A typical television monitoring system mainly consists of two parts: front-end equipment and back-end equipment. The front-end equipment is usually composed of cameras, manual or electric lenses, gimbals, protective covers, listeners, alarm detectors, and multifunctional decoders. They each perform their own duties and establish corresponding connections with various devices in the central control system through wired, wireless, or fiber optic transmission media (transmitting video/audio signals and control, alarm signals). In actual television monitoring systems, these front-end devices may not be used simultaneously, but cameras and lenses are essential for capturing images at the monitoring site.

Visual monitoring equipment Visual inspection equipment