Best Alkaline Black Light Flashlights in 2026

4. The filter is very effective and can output pure 365nnm ultraviolet light, leaving stains and urine stains nowhere to hide. Note that not all urine stains are clearly visible when using ultraviolet light. Due to differences in the environment and diet of different organisms, urine stains have different reactions to ultraviolet radiation. For example, when a person drinks too much water, ultraviolet light has a significantly lighter effect on urine stains;

5. Of course, UV301D cannot be suitable for everyone in the world. You can try it for 30 days. If it is not suitable, you can get your money back by contacting us and providing the details of your purchase. Our after-sales service is: 30-day free return and exchange, one-year warranty, lifetime maintenance, if you have any questions at any time, you can contact us at any time. A shopping experience without any risk at all, hope to be your forever friend!

Reliability and Durability and Warranty: 1. 4.9 feet impact resistance, anti-scrape, anti-corrosive in harsh environment. 2. Digital regulated current output and constant brightness; Polarity reverse protection prevent the flashlight from improper battery insertion. 3. Apply with IPX-8 waterproof rate submersible 6.5 feet working for 30 min. 4. The factory and sellers guarantee 18 months quality warranty and 30 days return policy.

Multitask application in profession: such as detecting counterfeit documents, money verification, forensic science, gasoline inspection, amber and jewelry detection, body fluid detection and fluorescence, attracting certain breeds of fish or hunting scorpions and tracking other creatures.

Reliability and Durability and Warranty: 1. 4.9 feet impact resistance, anti-scrape, anti-corrosive in harsh environment. 2. Digital regulated current output and constant brightness; Polarity reverse protection prevent the flashlight from improper battery insertion. 3. Apply with IP-65 waterproof rate. 4. The factory and sellers guarantee 18 months quality warranty and 30 days return policy.

Multitask application in profession: such as detecting counterfeit documents, money verification, forensic science, gasoline inspection, amber and jewelry detection, body fluid detection and fluorescence, attracting certain breeds of fish or hunting scorpions and tracking other creatures.

4. Durable Construction: Made of aerospace-grade aluminum with military-grade III hard-anodized finish, this flashlight is scratch-resistant and wear-resistant. It can withstand harsh environments and is corrosion-resistant.

5. Wide range of uses: This flashlight is suitable for many kinds of industries, such as document counterfeiting detection, currency verification, forensic inspection, gasoline detection, amber and jewelry inspection, bodily fluid detection, fluorescence, attracting certain fish, scorpion hunting and tracking other creatures. We provide 18-month warranty and 30-day return policy. Please contact us with any questions or concerns.

Multitask application in profession: such as detecting counterfeit documents, money verification, forensic science, gasoline inspection, amber and jewelry detection, body fluid detection and fluorescence, attracting certain breeds of fish or hunting scorpions and tracking other creatures.

Reliability and Durability and Warranty: 1. 4.9 feet impact resistance, anti-scrape, anti-corrosive in harsh environment. 2. Digital regulated current output and constant brightness; Polarity reverse protection prevent the flashlight from improper battery insertion. 3. Apply with IPX-8 waterproof rate submersible 6.5 feet working for 30 min. 4. The factory and sellers guarantee 18 months quality warranty and 30 days return policy.

3. Two buttons: right button - power button, left button - shift button.

4. Lock function (child lock function)： Flashlight lock: Press and hold the power button and shift button simultaneously When the three main lights flash three times, the flashlight is locked, and the button operation is disabled when the flashlight is locked； Unlock: Press and hold the power button and shift button at the same time, the flashlight will be unlocked when the three main lights flash once.

5. Temperature control function： If the temperature exceeds 50 degrees, it will reduce the current automatically.