... 4 CCTV Cameras. Combo DVR specification: Main specification featuresSpecific descriptionLCD liquid crystal display15" color LCD, 1024*768, 600:1, Visual angle: 160 ... BNCAudio input/output4ch/8ch RCA input, 1ch RCA outputMultiplex operationLIVE display, recording, network transmission recording, backup, mobile phone surveillance simultaneouslyDisplay resolutionPAL ...