My Dad's business had this available for the workers for years, until it just didn't make sense to use it anymore and then the business closed. It's been about 30+ years and we need to finally find it a happier place than our garage. We even have a 2nd machine (in the pictures) we're willing to include as part of the purchase price. Never even tried plugging them in, but honestly don't think they would work. Also, we don't have the keys and have never opened them.