A:AnswerI do also but it has nothing to do with your electrical wiring. It is to eliminate having to run an ethernet through your home from your device to your modem.
A:AnswerAccording to TP-Link, these will be compatible with any other adapters that conform to the standard. I use only TP-Link myself, so I cannot speak from experience.
A:AnswerThe unit itself doesn't emit a wifi signal, but you could use the ethernet bridge to supply a connection to a wifi router that's been set as a repeater.
A:AnswerMy previous answer is wrong. There is no transmitter/receiver. Both adapters are interchangeable. Not sure why I worded the original answer that way. It's early and I have not had a coffee yet!