DVR with VGA,4-channel, H.264 2 channel alarm input, 1 channel ... 3. Adjustable frame from 0.1f/s to 25f/s 4. 2 channel alarm input, 1 channel alarm output 5. ... mouse, front panel, remote control, network 7. USB interfaces 8.4 channel playback or single channel playback 9. Support LAN, WAN ... Video Input4 Channel, BNC , 1.0V p-p/75 ohmVideo Output2 Channel, BNC, 1.0V p-p/75 ohm, VGA x 1Audio Input2 ...