Buenos leds de Ultravioleta, demasiado corrido al espectro visible, no apto para minerales o billetes; sí como incitador de determinados colores o tintas que si se excitan con esta frecuencia de onda. Sobre todo, baratos!
All 20 leds were functional. Used them to create my own UV flashlight by soldering out old leds and putting in these. The light seems a bit too much in visible waves than the UV should be but still I could use it to read UV ink when I needed.
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