Introduction
This manual provides comprehensive instructions for the safe and effective use of your Alonefire SV103 10W UV LED Blacklight. Please read this manual thoroughly before operation and retain it for future reference.
Product Overview
The Alonefire SV103 is a powerful UV LED blacklight designed for various detection and curing applications. It features high-quality UV LEDs and a durable aluminum alloy construction.
Key Features:
- High-Quality 395nm UV LED: Equipped with three 395nm UV LEDs, providing a maximum power consumption of 10W and a luminous power of 2800mW for professional-grade blacklight performance.
- Durable Aluminum Alloy Body: The flashlight body is constructed from high-quality aluminum alloy, significantly improving heat dissipation and extending the lifespan of the lamp beads, enhancing reliability and durability.
- USB Type-C Rechargeable: Features a convenient USB Type-C charging port, allowing for easy and reversible plug insertion. Includes a charging indicator for monitoring power status and ensuring safe charging. A large-capacity rechargeable battery is included.
- Wide Range of Applications: Ideal for detecting pet urine stains, checking for cat fungus, authenticating currency, identifying scorpions, examining minerals, curing resin, hardening adhesives, detecting anisakids, and ID verification.
- IPX5 Water Resistance: Designed to be used in rainy conditions without concern for malfunction due to moisture. However, it should not be submerged in water.

Image: A detailed view of the three high-quality 395nm UV LEDs, which are the light source for the Alonefire SV103.

Image: The Alonefire SV103 featuring its removable back clip, demonstrating how it can be conveniently attached to a belt or backpack for portability.
Package Contents
Please verify that all items listed below are present in your package:
- Alonefire SV103 UV LED Blacklight
- 18650 Lithium-Ion Rechargeable Battery
- USB Type-C Charging Cable

Image: The Alonefire SV103 UV LED Blacklight, accompanied by its rechargeable 18650 battery and a USB Type-C charging cable.
Specifications
| Attribute | Specification |
|---|---|
| Brand | ALONEFIRE |
| Model | SV103 |
| Light Source Type | LED |
| Wavelength | 395nm |
| Max Power Consumption | 10W |
| Luminous Power | 2800mW |
| Body Material | High-Quality Aluminum Alloy |
| Charging Port | USB Type-C |
| Water Resistance | IPX5 |
| Battery Type | 18650 Lithium-Ion (included) |
| Color | Purple (accent) |
| Finish Type | Polished |
Safety Instructions
WARNING: UV light can be harmful to eyes and skin. Always follow these safety precautions:
- Do not look directly into the UV light. Prolonged exposure can cause eye damage.
- Avoid direct skin exposure to the UV light for extended periods.
- Keep this device out of reach of children.
- Do not disassemble or modify the flashlight.
- Use only the specified 18650 lithium-ion battery.
- Do not expose the battery to extreme heat or dispose of it in fire.
- While the device is IPX5 water-resistant, it is not designed for submersion. Do not immerse in water.
- If the flashlight becomes excessively hot during use, turn it off and allow it to cool down.
Setup
Battery Installation:
- Unscrew the tail cap of the flashlight counter-clockwise.
- Insert the included 18650 lithium-ion battery with the positive (+) end facing towards the head of the flashlight.
- Screw the tail cap back on clockwise until securely tightened.

Image: A hand demonstrating the compact size and grip of the Alonefire SV103 UV LED Blacklight.
Operating Instructions
Turning On/Off:
Press the power button located on the side of the flashlight to turn the UV light on. Press it again to turn the UV light off.
Note: This model features a single operating mode.
Charging
The Alonefire SV103 features a convenient USB Type-C charging port.
- Locate the USB Type-C port on the flashlight.
- Connect the included USB Type-C charging cable to the flashlight and to a compatible USB power source (e.g., computer, wall adapter).
- The charging indicator light will illuminate to show the charging status:
- Red Light: Indicates the battery is currently charging.
- Green Light: Indicates the battery is fully charged.
- Charging typically takes 4-5 hours for a full charge.
- A fully charged battery provides approximately 1-1.5 hours of continuous operation.

Image: The Alonefire SV103 UV LED Blacklight connected via USB-C for charging, with visual indicators for charging status (red for charging, green for fully charged).
Applications
The Alonefire SV103 UV LED Blacklight is versatile and can be used for a variety of purposes:
- Pet Stain Detection: Identify hidden pet urine stains on carpets, rugs, and furniture.
- Cat Fungus Detection: Assist in detecting certain types of fungal infections in cats (Wood's lamp examination).
- Currency and Document Verification: Check for security features on banknotes, passports, and other official documents.
- Scorpion Detection: Scorpions fluoresce under UV light, making them easier to spot in dark environments.
- Mineral and Gemstone Inspection: Observe fluorescence in various minerals and gemstones.
- Resin and Adhesive Curing: Accelerate the curing process of UV-sensitive resins and adhesives.
- Anisakid Detection: Aid in finding anisakid parasites in fish.

Image: Examples of the Alonefire SV103's applications, such as detecting pet fungus, skin abnormalities, fluorescent agents, verifying authenticity of items like jade and currency, and inspecting crops.
Maintenance
- Cleaning: Wipe the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, remove the battery.
- Battery Care: Recharge the battery regularly, even if not in use, to maintain its lifespan. Avoid fully discharging the battery.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Battery is dead or incorrectly installed. | Ensure the battery is fully charged and inserted with the correct polarity. Tighten the tail cap securely. |
| Flashlight does not charge. | Charging cable or power source issue; battery not making contact. | Check the USB-C cable and power source. Ensure the battery is properly seated. |
| Light output is weak. | Low battery charge. | Recharge the battery fully. |
Warranty and Support
Warranty information for the Alonefire SV103 is not explicitly provided in this manual. For warranty claims, technical support, or service inquiries, please contact your retailer or the manufacturer directly.
You can visit the ALONEFIRE Store on Amazon for more information.

