Hello
Thanks !
Maybe, I see how many switches I can find.
But it will work just as well with the rotary type switch, which
is also easier to mount onto a panel.
Yes it runs on +/- 15v, but also will work fine [i think] on +/-12v
but the CV range will be different to the 3v/5v range, so some
small adjustment to a couple of resistors if this is important.