USD$ 16.31 (Dropshippers can also enjoy wholesale prices.)
How to Buy a Suitable Rear View Back Up Camera System?
Nowadays, rear view system mainly include wired and wireless
1. Wired system
A rear view system mainly consists of monitor, rear view camera, cables, remote controller and car lighter
a. TFT LCD Monitor
In the market, there are some different sizes of TFT LCD monitors, like 2.5", 3.5", 5" and 7". You may also see 5.6" or 6", but they are not the mainstream
2. How to choose suitable monitor?
It is up to where you will use the monitor, in truck, in car or in tractor? If used in your car, I sugget 3.5", because it is small, looks nice in car, and will not cover you eyes completely. If use a bigger monitor, it will make your viewing field before your car smaller. It is not safe for drirving.
If used in truck or tractor, 5"/7" is perfe
On the market, you can see many many 7" TFT LCD rear view monitors, and the prices are between 60 and 70USD. This price is not normal, it is too low to ensure a good quality, because they use second-hand screen, which costs little, and the inner PCB circuit is of disorder, many cables are not fixed well, and easy to loose. Because trucks will encounter extremely road situation, and the monitor must bear a great virbration
Meanwhile, when buying a TFT LCD monitor, you also need to pay attention to the power input range of it. You'd better choose one with a free power input between DC11~32V, which can protect your monitor from being burnt by the fluctuation of your car power
3. b.CRT monitor
It is black and white. And its volume is bigger, so CRT monitor is often used for truck and passenger bus. And the quality image is not as good as LCD monitor. So its cost is lower than LCD
Camera. There're mainly two kinds of chipset for camera, one is CMOS and the other is CCD
The image quality of CCD is better than CMOS, so its price is higher. But actually, as the development of CMOS technology, nowadays the image quality of CMOS has been improved, and is enough for car use. And the price different between CCD and CMOS is about 20USD. Night vision is very necessary for rear view camera, so while choosing a camera, please attention to the IR function
If used for car, license plate camera is more suitable, because it is no need to make any hole in your car, you just need to attach it on your license pate with screws
If used for truck, a shockproof camera is necessary. And the waterproof function is needed
Some ask what is the viewing angle of the camera? Is it 180 degree? It seems that the viewing angle is very important to a car rear view camera, I do not think so. 110 degree is enough. After all you do not use the rear view camra to take photo with others and not like a digital camera for photography. So do not stress the viewing angle, because you just need it to surveil such a small area behind your car
Cable/connector. This is very important, especially for truck use. In the market, many systems uses BNC/RCA connectors, all of these are not waterproof and can not resist virbration. So four-pin screw cable is an optimal one. It can be connected tightly, never loose, and is waterproof
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