TP-Link TL-PA4010PKIT Passthrough Powerline Adapter Starter Kit, No Configuration Required, UK Plug, Pack of 2

HomePlug AV standard compliant, providing data transmission over electrical wires
Stable and high-speed data transfer rate over electrical wires, ideal for HD video streaming, online gaming and large file downloading.
Up to 300m range over the household power circuit for efficient performance through walls or across floors.
Integrated power socket making sure that no power outlet goes to waste.
No setup required, simply plug and play, Operating Temperature: 0°C~40°C (32°F~104°F); Storage Temperature: -40°C~70°C (-40°F~158°F)
Comes with 3-year manufacturer's warranty