... and 500G hard disk(ELP-DVR6037). 2). 4 X 1/4 Color Sharp CCD,420TV Line waterproof Camera (ELP ... 1024*768, 600:1, Visual angle: 160 degree, 4:3 CCFLOperation systemLINUX OSVideo compression formatMain profile H.264Video input4 ... RCA input, 1ch RCA outputMultiplex operationLIVE display, recording, network transmission recording, backup, mobile phone surveillance simultaneouslyDisplay resolutionPAL: D1( ...