Powerline Ethernet Adapters (Power modems)

A set of powerline ethernet adapters (minimum requirement is one pair) behave essentially like a pair of modems. A “MO DEM” is a modulator/demodulater. It translates ethernet signals (which computers, routers, access points….etc. use) into “something else” and then back to ethernet. “Something else” might be designed to travel over telephone lines, or coaxial cables, or laser flashes, or……whatever. Power modems transmit signal across the same wires that carry electrical current throughout the unit. They encode ethernet into high frequency low voltage pulses which another power modem sees as a string of 1’s and 0’s and reconverts to ethernet.

So:

• Plug a power modem into the ethernet cable (coming into the unit)
• Plug it into an electrical socket
• Plug another power modem into any electrical socket (on the same circuit breaker)
• Plug an ethernet cable into a second power modem (to attach to a router, computer, switch, etc.)
• Press the “synchronize” buttons

You now have a chain of devices that gives you ethernet at any electrical outlet. No big long internal cable to spoil the esthetics of your décor. One small cable from the point of entry to the nearest electrical socket still needed, obviously. The chief point of this technology is: “transfer signal from point of entry to someplace else without using internal ethernet cables”. Obviously, once you break the ethernet cable chain, POE will not function at the place where the router (‘someplace else’) happens to be.