Powerline / DLAN
Powerline networks (also called DLAN) are implemented using power cabling within an object. The advantage here is that there is no need for complex network cabling / data cabling, but rather the normal power grid within a house or apartment. The DLAN adapters are simply plugged into a free socket. After the adapters have been "paired" with one another and have negotiated a common encryption (this prevents someone from simply gaining access to an existing network with a DLAN adapter), the adapters can now transmit data to one another.
On the underside of the DLAN adapter there is then one or more RJ-45 sockets to which a normal Ethernet cable can be connected. You can connect any number of end devices to one another via a DLAN network. Your internet router can of course also be integrated. All connected devices can then use the router's Internet connection.
Very high transmission rates (up to 1200 Mbps) are now possible. There are also modules that can send a WiFi signal so that devices can also be integrated into the DLAN network via a wireless connection. A prerequisite for a DLAN is that the sockets used are on the same phase.