Power over Ethernet is perfect for powering low-to-medium power devices like cameras, wireless access points, intercom systems, and keyless entry devices that can make use of both power and connectivity in a single cable.
Also Powerline Ethernet, many possible scenarios are possible since we don,t know all the details
Powerline? In other words, "BPL" or "Broadband over Power Line?" I thought that was all DEAD. It was STUPID technology and caused TREMENDOUS radio interference.