CPI MARS MEI AE 2611 U5 bill validator that is flashport updated and accepts all the new currency ($1,$2,$5,$10 and $20). It has a 500 note bill stacker. The option switches are as follows: 1-way, 2-way and 4- way acceptance.  High acceptance/ high security. Next there are option switches for accept/reject  $2 and $20 bills. The next switch is harness enable/ always enable. The following switch is 4 pulse per dollar/1 pulse per dollar. Lastly is a switch for vending interface/ gaming interface. This will work in a wide range of applications that require acceptance of higher denomination bills. This is a 110v unit. I have worked in the vending industry for 25+ years and MEI bill acceptors/validators are the most durable, dependable and most easily maintained validators on the market. If you find that your old coinco validators are constantly jamming and causing lost time on service calls and angry customers, try out a MEI validator and you will want to update your whole fleet with them! I ship out fast and it ships priority so you will get it quickly. Unit has been thoroughly tested. Thanks!!!