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I'm looking for a simple solution to instantly determine the temperature of a component from more than just a few feet away. I was thinking a 3-stage LED or cathode system (cool, blue; warm, green; hot, red) that can be recognized at a glance when not in the same room as the computer. I've found triple output RGB LEDs but it could also be done with individual components, makes no difference to me. Low power is a plus.

Is there an off-the-shelf product that can perform this function for me? I'm not looking for another DIY project right this minute. I have spare 3.5 and 5.25 bays and a mesh front CM HAF 912 that light can easily penetrate.