I have one, and so does Pat (Cubdriver). There's a couple of annoying things about it. First, it seems almost no one knows anything about it. There is now a scanned manual on BAMA, but it's still a bit of an enigma. Second (and worst) it is NOT serviceable at all. I believe that nearly complete disassembly is required to get at most of the boards.
Also, it requires batteries to function (according to the manual), confirmed by my battery-less example not doing much of anything other than lighting the neon lamp.