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Sorry, that's beyond my knowledge. I just know that some animals such as deer can't see red, or can't see it well. Mixed feedback on using colours, some say it's very effective, while others have...

I'm now stocking the Convoy C8+ and L21B models with the Luminus SST-20 Deep Red LED at 660nm. Most brands including Maxtoch use 620nm, this is at the start of the red spectrum. At 660nm it's a much...