Surveillance cameras belong to the category of security electronic products. Because it is a security product, the manufacturer must have a security product production license, and the sales and installation need to be filed in the local public security technical defense office. Engineering installation enterprises require technical protection installation grade certificates, which can be handled at local municipal and provincial levels.
Surveillance camera is a quasi-camera used for security. Its pixel and resolution are higher than computer video head, but lower than professional digital camera or dv. Most surveillance cameras are just a single video acquisition device, and there are few data storage functions. Surveillance cameras are mainly divided into gun type, hemispherical type and high-speed spherical type in appearance. There are also differences between analog monitoring and IP network monitoring, which are widely used in security fields such as schools, companies, banks, transportation and safe cities.