The Spray Dampening System has a decentralized control system with Masterboxes.
Masterboxes controls the Spray Bars and the Brushes. It also has several communication ports for integration with Press Control System.

The Masterbox handles the communication between the Spray bars and the Control System for the printing machine.
One Masterbox can handle 16 nozzles, i.e. two 8-nozzles Spray Bars or four 4-nozzles Spray Bars.
The Masterbox also works as a test unit where it is possible to test the Spray Bars directly from the Masterbox, without disturbing other production.