The DIP Switch 10 makes it really easy to test out the setup.
Each RGB channel of each strip has its own DMX channel.
All the green connectors are very sturdy and are removable as well. So you can remove the 4-wire female connectors, and then put it into another slot to easily exchanged between each of the 8 LED channels without having to unplug the wires.
If you hook up a second unit, you can daisy chain the DMX signal from the DMX Out of the first device to the DMX In of the second device.