Deco uses a system of units to achieve seamless whole-home WiFi coverage eliminate weak signal areas once and for all ! Deco M4 (1-pack) can expand coverage at any time by pairing with any one of TP-Links Deco devices to form a mesh network. Deco M4 provides fast and stable connections with speeds of up to 1167 Mbps and works with the major internet service provider (ISP) and modem. A Deco M4 delivers Wi-Fi to an area of up to 2000 sq. ft. If that?s not enough, simply add more Decos to the network anytime to increase coverage.* With advanced Deco Mesh Technology, pair any Deco units together to form a unified network with a single network name. Devices automatically switch between Decos as you move through your home for the fastest possible speeds.Parental Controls limit online time and block inappropriate websites according to unique profiles created for each family member.Setup is easier than ever with the Deco app there to walk you through every step.