After a few years of my addiction to interest in home automation, the issue that I have found most problematic for users is that of compatibility. This causes a lot of confusion, and unforunately affects even devices using "standards" such as ZigBee, which in theory should facilitate multi-vendor compatibility. One of the areas of most divergence is that of ZigBee lighting controls, so I thought I'd collate what I know to try to explain what works, what doesn't work, and why.
