Controllable via 24V DC RGB+W controller | With RGB+W converter (channels are combined with limitations): RGB 100% = at 34 W | 4000 K 100% = 3200 lm at 34 W | RGB + 4000 K each 50% ~ 3200 lm at 34 W || Without RGB+W converter (channels run unrestrained): RGB 100% = at 34 W | 4000 K 100% = 3200 lm at 34 W | Not recommended: both channels 100% = ~ RGB & 4000 K = 3200 lm at 57 W