Powerline Networking WiFi Extenders: How the Kits Work

The first adapter connects to your router and sends network traffic through electrical wiring to a second adapter. That unit can provide Ethernet, WiFi or both, depending on the kit.

Not necessarily. Connection quality can vary with the wiring, circuit layout, electrical noise and outlets used. Follow the kit's manual and test the intended sockets.

Manufacturers commonly recommend connecting adapters directly to a wall outlet, since some power boards and surge protectors can interfere with the powerline link. Check the manual for your specific kit.

It may be preferable when a repeater cannot receive a strong signal where it must sit. Powerline depends on wiring quality, while a repeater depends on usable wireless coverage between the router and extender.