I have a CRT-200 board and a big block on it that says CRT-209 Part-2131-82. I could also use the DIP settings.
Also, I was reading that this may not have a knock down switch, but the box it all came in looks like it was setup to knockdown but I have no idea how to tell or what I need to do to enable/disable that.
I tried emailing the company but I did not get any reply...