Just got the TUL by rides in the storm, this has offsets built into the 2 channels itself that can be enabled by a switch. And another switch to change between nuation/nuversion ;) This made much more sense to me and want to get more to replace blinds/shades. With blinds it can be hard to get a true zero value, and on the shades it takes 2 channels to add offset, the problem also mentioned above. Cheap and perfect companion for stuff like grand terminal/vortex or rampage etc. that don't have the maths CH2/3 section.