Quoted from Dr-Willy:you need 110 volt up stacker validator. ICT, Pyramid, Mars etc etc. I recommend mars personally. They are easy to rebuild and will last a long time. Can usually pick up a used one for around 100 on ebay or sometimes on here if people are selling some off. Whatever you buy make sure it comes with the harness.
I thought they went to 12v to keep the HV off the door.