Follow is the instruction of 7 inches rear view system:
1. Can be connected with three cameras for Front View/Side View and Rear View Three/Two/One camera optional
2. Gives you eyes in the back of your head for blind spots
3. System is automatically activated when back up
4. Night vision, video automatically change to rear view when back up
5. Display with three video frequency input (AV1, AV2, AV3) Automatic/manual switcher
6. Multi-languages of display available: English, French, Chinese, Russian, Italian, Spanish, Portuguese, German and Arabian
7. Full function wireless remote control
8. Excellent high resolution picture quality even in low illuminated conditions
9. Especially designed for BUS and vechile use
10. Audio function optional
11. Good night vision(18 pcs LED) and waterproof(IP67)

Specification of 7? /st1: Chmetcnv> LCD monitor:
1. Pixel: 1440x234
2. Input power: DC10-15V
3. System: PAL and NTSC
4. Respond time: 30ms
5. Shock resistant, designed specifically for mobile use
6. Picture display format: 4: 3/16: 9
7. Shock resistant, designed specifically for mobile use
8. Five languages OSD menu: Chinese, English, Russian, German and Arabic
9. The display with two video frequency input (AV1, AV2, AV3) Automatic/manual switcher
10. Includes flat surface / in-dash and adjustable universal mounts
11. Front panel controls with on-screen menu
12. Operation temperature: - 30? ~+70?

Specification of camera: Day and night CCD camera
1. 1/3 CCD sharp sensor
2. Waterproof IP/67
3. System: NTSC: 510x492, PAL 500X582
4. Resolution: 420 TV Lines
5. Minimum Light: 0 Lux(LED ON)
6. Electron shutter: 1/100, 000(s), ON/OFF
7. S/N ratio; More than 48 Db
8. Video output: 1Vp-p 75O
9. Voltage: DC12V(+/-10%)
10. Waterproof: IP67

Control Box:
A) Voltage: DC12V(+/-10%) OR DC24V(+/-10%)
B) Can connect to three cameras: Camera 1, camera 2, camera3(or DVD)
C) Video distributor and booster to maintain image
D) Auto switcher for video signal
E) Automatically switches to reverse image when back up
F) Audio/Vedio output (RCA terminal)
G) Power consumption: 3W
H) Video gain: 0-13dB
I) Frequency Effect: 0-6MHz