I've read the blurb on it, it's a neat idea having one decoder but three different ways of plugging them in, but I was wondering if anyone knows if they are worth usingI haven't messed with them, though the one you have pictured is a three-connector decoder. It is 21 pin, 8 pin,, and 9 pin.
I've read the blurb on it, it's a neat idea having one decoder but three different ways of plugging them in, but I was wondering if anyone knows if they are worth using