4CH video inputs and 4CH audio inputs.It can support TV, VGA, Alarm, PTZ and USB Record. Name :CCTV DVR4004Feature: New standard for professional DVR with high performance and competitive price. H.264 compression algorithm ideal for standalone DVR. Realtime live display up to 4 camera with 720P high definition. 100/120fps for CIF realtime recording, support HD1,D1 non realtime. Dual encoding ...