A Wi-Fi Extender is an accessory that can help you expand your existing Wi-Fi network, when your primary router can’t cover the entire house. It can be an effective way to improve your Wi-Fi speeds without paying for a better internet plan. It works by receiving your existing Wi-Fi signal, amplifying it and then transmitting the boosted signal.
When should you use a Wi-Fi Extender?
If your Wi-Fi signal is strong but struggles to reach far enough in your home, then consider a Wi-Fi extender or Mesh Wi-Fi if your home is large with multiple floors.  This will help your signal coverage to improve your wireless internet.