We had an AV integrator ask us to develop a way to control four channels of audio volume via IR remote control.  While developing that system, it occurred to us that if we changed the IR control to contact closure that might make a very useful product for museums with audio exhibits without an automated control system.  We have three products fully developed in this category that can control up to 16 audio channels and we are developing one more.  To learn more on each click the image below.

IR Volume Commander	Motion Volume Commander

Vol IV Add-On (Increase Channels +4)	Mic Volume Commander