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It's basically an IR thermometer that outputs a color instead of a number reading. Those "gadgets" are already pretty cheap, so not sure if replacing the expensive passive display with a 15 cent rgb led would make anyone profit.

I use this one for checking the oil on my pan to see if it's hot enough for my ribeye steak: http://www.amazon.com/Digital-Non-Contact-Laser-Thermometer-...

If they used an rgb led instead of the read-out, you might be able to buy one for $5.

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