“A very nice product which are very bright, much brighter than I thought they would be. The datasheet Dan G linked to states the voltage and current ratings. These use much more current than your standard 5mm LED (about 750mA per colour) so make sure you use the correct size wire.”
“Very bright! Take care not to stare direct at it! Datasheet here: https://cdn-shop.adafruit.com/product-files/2524/FD-9RGB-Y2.pdf .
You'll probably melt cheap 1/4w resistors unless you put several in parallel too :)”
