The Lindy 4-Way Speaker Control features spring loaded terminal clamps to allow for four pairs of speakers to be used simultaneously or as separates from a stereo amplifier.<br><br>This is an ideal solution to independently control audio from both in-ceiling, in-wall and free standing speaker set ups in different rooms or zones, perfect for use with home audio installations, classrooms or anywhere targeted announcements may be required.<br><br>The speaker switch has a stylish black metal housing to eliminate possible interface and two separate rocker switches for easy control of audio. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-530-1164, indicating validated use in U.S. government and defense logistics supply chains.