The lights communicate with each other with IR and adjust their PWM intensities according to what I am doing.
Now that makes me curious. How do the lights figure out what you are doing?
The lights know where I am at any time. If I am on the couch still, like watching TV, they will sense this sense the lack of movement and dim themselves in a sequence. The distant one dim first and only the one above me stays on for a while. They look for my entry into the tool room, light up to full brightness, then dim down to 5% after I have left for a few minutes. In the office, they stay bright for a lot longer, dimming after about 10 minutes of zero movement. In the lab, they say brightest over where I am working and gently dim further afield, all at a PWM frequency of a kHz. If I walk to a dimmed area, the new area lights up and the old area dims. The IR comms technique between luminaires was patented. There is no central server - it is all done by mesh comms over IR. The innovative product is great and very cost saving with electricity consumption.
I developed the R&D and production test equipment for the company that developed and manufactured the product as a contractor. But the company went into receivership and the investors lost a lot money. The lawyers and receivers involved were absolute lowlife scum. I think only a certain type of person can be a lawyer, receiver or a parking ticket inspector. Although parking ticket inspectors deserve a lot more respect because they generally treat people with courtesy.