I've just started playing with a couple of these. When installed in the ISY it creates about 24 devices, but I'm only interested in the Dimmer Switch devices numbered .2 - .5. To make all this a bit more organized I created a folder and stuffed all the devices into them.
These can be programmed as independent dimmers for 12-24V up to 6A load max per channel, 10A total load on all together. For driving LED's that's a fair bit.
The output terminals are labeled R, G, B, W with R Dimmer #.2, G Dimmer #.3, etc. I was able to control my particular led strip light down to 1.5 percent
To set parameters use the first device "Multilevel Switch". I set parameter 152, the hub controlled ramp rate. This seems a bit wonky, the set button keeps pulsing for a long time but it seems to work OK in the end.