COB Stage Light DJ Par Lighting Betopper Uplight for Stage Dance Wedding House Decoration Church

It's one of the most useful decoration light for house decoration like swimming pool,wall, tree
etc. And It's also good for stage,wedding,church etc.

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Could these be used for church house lighting dimmable to off with DMX control board? I saw somewhere that it said 4 dmx channel. I understand two channels. One channel for each color LED. But what are the other two?