What is the easiest way to fix Wi-Fi dead zones in your house or office? The TP-Link TL-WA850RE wall-plug Wi-Fi range extender intercepts your router's wireless signal and expands it into hard-to-reach rooms, hallways, and backyards. Outfitted with an intelligent signal indicator light, this compact wireless repeater maximizes coverage and includes an Ethernet port to connect smart TVs or desktop PCs directly.