On September 9, 2016 at 15:56, jwal1961 said...
I have a Monoprice 6x4 audio Matrix Switch and the rs232 codes don't seem to work with my URC mrx-8 controller. Of course Monoprice TS & URC TS do not have a clue, seems simple, but.... HELP?
Are you a dealer or end user? Never used any Monoprice gear so can't help you there. Perhaps in the control room, assuming you are a dealer.