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Power over Ethernet (PoE) is a transformative technology that allows a single network cable to transmit both data and electrical power to connected devices. In the context of surveillance, this means an IP security camera can be powered up and connected to the network using just one Ethernet cable. This eliminates the need for a separate power outlet near the camera, drastically simplifying installation, reducing costs, and increasing placement flexibility.

In Local Area Networks (LANs), UTP is the standard for connecting workstations, printers, servers, and switches. In residential settings, it connects routers to modems and distributes internet access throughout the home. The rise of Voice over IP (VoIP) telephony relies entirely on UTP cabling to transmit voice data. Furthermore, modern security systems use UTP for IP cameras, often leveraging Power over Ethernet (PoE) to deliver both data and electrical power through a single cable, simplifying installation dramatically.

Network cable gauge, or AWG, defines wire thickness. A lower AWG number means a thicker wire, which improves performance and heat dissipation for applications like PoE.