I have an older Clean Sweep Claw Machine and want to put in a bill acceptor. I read that it takes a 110v model, but when I use my DMM on the red and black wires on the 9 pin molex I'm getting 120v. This sounds like a dumb question, but does that mean I need a 120v bill acceptor only? Or am I missing something or testing it wrong? I'm confused by the 119v 117v 115v 110v ... why there are so many so close to 120v. I've always thought voltages must match.