Internet via stopcontact: de powerline adapter (beste + kopen)
Best powerline adapters: also with wifi? (and How does it work)
TL-WPA4230P | AV500 Passthrough Powerline Wi-Fi Extender | TP-Link Nederland
wireless wi fi 802.11n 300mbps 2.4g firewall home router repeater extender repetidor booster for xiaomi wi fi wifi versterker|Wireless Routers| - AliExpress