How much does it cost to install an ordinary surveillance camera?

The computer can be used, and then you need to add a video capture card (probably 300 yuan), the size of a computer graphics card, and plug it into the computer. Then, if you want to see human beings clearly, you need to use at least 600-line cameras (probably in 500 yuan), and then you usually have to charge 200 yuan for installing guns. If the distance is not far, you can contract materials. It should be 1000 yuan. I have small change. All the above are market quotations, so it will be more cost-effective to install it yourself, if the installation is not difficult.