W-LAN / Wifi
A wireless local area network (WLAN) is a wireless distribution method for two or more devices that use high-frequency radio waves and often include an access point to the Internet.
A WLAN allows users to move around the coverage area, often a home or small office, while maintaining a network connection.
The WLAN transmits radio frequency signals at 2.4 GHz and 5 GHz. It functions similar to a radio, but is able to send and receive. The WLAN is normally built up by a router. A big variety of devices can be connected to it such as desktop computers, workstations, laptop computers, smartphones, refrigerators or smart lights.
WLAN should not be confused with the Wi-Fi Alliance's Wi-Fi trademark. Wi-Fi is not a technical term, but is described as a superset of the IEEE 802.11 standard and is sometimes used interchangeably with that standard.