The number of cameras that can be connected in a DVR (Digital Video Recorder). 4 Channels DVR=4 Analogs cameras. You cannot connect 5 cameras in a 4 Channel DVR.
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What size hard drive do i need for 4 channel DVR?
The size of hard drive needed for 4 channel DVR will depend of how long you want archive your recorded videos. 500 GO can be used for 4 channel DVR.
4 Channel Security DVRs for recording analog CCTV or HD CVI security cameras. Up to 2 Year Warranty.