System Home Security Camera System---CLG-4408TFeatures:1 ... channels RCAAudio output1 channel RCAMultiplex operationLive display, recording, network transmission, recording, backup,mobile phone surveillance simultaneouslyDisplay ... USB disk backup, moved hard disk backup, network backup, backup by files,backup by timeRecording diaplaySpecial ...