The SDC12™ features 12 DMX channels, DIP switches to set a starting DMX channel, a master dimmer fader, on/off switch, 3pin and 5pin XLR output, and operates via an external 12VDC power supply (included) or a 9VDC battery (not included). Great handheld device for product demos or manual control of LED or conventional fixtures. Can be wall mounted for perminate installations.