Each LED filament contains special semiconductor chipsdelivering pure ultraviolet UV-A radiation- Wavelength peak 400nm is entirely safe for human exposure- Pure UV radiation with extremely low lumen output, which avoids masking fluorescence effects- Full glass construction with no external lacquer coating to peel or scratch off- IP54 water/dirt/dust resistant- Engineered in Belgium, Made in China- Applications include: lighting effects in entertainment venues,authentication of banknotes, passports & drivers licences, sensory rooms.

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