Powerline adapter TP-LINK RE215

Quick overview from the supplier:

Wi-Fi AC Dual Band Range Extender/Access Point TP-LINK "RE215", 750Mbps, Mesh, 2xExternal Antennas // Extends dual-band Wi-Fi across your home to eliminate Wi-Fi dead zones. Creates a Mesh network by connecting to a OneMesh router for seamless whole-home coverage. Operates over both the 2.4 GHz band (300 Mbps) and 5 GHz band (433 Mbps)*1 for more stable wireless experience. Smart signal indicator helps to find the best location for optimal Wi-Fi coverage by showing the signal strength. Push the WPS button to easily set up a Mesh network you can uniformly manage from the Tether app or Web UI. Works with any Wi-Fi router or wireless access point