“DMX” stands for “Digital Multiplex Signal”. It is sometimes called DMX 512, because it can be used to control up to 512 channels. To better understand the word channel, think of a DMX “Channel” as a “Color”, so if you have an RGB light this light would use 3 “Channels” or “Colors”. You can control up
to 170 RGB Lights in a single DMX universe or up to 512 single color lights in one DMX universe. Each fixture is specifically addressed within the 512 universe using a DMX Decoder/Driver, and you program your light scenes according to the DMX address that you assigned to each fixture.