CCTV cameras, or Closed-Circuit Television cameras, are devices used for surveillance and monitoring. They capture video footage in real-time and transmit it to a specific set of monitors or recording devices. These cameras are commonly used in public places, businesses, and homes to enhance security and deter criminal activity. CCTV systems can vary in design and functionality, including options like dome cameras, bullet cameras, and PTZ cameras (pan-tilt-zoom). Many modern CCTV cameras also offer features such as night vision, motion detection, and remote access, allowing users to view live footage from their smartphones or computers.