There are two classes of surveillance cameras: analogue and digital (IP). Here we briefly note the basic differences between the two types.
Analogue CCTV cameras have recently lost their position in the modern market, but still have the benefit of affordable prices. They do, however, require more cables (from 2 to 3) and additional connectors. Analogue cameras are poor in functionality, which cannot be said about the digital class.
IP cameras offer many more features. Modern IP cameras have extensive functionality: speakers, microphones, integrated analytics, various detectors, and support for cloud technologies. Installation is also simpler – for a video signal and power supply, one cable is enough thanks to PoE technology.