This vender is net-workable, meaning it can be expanded to 8 or 12 columns by adding additional units. Our proven vending mechanism has dispensed over 23 million boxes over the last 18 years. The electronics in this unit allow for multi-pricing and provide accountability and self-diagnostics. The MDB platform allows for easy connectivity to any coin mechanism, dollar bill acceptor or card reader following the same wiring platform. Large, lower door product display. Locked cash box. For ultimate security, add the hinged, wrap around security guard. See VM120 soap vender with security guard (locks in photo for display purposes only). A pedestal base is available for this unit. See VM120 soap vender base. LCD display shows product pricing, machine status and programming messages in while program mode. Imonex R7 coin drop quarter/dollar acceptance does not give change. Lower door service switch resets faults. High-security lock with three (3) point locking bar. The MDB protocol specifies the format for communications between the vending machine controller (VMC) and the peripheral devises (coin mechanism, dollar bill acceptor or card reader).