I think what they're saying is that when it does "pop in" it can be far enough away that it's only one pixel rendered, as there would theoretically be enough memory savings via reverse tessellation to have an "infinite" render distance (obviously excluding things that render to be smaller than 1px*1px)
RejZoR knew how this worked, they just called it the wrong thing, thinking that tessellation could mean going either way, adding or removing polygons, not just adding polygons
The white box labeled "merrytek" is the motion sensor, you can find it here: https://www.merrytek.com/sale-7590840-ip20-on-off-dimmable-motion-sensor-for-ceiling-lamp-tri-proof-light.html
typically the first thing to fail in an LED light assembly is the power source not the leds, so you might see about trying to find a replacement for the white box at the top. If you have a multimeter you could try probing the wires between the controller box (with the circle and green LED) and the power box to see if motion sends some kind of signal. Do you think you could post a better picture of just the power and control boxes?
banned for double negative
the proper sentence would have been either "Banned for neither capitalization NOR period." or "Banned for no capitalization OR period."