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What are CCTV cameras? CCTV cameras, or closed-circuit television cameras, are video cameras that are used to transmit a signal to a specific place, on a limited set of monitors. They are often used for surveillance and security purposes, and can be found in a variety of settings, including public places, businesses, and private homes. There are many different types of CCTV cameras, including: Dome cameras: These cameras are mounted in a dome-shaped housing, which makes them difficult to see which direction they are pointing. They are often used in retail settings. Bullet cameras: These are long, cylindrical cameras that are typically mounted on a wall or ceiling. They are often used for outdoor surveillance. PTZ cameras: PTZ stands for "pan, tilt, and zoom," and these cameras are able to move horizontally, vertically, and zoom in and out. They are often used in large or complex surveillan