The LW523 is a combination of a web based input control unit and a remote wall mixer. The RM523 web based input control can be switched between several input sources while the WP523 converts a signal coming from a stereo line-level audio source (such as CD-player, Tuner, MP3 player, … ) or balanced microphone to the level corresponding the differential signal input on the LX523 (RJ45). Making it possible to transfer high-quality audio over long distances between the wall panel and the loudspeaker, by just using inexpensive twisted pair CAT5 cabling.. This makes the set ideal for use in classrooms, meeting rooms,… .