1. Introduction
Thank you for choosing the ALONEFIRE SV98 365nm UV Flashlight. This compact and powerful UV light is designed for a wide range of professional and household applications, utilizing a high-quality 365nm UV LED for optimal performance. Its durable aluminum alloy construction and USB-C rechargeable design ensure reliability and convenience.

Image: The ALONEFIRE SV98 365nm UV Flashlight, showcasing its sleek black design and the purple UV light beam.

Image: Close-up view of the flashlight head, highlighting the high-quality 365nm UV LED.
2. Package Contents
- ALONEFIRE SV98 365nm UV Flashlight
- USB-C Charging Cable
- Lanyard

Image: The ALONEFIRE SV98 flashlight alongside its included USB-C charging cable.
3. Setup
3.1. Initial Charging
Before first use, fully charge the flashlight. The SV98 features a built-in high-capacity rechargeable battery and a convenient USB-C charging port.
- Locate the USB-C charging port on the flashlight.
- Connect the provided USB-C cable to the flashlight and the other end to a USB power source (e.g., computer, wall adapter).
- Observe the charging indicator:
- Red light: Indicates the flashlight is currently charging.
- Green light: Indicates the flashlight is fully charged.
- Once fully charged, disconnect the cable.

Image: The flashlight connected to a USB-C port, showing the charging indicator lights (red for charging, green for full).
4. Operating Instructions
4.1. Power On/Off
To turn the flashlight on or off, press the rubber push button located on the tail cap of the device.
4.2. Applications
The ALONEFIRE SV98 365nm UV Flashlight is versatile and can be used for various detection and curing purposes:
- Pet Urine Detection: Identify hidden pet stains on carpets, furniture, and other surfaces.
- Scorpion Detection: Scorpions fluoresce under UV light, making them easier to spot.
- Currency Authentication: Verify the authenticity of banknotes by revealing security features.
- Mineral Detection: Observe fluorescence in certain minerals.
- Resin Curing: Accelerate the curing process of UV-sensitive resins and glues.
- Bed Bug Detection: Aid in identifying bed bugs and their traces.
- Fluorescent Agent Test: Detect fluorescent agents in cosmetics or other products.
- Jade and Crop Identification: Assist in identifying certain materials based on their UV response.

Image: A collage demonstrating various applications of the UV flashlight, including pet fungus inspection, skin abnormality detection, fluorescent agent testing, jade identification, authenticity identification, and crop identification.

Image: Illustration of the UV flashlight being used to detect hidden stains on bathroom surfaces, which glow under the UV light.

Image: A hand holding a stack of banknotes illuminated by the UV flashlight, revealing security features for authentication.
Important Safety Note: Do not shine the UV light directly into eyes or the eyes of pets. While 365nm UV-A light is generally safer than other UV types, direct exposure can still be harmful. Consider wearing UV protective glasses during prolonged use.
5. Maintenance
- Cleaning: Wipe the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the lens is clean for optimal light output.
- Storage: Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Resistance: The flashlight has an IPX5 waterproof rating, meaning it can withstand splashes and rain. Do not submerge the flashlight in water.
- Battery Care: For long-term storage, charge the battery to approximately 50% every 3-6 months to maintain battery health.
6. Troubleshooting
Problem | Possible Cause | Solution |
---|---|---|
Flashlight does not turn on. | Battery is depleted. | Charge the flashlight using the USB-C cable until the indicator turns green. |
Light output is dim. | Low battery or dirty lens. | Charge the battery. Clean the lens with a soft cloth. |
Charging indicator does not light up. | Faulty cable or power source; flashlight already fully charged. | Try a different USB-C cable or power source. If the flashlight is already charged, the green light will be on or no light if disconnected. |
Flashlight gets warm during use. | Normal operation for high-power LEDs. | This is normal. The aluminum alloy body is designed to dissipate heat. If it becomes excessively hot, turn it off and allow it to cool. |
7. Specifications
Feature | Detail |
---|---|
Brand | ALONEFIRE |
Model Number | SV98 |
UV LED Wavelength | 365nm |
Power Consumption | Up to 3W |
Luminous Power | 600mW |
Material | Anodized Aluminum |
Power Source | Battery Powered (Built-in Rechargeable) |
Charging Port | USB-C |
Waterproof Level | IPX5 |
Item Weight | 41 g |
Dimensions (Approx.) | 77mm (length) x 17mm (diameter) |

Image: The flashlight held in a hand, illustrating its compact size and approximate dimensions (77mm length, 17mm diameter).
8. Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or contact the seller directly through the platform where the product was acquired. ALONEFIRE products are designed for durability and performance, and support is available for any manufacturing defects or operational issues.
Please retain your proof of purchase for warranty claims.