I actually wrote a very long review only to have the Revain app crash. I'll try to recapture some of what I said. We have used them on the lawnmower and vehicle. Installation was easy. The sync cord definitely did it professionally and alleviated my OCD. The cable itself appears to be heavily sheathed; The strength of the cable seems to fit and does not just consist of a few strands. Water resistance seems better than many other products I've looked for. I don't think the mower has had much bad weather, the machine has been in rain and water and has never been out of service. They are very bright. I managed to see them two blocks away through the bushes as I approached the object. I tested them with a 10V 500mAh DC power adapter and they were bright enough that I didn't want to look at them directly. I suggest they draw a decent amount of power depending on your setup. When used on the same cord as other lights they dimmed a bit on 3 out of 4 flashes. Matching the pattern to other lights seems to have solved this problem. I would say they serve their purpose. you blink. They are light. I assume that they will be enough for garden tools or construction machinery. I could see some less funded law enforcement using emergency colors but I'm not sure how bright they are. Viewing angles still need to be checked as they are somewhat directional; apparently no less than the bigger namesakes.
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