A Wavlink Wi-Fi Range Extender or WiFi Repeater works by picking up your current Wi-Fi signals, amplifying them, and then rebroadcasting them at a higher frequency. This allows for better reception in areas where there was previously poor reception.
Why do you need it?

Your home or office may have dead spots that are too far away from your router for it to reach with its current signal strength. A wifi repeater can be used to increase the area of coverage for your router so that every corner of your home is covered with strong internet access.

Setup Steps

You can use it as a wireless repeater to increase the coverage of your existing network or as an access point to create a new network. Simply follow the instructions for the wavlink extender setup