Introduction
This manual provides comprehensive instructions for the safe and effective use of your DARKBEAM UV Flashlight. Designed for various applications including pet urine detection, resin curing, and leak detection, this rechargeable UV flashlight offers reliable performance and portability.
Product Features
- 395nm UV Light: Provides a powerful 395nm wavelength UV lamp for effective detection of dry pet urine stains, fluorescent agents, and more.
- Rechargeable USB-C: Equipped with a rechargeable battery and a convenient USB-C charging port, eliminating the need for frequent battery replacement.
- Adjustable Focus: Features a zoomable design to adjust the light beam from a wide floodlight to a focused spot, suitable for various inspection needs.
- Durable Construction: Made from aluminum with an IPX4 waterproof rating, ensuring durability and suitability for diverse environments.
- Portable Design: Compact and lightweight with a detachable clip for easy carrying in pockets, backpacks, or toolboxes.
- Power Indicator: A red indicator on the side switch alerts you when the battery is low, prompting timely recharging.
What's in the Box
- DARKBEAM UV Flashlight (Model: B61-DB-395NM)
- Rechargeable Lithium Ion Battery (pre-installed)
- USB-C Charging Cable

Image: The DARKBEAM UV Flashlight, its retail packaging, and the included USB-C charging cable.
Setup
Initial Charging
- Locate the USB-C charging port on the flashlight, typically covered by a rubber flap.
- Connect the provided USB-C charging cable to the flashlight.
- Plug the other end of the USB-C cable into a compatible USB power source (e.g., wall adapter, power bank, computer USB port). Ensure the power source provides a supply voltage of not more than 5V 2A.
- The power indicator on the side switch will illuminate red during charging.
- Charging typically takes approximately 4 hours for a full charge. The indicator will turn green when fully charged.

Image: The flashlight being charged via its USB-C port, illustrating compatibility with various USB power sources like wall chargers, car chargers, power banks, and computers.
Operating Instructions
Power On/Off
Press the power button located on the side of the flashlight to turn the UV light on or off.
Adjusting Focus (Zoom Function)
The flashlight features an adjustable focus mechanism. Gently push or pull the head of the flashlight to change the beam from a wide floodlight to a narrow, focused spot.
- Floodlight Mode: Push the head inwards for a wide beam, ideal for illuminating larger areas.
- Spotlight Mode: Pull the head outwards for a concentrated beam, useful for precise inspection or highlighting specific points.

Image: Illustration of the adjustable focus design, showing the flashlight in floodlight mode for wide area illumination (e.g., pet stain detection) and spotlight mode for focused illumination (e.g., outdoor inspection).
Applications and Uses
The DARKBEAM UV Flashlight is versatile and can be used for a variety of purposes:
- Pet Urine Detection: Easily identify hidden, dried pet urine stains on carpets, rugs, and furniture.
- Leak Detection: Useful for detecting leaks in HVAC systems, automotive fluids, or other machinery when used with UV dye.
- UV Resin Curing: Accelerate the curing process of UV-sensitive resins for crafts, jewelry making, or 3D printing.
- Fluorescent Agent Detection: Identify fluorescent agents in cosmetics, clothing, or other materials.
- Hotel/House Cleanliness Inspection: Check for unseen stains or unsanitary conditions on bedding, bathroom surfaces, and other areas.
- Scorpion Spotting: Scorpions glow under UV light, making them easier to spot in dark environments.
- Authenticity Verification: Verify currency, passports, and other official documents that incorporate UV security features.
- Mineral and Gemstone Inspection: Observe fluorescence in certain minerals and gemstones.

Image: A "Before" image of a dog on a couch, followed by an "After" image showing a hidden pet stain illuminated by the UV flashlight.

Image: A visual representation of diverse applications, including scorpion detection, leak identification, fluorescent material checks, UV body art, 3D printing resin curing, and ore detection.

Image: The flashlight being used to inspect a hotel room, highlighting its utility for checking the cleanliness of sheets and pillows by revealing unseen marks.
Maintenance
- Cleaning: Wipe the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Lens Care: Gently clean the lens with a lens cleaning cloth to avoid scratches and maintain optimal light output.
- Storage: Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, ensure the battery is partially charged (around 50%) to prolong its lifespan.
- Water Resistance: The flashlight has an IPX4 waterproof rating, meaning it is resistant to splashing water from any direction. It is not designed for submersion.

Image: The flashlight shown with water droplets, illustrating its IPX4 water resistance for use in various conditions.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Battery is depleted. | Charge the flashlight using the provided USB-C cable. The indicator light will turn red during charging. |
| Light output is dim. | Low battery. | Recharge the flashlight. |
| Light beam is inconsistent or flickering. | Loose connection or low battery. | Ensure the battery cap is securely tightened. Recharge the flashlight if the issue persists. |
| Cannot adjust focus smoothly. | Debris or minor obstruction. | Gently clean the movable parts of the flashlight head. Avoid forcing the mechanism. |
Specifications
| Feature | Detail |
|---|---|
| Model | B61-DB-395NM |
| UV Wavelength | 395nm (Violet) |
| Power Output | 10 Watts |
| Power Source | Rechargeable Lithium Ion Battery (included) |
| Charging Port | USB-C |
| Battery Runtime | 3-6 hours (depending on usage) |
| Material | Aluminum |
| Water Resistance | IPX4 (Waterproof) |
| Dimensions (L x D) | 5.05" x 1.1" (12.83 cm x 2.79 cm) |
| Item Weight | 4.64 Ounces (131.55 grams) |
Warranty and Support
Your DARKBEAM UV Flashlight is covered by a 180-day warranty from the date of purchase.
For any issues, questions, or support needs, please contact DARKBEAM customer service. We are committed to providing 24/7 online support and ensuring your satisfaction.
Please refer to your Amazon order details for specific contact information or visit the official DARKBEAM store page on Amazon.
Link to DARKBEAM Store: DARKBEAM Official Store





