Used in Amusement or Vending.
From The manufacturer:
The GBA ST1+ bill acceptor has been designed for use in a variety of applications that call for a 12Vdv or 24Vdc operation and require to accept bill widths up to 80mm. Its powerful Sense Technology provides the highest standards in note acceptance and security. Removable cassettes will store notes in a range of capacities, with a locking option. A series of interface options connect the ST1+ to your application and a flashing green LED note guide will invite users to insert their notes in any light.