In order to bring light into what truly means CCTV, experts have prepared a short article on this subject for you. First of all, CCTV indicates the initial letters of three English words: Closed Circuit Tele in Vision. The meaning of the phrase can be freely translated as a closed television circuit. It is closed because the signal from the cameras is transmitted to the closed respectively. A significantly limited number of users compared to conventional broadband, which is available to virtually everyone. CCTV images are seen only by the person who is authorized to do so. With กล้องวงจรปิด you can have a lot of solutions.
It is a relatively archaic abbreviation that is nowadays pushed out by the concept of an IP camera. However, IP cameras are a subset of CCTV devices. CCTV itself has been used in connection with security cameras. The official first camera system (CCTV system) was installed in 1942 in the then Nazi Germany. The cameras were followed by a short-range V-2 rocket launch on a rocket test base.
The equipment was sold to the commercial market in 1949 but did not expand until the 1980s. Prices were high. After 2010, prices of CCTV input products can be reduced cameras and additional devices. The high-quality camera system has thus become affordable for a wide range