1. Introduction
Thank you for choosing the VASTFIRE UV Black Light 365 NM Flashlight. This powerful and versatile flashlight is designed for a wide range of applications, including pet urine detection, wood light examination, mineral identification, banknote verification, and anti-counterfeiting. Featuring a 365 NM ultraviolet LED, a durable aluminum alloy body, and convenient USB-C recharging, this device offers reliable performance for both professional and home use. Please read this manual carefully to ensure proper operation and maintenance of your flashlight.
2. Package Contents
Your VASTFIRE UV Black Light Flashlight package may include the following items, depending on the variant purchased:
- Package A (1PC-Battery):
- 1 x VASTFIRE UV Black Light Flashlight
- 1 x Rechargeable Battery (pre-installed or separate)
- 1 x USB-C Charging Cable
- Package B (2PCS-Battery-Box):
- 2 x VASTFIRE UV Black Light Flashlights
- 2 x Rechargeable Batteries (pre-installed or separate)
- 2 x USB-C Charging Cables
- 1 x Storage Box
3. Specifications
| Feature | Specification |
|---|---|
| Material | Aluminum alloy |
| Power | 30W |
| Product Dimensions (L x Head Dia. x Body Dia.) | 160mm x 43mm x 36mm (approx. 6.3in x 1.69in x 1.41in) |
| Shell Color | Black |
| Light Source | Four-core purple light bulb |
| UV Wavelength | 365 NM |
| Working Time (Battery Life) | 8-10 hours |
| Charging Time | 3-4 hours (via USB-C) |
| Lighting Distance | < 50 m |
| Lumen | < 100 |
| Power Display | 4-gear LED indicator (25%, 50%, 75%, 100%) |
| Waterproof Grade | IP55 |
| Charger | Rechargeable (USB-C) |
| Batteries Included | Yes |
| Certification | CE |
4. Setup
- Unpack: Carefully remove all components from the packaging.
- Battery Installation: If the battery is not pre-installed, unscrew the tail cap of the flashlight. Insert the rechargeable battery with the positive (+) end facing towards the head of the flashlight. Screw the tail cap back on securely.
- Initial Charge: For optimal performance, fully charge the flashlight before first use. Refer to the 'Charging' section for instructions.
5. Operating Instructions
- Power On/Off: Press the power button located on the side of the flashlight to turn it on. Press again to turn it off.
- Power Display: The flashlight features a 4-gear LED power display next to the power button. Each blue LED represents approximately 25% of the battery charge (25%, 50%, 75%, 100%). This allows for real-time monitoring of battery usage.
- Black UV Filter Lens: The flashlight is equipped with a specialized black UV filter lens that blocks 99% of ambient visible light, ensuring a purer and more effective UV output for clearer detection results.
- Applications:
- Pet Urine & Stains: Use in a darkened room to reveal hidden pet stains on carpets, upholstery, or floors.
- Banknote & Document Verification: Check security features on currency, passports, and other official documents.
- Mineral & Gemstone Identification: Observe fluorescence in various minerals and gemstones.
- Anti-Counterfeiting: Identify counterfeit items that use UV-reactive inks or security threads.
- Pest Detection: Locate scorpions and other pests that fluoresce under UV light.
- Cleanliness Inspection: Detect unseen dirt, dust, and residues in hotel rooms, bathrooms, or other areas.
6. Charging
- Locate the USB-C charging port on the flashlight body.
- Connect the provided USB-C cable to the flashlight and plug the other end into a compatible USB power source (e.g., wall adapter, computer, power bank).
- The 4-gear LED power display will illuminate and indicate the charging progress. When all four LEDs are solid, the flashlight is fully charged.
- Charging typically takes 3-4 hours for a full charge.
7. Maintenance
- Cleaning: Wipe the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents. Keep the lens clean for optimal performance.
- Water Resistance: The flashlight has an IP55 waterproof rating, meaning it is protected against dust ingress and low-pressure water jets from any direction. It is not designed for submersion. Ensure the USB-C port cover is securely closed when not charging to maintain water resistance.
- Battery Care: To prolong battery life, avoid completely draining the battery frequently. Recharge the flashlight regularly, even if not in use, to maintain battery health. Store in a cool, dry place.
8. Troubleshooting
- Flashlight not turning on:
- Ensure the battery is correctly installed with the positive end facing forward.
- Check if the battery is charged. If not, connect the flashlight to a power source using the USB-C cable.
- Ensure the tail cap is screwed on tightly.
- Flashlight not charging:
- Verify that the USB-C cable is securely connected to both the flashlight and the power source.
- Try a different USB-C cable or power adapter.
- Ensure the power source is active.
- UV light appears dim or weak:
- The battery might be low; recharge the flashlight.
- Clean the lens surface to remove any dirt or smudges.
- Ensure you are in a sufficiently dark environment for optimal UV detection.
9. User Tips
- For best results when detecting pet urine or other stains, use the flashlight in a completely dark room.
- When checking for authenticity on documents or currency, compare the UV-reactive features with known genuine examples.
- Keep the flashlight handy for quick inspections in various environments, such as hotel rooms or rental properties, to check for cleanliness.
- The compact size allows for multiple carrying methods, including in a pocket, bag, or with a wrist strap for easy access.
10. Safety Information
- UV Light Exposure: Avoid direct and prolonged exposure of UV light to eyes and skin. While 365 NM UV is less harmful than shorter wavelengths, it is still recommended to use appropriate eye protection (UV-blocking glasses) and minimize skin exposure during extended use.
- Children: Keep out of reach of children. This is not a toy.
- Battery Safety: Use only the specified rechargeable battery. Do not attempt to open, crush, or expose the battery to extreme heat or fire. Dispose of batteries according to local regulations.
- Heat: The flashlight may become warm during prolonged use. This is normal.
- Flammable Materials: Do not use the flashlight near flammable liquids, gases, or other materials.
11. Warranty and Support
For warranty information, technical support, or any questions regarding your VASTFIRE UV Black Light Flashlight, please contact the seller or manufacturer directly. Please retain your proof of purchase for any warranty claims.





