The scene setter is a 24 channel DMX-512 and standard MIDI controller.48 sets of program can be programmed in 4 pages and the total steps can not more than 4500. We strongly recommend that you take time to read this manual fully before you attempt to use the controller. we are sure that it is the most advanced unit for its size and price and it will provide you easy operation and tremendous control power. STAGE DESIGNER REAR PANEL DC INPUT MIDI DMX OUT AUDIO REMOTE 1=Ground 2=Data+ 3=Data- 1=Gro