CDB-4 PLUS is a small multifunction unit extraordinary for retrailers but usable, due to the special supports, even on board the bus as a "small CDB-6 PLUS". It is able to operate also on battery so that, with its shoulder bag, it can be used by inspectors.

AEP Ticketing Solutions committed to provide a real alternative solutions to traditional operators, equipments with modern, affordable and, above all, based on open architectures and then on the principle that the relationship with the customer should be preserved with the respect and confidence, not by technological barriers.