The TP-Link Deco M4 AC1200 uses a system of modules to provide seamless Wi-Fi coverage throughout your home. With advanced Deco Mesh technology, Deco modules work together to create a unified network with a single network name. Devices automatically switch between the different Deco modules as you move around your home to ensure the fastest possible connection. The Deco M4 kit with two modules provides Wi-Fi coverage for an area of up to 260 square meters. If that’s not enough, simply add more Deco modules to the network at any time to expand your coverage.