Some homes are just too big for one router. If you can’t get a signal to the furthest reaches of your house, condo or apartment, you should consider a mesh Wi-Fi system, which blankets your house in one giant, easy-to-manage network. Traditionally, Wi-Fi range extenders have been the easiest way to broaden coverage across your home, but the quality of range extenders can vary wildly.
Wi-Fi Mesh Systems are a much better solution as they utilize several nodes to repeat and extend the range of your network. Since Wi-Fi Mesh Systems are designed to work this way from the getgo, they’re far easier to set up, can be managed from one user-friendly interface, and can often provide better performance than multiple range extenders. There are a ton of mesh kits out there, but these are the few that really stand out from the pack.
Source: IGN.com Best Wi-fi Mesh System 2019: Expand Your Wireless Internet Network