These strands appear to be well done. Basically, they work as expected. The light is noticeably dimmer than other 12V WS2811 wires I have when looking at them side by side. I would say they are about 20% brighter. Be careful when using the power injector. Power cords have the opposite convention. Red is minus, black is plus. They show it on a chart in product images but I didn't see it until I discovered it myself.
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