DVR with VGA,4-channel, H.264 2 channel alarm input, 1 channel alarm output DVR Details:1. H.264 Compression2 ... s 4. 2 channel alarm input, 1 channel alarm output 5. Multi recording modes:manual, timing, alarm, motion detection6. Multi control modes ... : mouse, front panel, remote control, network 7. USB interfaces 8.4 channel playback or single channel playback 9. ...