1. Product Overview
The DARKBEAM UV Flashlight is a versatile tool equipped with both 365nm and 395nm ultraviolet light sources. Its compact and durable design makes it suitable for a wide range of applications, from household inspections to specialized professional uses. The integrated rechargeable battery and USB-C charging port ensure convenience and long-term usability.
Figure 1: DARKBEAM UV Flashlight (V4 and V5 models) with accessories.
2. Package Contents
- V4 UV Flashlight (365nm) x1
- V5 UV Flashlight (395nm) x1
- Built-in Lithium Ion Battery (included in each flashlight)
- USB Charging Cable x2
- Instruction Manual x2
3. Key Features
- Dual Wavelengths: Features both 365nm (invisible, purer UV) and 395nm (violet, general purpose) UV LEDs.
- High Power Output: Each LED bead provides 10W power and 1300mW radiant intensity.
- Filtered 365nm Light: Equipped with a hard toughened black filter to remove visible purple light, enhancing detection clarity for specific applications.
- USB-C Rechargeable: Built-in rechargeable battery with convenient USB-C direct charging.
- Compact and Portable: Weighs 2.02 oz and measures 3.5*0.85 inches, designed for easy carrying.
- Durable Construction: High-quality aluminum alloy case for enhanced heat dissipation and reliability.
4. Setup and Charging
Initial Charge
Before first use, fully charge the flashlight. The device comes with a built-in Lithium Ion battery.
Charging Procedure
- Locate the USB-C charging port on the flashlight.
- Connect the provided USB-C charging cable to the flashlight.
- Plug the other end of the USB cable into any standard USB power source (e.g., wall adapter, computer, power bank) with an output of 5V/2A or less.
- The power indicator light on the end switch will illuminate red during charging.
- Once fully charged (approximately 1 hour), the indicator light will turn green.
Figure 2: USB-C Direct Charge and Indicator Lights.
A full charge provides approximately 1 hour of runtime.
5. Operating Instructions
Turning On/Off
Press the power button located on the end of the flashlight to turn it on. Press again to turn it off.
Using the 365nm Flashlight (V4)
The 365nm light is a purer, less visible UV light. It is ideal for detecting fluorescent agents, security codes, watermarks, and for applications like rock hounding or antique appraisal. When irradiating items containing fluorescent agents, it will show an obvious blue-violet light.
Figure 3: UV Black Filter Lens for enhanced detection.
CAUTION: Do not twist the top of the flashlight, as this may cause it to stop working.
Using the 395nm Flashlight (V5)
The 395nm light emits a more visible violet light and is excellent for general detection purposes, such as pet urine, stains, and other fluorescent materials.
Figure 4: Pet Urine Detector in action.
Important Note: The 365nm light is designed to be less visible to the human eye than the 395nm light. This is normal and indicates a purer UV output for specific applications. Do not look directly at the UV light.
6. Applications
The DARKBEAM UV Flashlights are suitable for numerous applications:
- Detecting dried pet urine and other invisible stains on carpets, rugs, and clothing.
- Authenticating banknotes, passports, and other security documents.
- Curing UV resin for crafts and 3D printing.
- Identifying fluorescent minerals, uranium glass, and gemstones.
- Locating hidden cracks in ceramics or glassware.
- Detecting AC leaks in vehicles.
- Finding scorpions and certain insects (e.g., tomato hornworms).
- Inspecting hotel rooms for cleanliness.
- Detecting cat ringworm.
Figure 5: Diverse applications of the UV flashlight.
Video 1: Demonstration of DARKBEAM UV 365nm flashlight (V4) showing its effectiveness on silicon zinc ore compared to other products.
7. Maintenance and Care
- Cleaning: Wipe the flashlight body with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For optimal battery life, charge the flashlight regularly, even if not in frequent use. Avoid completely draining the battery before recharging.
- Water Resistance: This product is Not Water Resistant. Avoid exposure to water or high humidity.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Low battery; Power button malfunction. | Charge the flashlight fully. Ensure the power button is pressed firmly. |
| Light is dim or flickers. | Low battery. | Recharge the flashlight. |
| 365nm light appears very dim. | Normal operation for 365nm wavelength. | The 365nm light is designed to be less visible to the human eye for purer UV output. This is not a defect. |
| Flashlight not charging. | Cable or power source issue; Port obstruction. | Try a different USB-C cable or power source. Check the charging port for debris. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | DARKBEAM |
| Model Number | V4+V5-DB |
| Product Dimensions | 0.85"D x 0.85"W x 3.5"H |
| Item Weight | 1.92 ounces |
| Light Source Type | UV LED (365nm & 395nm) |
| Light Source Wattage | 10 Watts |
| Brightness | 1300 millicandela |
| Power Source | Battery Powered (Built-in Lithium Ion) |
| Charging Input | 5 Volts (DC) / 2A (USB-C) |
| Runtime | 1 hour (approx.) |
| Material | Aluminum |
| Water Resistance Level | Not Water Resistant |
10. Warranty and Support
This product is covered by the manufacturer's standard warranty. Please refer to the product packaging or contact the seller for specific warranty terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact DARKBEAM customer service through the platform where you purchased the product or visit the official DARKBEAM store page on Amazon.
DARKBEAM Store: https://www.amazon.com/stores/DARKBEAM/page/88F8C00E-204E-44D4-9925-CBF4532DC27B
