have a 35AF3?? touch tone pad in a mounting, I know it works when put across a telephone line, like it should.
and I KNOW I saw someplace how to wire one to work with a 9 volt battery.
I have been messing with this thing ( no constantly) for a couple days and can’t get to work with 9 volts,
when I know it actually works at a much lower voltage in “telephone” service.
I also know that I have seen, at one time, at least one article , but I am unable to find anything now.
If anyone knows of this article, or a similar one, could point me to it.