... 576 Display Modes Full screen, multiple screen, Sequence display,exchangable channel display. Audio 4CH Recording Modes Manual, Continue, alarm, motion ... D1:PAL 50fps/720×576 Watchdog (LED indicator) Power, channel, backup, network Event Modes Alarm trigger, video detection ... O.& N.C. High Playback Speed × 2, × 4,× 6, single frame playback Playback Searching Date & time, Manual recorder time list ...