UV Blacklight Flashlight 9/12/21 LED – Pet Stain & Currency Detector

Reveal the Invisible with UV Blacklight Technology

The KDULIT UV Blacklight Flashlight is a compact, pocket-sized ultraviolet torch available in 9, 12, and 21 LED configurations. Whether you need to detect pet stains on carpets, verify the authenticity of banknotes and ID documents, inspect fluorescent inks, or cure gel nails, this versatile blacklight has you covered. Made in Mainland China.

Why You'll Love It

• Multi-Use Detection: Instantly reveals pet urine, dry stains, invisible ink, fluorescent markings, counterfeit currency, and even scorpions in the dark.
• Bright UV Output: Emits at 395–400 nm wavelength for powerful, wide-area ultraviolet illumination — brighter than many single-LED alternatives.
• Durable Aluminum Alloy Body: Lightweight yet rugged construction withstands everyday wear. The 21/51 LED models feature silicone O-rings for added water resistance.
• Long LED Lifespan: Up to 100,000 hours of bulb life means this flashlight will be your go-to UV tool for years to come.
• Portable & Pocket-Friendly: Compact form factor fits easily in a pocket, bag, or tackle box — perfect for home, travel, or outdoor use.
• Nail Dryer Capable: The UV output is suitable for curing UV gel nail polish at home.
• Easy Tailcap Switch: Simple click on/off tailcap design for one-handed operation.
• Certifications: CCC, CE, and RoHS certified. No high-concern chemicals.

Available Configurations

Specifications

• Body Material: Aluminum alloy
• Waterproof: Yes (O-ring sealed on select models)
• Lumen Output: 350+
• Lighting Range: Up to 50 m
• Switch Type: Tailcap click on/off
• Voltage: 3.6V – 4.5V
• Batteries: 3×AAA (not included)
• Runtime (51 LED): 4–6 hours on full charge
• Color: Black
• Brand: KDULIT

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For more information on UV light safety and usage guidelines, visit the FDA's resource on Ultraviolet (UV) Radiation.

Learn more: Flashlight

Frequently Asked Questions

Q: What is the wavelength of this UV blacklight flashlight and why does it matter?

A: This UV blacklight flashlight operates at a wavelength of 395–400 nm, which falls in the near-UV spectrum. This range is ideal for causing fluorescent substances — like pet urine, invisible inks, and counterfeit-detection markings — to visibly glow, making detection quick and easy without requiring special equipment.

Q: Do batteries come included with the UV flashlight?

A: No, batteries are not included. All models require 3×AAA standard alkaline batteries, which are widely available at any grocery or hardware store.

Q: Can this UV flashlight be used to cure gel nail polish?

A: Yes! The UV output from this blacklight is suitable for curing UV gel nail polish, making it a handy dual-purpose tool for both detection tasks and at-home nail finishing.

Q: Is this UV flashlight waterproof?

A: Yes, this flashlight is water-resistant. The higher LED count models (such as the 51 LED version) feature silicone O-rings for additional protection against moisture, making them suitable for outdoor use.