CCTV stands for Closed Circuit Television. It is a system in which video cameras are used to transmit a signal to a specific set of monitors or video recorders. The term "closed-circuit" indicates that the video feeds are not publicly distributed but are monitored for surveillance purposes. CCTV systems are commonly used for security and surveillance in various settings, such as banks, stores, airports, and public spaces. The cameras in a CCTV system can be fixed or pan-tilt-zoom (PTZ) cameras, and the footage can be viewed in real-time or recorded for later review. Overall, CCTV is a crucial tool for monitoring and maintaining security in both public and private spaces.