For the default RGB, it is RGB inner control. That is means the driver inside is pre-programmed. And it will change the colors in a fixed pattern and can not be changed. The pattern is mixed with RGB gradual fade and RGB jump etc.
There are two types RGB External Control. One is use the following RF controller. The controller can control unlimited units within 100 meters simultaneously. So you can click the following picture to buy only one controller if you buy several units.
The second one is DMX 512 control. All units come with signal and power cable in both end showing like the following picture.
And here is the connection for DMX512 type.
You can buy the DMX 512 by click the following image.
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