Surveillance cameras work by capturing images or video footage of a specific area and transmitting that data to a monitor or recording device for viewing or storage. These cameras use sensors to detect changes in light and convert these changes into electrical signals. The electrical signals are then processed by a digital signal processor, which turns them into a clear video image.
Surveillance cameras can be either analog or digital. Analog cameras capture footage in a continuous stream of video, while digital cameras convert the video signal into digital format for easier storage and manipulation. Digital cameras also often have better image quality and can be remotely accessed and controlled over a network.
Surveillance cameras can be either wired or wireless, with wired cameras using cables to connect to a power source and recording device, while wireless cameras transmit data using radio signals or Wi-Fi connections. Some cameras also have features such as night vision, motion detection, and pan-tilt-zoom capabilities for greater coverage and control.
Overall, surveillance cameras play a vital role in monitoring and ensuring the security of various environments, from homes and businesses to public spaces and government facilities. Their advanced technology and features make them effective tools for surveillance and deterrence against criminal activity.