... CMS,VGA 2. 4CH D1 realtime 3. Remote view by IE,Mobile 4CH Vedio CCTV DVR Model:CK-A9004 ... by dragging the slider barBackup DeviceUSB,USB Movable HDD,Network,USB DVD -RWPre-alarm RecordingAbout 10 seconds ... ViewYESElectronic zoomYESLog record functionYESImage TourYESIR Remote control /USB MouseYESVideo Loss DetectionYESVideo AdjustableHue,Saturation,Contrast,BrightnessPassword ProtectionYESPower ...