Quad divider, Video image divider

（1）Full screen display the time and date

（2）Motion detect alarm has 8 levels sensitivity and 180 area optional

（3）Picture in picture (PIP) optional: 1 sub-picture; 1 big 1 small two picture; 1 big 2 small 3 picture; 1 big 3 small 4 pictures, 4 equality pictures

（4）Picture in picture (PIP) has automatic switch function

（5）External alarm interface: high level or low level optional

（6）Automatic display the alarm pictures when there is motion alarm or external alarm

（7）Can freeze the big picture

（8）Record playback duplex operation

（9）Multiple quad and signal quad automatic switch

（10）NTSC/PAL compatible