TP-Link Deco M4 (2-pack) AC1200 Whole Home Mesh Wi-Fi System. ~260sqm Coverage, Up to 100 Devices, Parental ControlDeco uses a system of units to achieve seamless whole home Wi Fi coverage eliminate weak signal areas once and for all! With advanced Deco Mesh Technology, units work 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. A Deco M4 two pack delivers Wi Fi to an area of up to 260 square metres. And if thats not enough, simply add more Decos