As part of a network, routers send and receive data from connected devices. The network can be local or connected to the World Wide Web. Equipped with RJ45 connectors, routers connect computers, laptops, printers and other network devices. A WLAN-router transmits radio signals, but often has several RJ45 connectors that can also connect to the network devices without a wireless function. Security is provided by integrated encryption systems and firewalls. Splitter, more precisely: Power over Ethernet Splitters, supply network-enabled devices with power over the Ethernet cable. This is particularly advantageous if, for example, access points operate in inaccessible places and thus power cables can be saved.