just back from mcm 1 dollar only no bill  box TESTED WORKING  FINE CALL IF NEED  help 615 646 8367 get lots of these return. to me they say not working  please call before you send 1 back please  i test each 1 before i ship it  a ba50b and  a ba30b  are the same 30 is 300 bill box 50 is 500 bill box