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This article sheds light on Power over Ethernet (PoE) a technology that uses Ethernet cables to transmit power to electronic devices, how it works, its benefits and applications.
In this long article we explain the following: what are surveillance systems, what are its main components? camera types and specifications, camera (sensor/lenses) specifications, security camera signal & connectivity, camera housings and more.
Microphone non-linearity is recognized as a gateway for establishing secret communication channels and as a malicious backdoor for injecting hidden voice commands. In the previous article, Ultrasonic Jammers: All You Need to Know, some representative microphones jamming methods were explained - like RF jammers, audio jammers and ultrasonic jammers.