Ultraviolet Detection, usually use LED UV light or UV bulb to revael the UV features hided which can not seen by naked eye.
Some use 1 UV light, some use 2 UV light. Some use the Long and Short UV light.
UV money detector
UV fake note detector
Widly used in banknote, cheques, documents, ID cards, Credit cards etc.
LED UV IR Detection Fake Note Detector Counterfeit Money Detector WM MG with Magnifying Lens V100
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