The TP-Link TL-WA850RE is a Wi-Fi range extender that is designed to boost the wireless signal and extend the coverage of your existing Wi-Fi network. It works by receiving the existing Wi-Fi signal from your router and then rebroadcasting it to areas of your home or office where the signal is weak or non-existent.
To set up the TP-Link TL-WA850RE, you simply plug it into a power outlet within range of your existing Wi-Fi network and follow the setup instructions provided by TP-Link. You can use the WPS button on your router to quickly connect the range extender to your network, or you can set it up manually using a web browser.