TP-Link Deco P9 AC1200+AV1000 Whole Home Hybrid Mesh Wi-Fi System Up To 4000 Sq ft Thick Wall Wi-Fi Booster Parental Controls (2- Pack): From the manufacturerMesh Wi-Fi + Powerline: Signal Through WallsDeco P9 combines dual-band Wi-Fi and powerline to establish a stronger mesh network. Powerline technology uses your home’s electrical wiring to create stronger connections between Deco units, reducing the impact of walls and other ob