Cameras have the following major categories: analog, coaxial, and network, each of which is divided into indoor and outdoor. The indoor version has a much higher definition than the outdoor version at the same price.
There is also the choice of the focal length of the camera. Many people often say that my camera can see how far and how far it seems to be very powerful. In fact, everyone has a misunderstanding that seeing far is not necessarily the focal length of the same camera. There will be a lot of different focal lengths. Generally, the focal length of the camera is 3.6~12mm3. The angle of 3.6mm is large and the distance is close. You can choose 3.6~4mm according to the situation. Don’t try 12mm. Your unforgettable,
Finally, there is the issue of storage and viewing. If you choose cloud storage, you can go to the APP to see the price. In general, a camera will cost about ten yuan a month on average, and it is more convenient to choose the storage time by yourself. If you use a video recorder with hard disk storage, you need to choose the size of the hard disk according to the resolution and the number of cameras. Generally, 500G for the four cameras is good. Finally, in fact, one week is really enough, nothing Special requirements are enough.