Rail Merge is a DIN rail mounted product that merges two DMX inputs to one DMX output. The inputs are independently isolated with a high level electrical protection. It is configured via an 8-way DIP switch that enables operation in remote or standalone mode, and numerous user-selectable options.

Rail Merge is designed for situations in which there may be multiple controllers but only one DMX line. This is often the case in theatres, where the house lights and moving lights tend to be controlled by separate consoles. railMerge provides a useful means of getting all the data onto the DMX line from different locations within the building.