The use of computer installation monitoring card has a relatively low overall investment. It is suitable for places familiar with computer installation, attended by professionals and with many functional requirements. The computer needs 24 hours to start; The use of embedded hard disk video recorder does not need professional knowledge, does not need to be on duty, and the operation is very simple, which is as convenient as using VCD;

And determine the monitoring range and image quality of each camera. First determine the number of cameras for monitoring, and then determine the lens monitoring range of the camera according to the specific situation: the distance from the camera to the monitoring point and the area to be monitored must be clear. As for the definition, we believe that the camera of 480 TV line is enough.

3、 Do you want night vision
If your monitoring equipment is installed in dark places such as corridors, hallways, aisles and warehouses, you can consider infrared night vision cameras. It should be noted that in addition to professional night vision or special customization, infrared cameras also need light on site. Under the condition of five fingers, the infrared distance will be doubled and shortened. If the site is a garden lawn, the infrared effect is worse.

4、 Direct wiring or wireless transmission
In addition to the high price, wireless network does save the trouble and unsightness of camera installation, but we need to pay attention to the problems of distance and obstacles. In principle, cement building materials will shorten the wireless transmission distance, while metal materials will completely shield the wireless signal. The transmitter (at the camera end) and receiver (at the host end) should be far away from other electrical appliances to avoid interference. If wireless network is to be adopted, there should be monitoring equipment with a price of more than twice. We recommend using wired transmission for installation unless necessary.

5、 Field monitoring and network monitoring you are determining the installation of the monitoring system
The monitoring installation should consider whether the network function is required, that is, if you need to monitor and control the monitoring site at any time on the Internet, you need to select the monitoring host with network function to avoid the lack of network transmission function after installation.