Use the TP-Link EAP225 access point to supply an office building, or a conference center, with WiFi. This access point is the same size as a large smoke detector and you can mount it just as easily. The power comes through the network cable, so you won't need a socket. You can connect dozens of access points and create a network of WiFi hotspots, so you won't have to keep choosing a new network. The system administrator can use the cloud to assign rights to several access points. It's easy to adjust the settings in such a way, that employees have access to the network printer and the shared hard drive, and visitors don't.