Which components are essential for a basic CCTV system?

The essential components for a basic Closed Circuit Television (CCTV) system are cameras, a monitor, and a recording device.

Cameras are crucial as they capture the visual footage that is to be monitored or recorded. The monitor allows for real-time viewing of the feeds coming from the cameras, enabling immediate oversight of monitored areas. The recording device is necessary to store the captured footage for future review or analysis, which is vital for security purposes.

In the context of a basic CCTV setup, these three elements form the core infrastructure needed to establish a functional surveillance system. They work together to ensure that visuals are captured, displayed, and preserved, fulfilling the primary objectives of monitoring and security. Other components listed in the other options, while they may enhance a security system, are not fundamental for the basic functionality of a CCTV system.