Functions:
1.Car staring:Display front/rear/left/right four camera image in quad-split
mode and start to recording. 
2.Left turning: Display pictures in tri-split mode with left,front and back view.
Right turning: Display pictures in tri-split mode with right,front and back view.
3.Reversing: Display Rear view camera and 360 around simulation panorama view.
4.Warning lamp turn on:Display pictures in tri-split mode with front, right, and left view.
 5.Car stop:could set 1-24 hours delay recording after car parking. (need custom-built)
 
Specifications 
1.Operation language: English/Chinese
2.Operation interface: Graphical menu operation interface(OSD menu) for IR remote control
3.Video input: 4-ch video input 
4.Video output: Single channel composite video output 
5.Display mode: Single frame/three frame/four frame display 
6.Video standard: NTSC/PAL 
7.Video compression: H.264 Main profile
8.Recording mode:automatical recording/detect recording/manual recording
9.Recording channel:4channels(1-4 channels optional)
10.Records playback:available
11.Data storage:support 4G~32GB SD card
12.Software upgrade: Support SD upgrade 
13.Working voltage: 12V DC 
14.Working current: 400mA
15.Working temperature: -20—80°C