The present invention provides a wireless LAN system 22 that causes a client 40 to display information of a local unit.A wireless LAN device 20 has a function of connecting the client 40 of a LAN with another network 50. The wireless LAN device 20 has a memory 27 that stores Web data, which is displayable by a browser of the Internet, and a controller 26 that spontaneously transmits the Web data stored in the memory to the client 40 of the wireless LAN system 22 at a predetermined timing.