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OOSSXX surveillance systems usually include multiple devices to realize video surveillance and security monitoring. Below is an introduction to the common surveillance system devices and their functions:

Surveillance camera: a device for capturing video images. It can be divided into monochrome and color cameras and has different performance characteristics.

Lens (Lens): Used to adjust the camera's field of view to obtain the correct image. This includes fixed-focus and zoom lenses.

Infrared Illuminator (Infrared Illuminator): Provides infrared lighting required for nighttime shooting and improves the camera's night vision.

Camera Cases and Brackets (Camera Cases and Brackets): Provides support and protection for your camera from bad weather and man-made damage.

Pan-Tilt-Zoom Controller (Pan-Tilt-Zoom Controller): Remotely control the camera pan and adjust the lens focus and aperture.

Microphone: Collects high-sensitivity voice in real time to obtain audio information.

Monitor (Monitor): Used to display the video image obtained from the camera, there are various sizes and types of monitors to choose from.

Sequencer (Sequencer): Switches between multiple camera images and corresponding audio signals in sequence, and automatically displays each image.

Video Image Processor (Video Image Processor): Can display multiple images simultaneously on a split screen, or automatically switch to the relevant camera image in response to an alarm input.

Matrix Switch Controller (Matrix Switch Controller): Controls the input and output of video signals and manages multiple surveillance devices and alarm systems.

Professional Recorder (DVR/NVR): Used to record and store surveillance camera images and audio signals for later playback, analysis and archiving.

These devices work together to provide real-time monitoring, recording, storage and security management capabilities, and may involve different devices and configurations according to different application scenarios and requirements.