1. Introducción
The Alonefire SV41 is a powerful 10W UV LED flashlight designed for various detection and inspection tasks. Utilizing a 395nm ultraviolet light source, it is effective for revealing substances invisible to the naked eye. This manual provides essential information for the safe and effective use of your SV41 flashlight.
2. Información de seguridad
WARNING: Ultraviolet (UV) light can be harmful to eyes and skin. Always wear the provided UV protective glasses when operating the flashlight. Do not look directly into the UV light source. Keep out of reach of children.
- Always wear UV400 rated protective eyewear when using the UV flashlight.
- Avoid direct exposure of UV light to skin for prolonged periods.
- Do not point the flashlight at people or animals.
- Asegúrese de que la batería esté insertada con la polaridad correcta.
- Use only the specified rechargeable battery and charger.
3. Contenido del paquete
Por favor verifique que todos los artículos estén presentes en su paquete:
- Alonefire SV41 UV LED Flashlight
- Batería recargable de iones de litio (1 incluida)
- Cargador de batería con cable USB
- UV Protective Glasses (UV400)

Image: The complete Alonefire SV41 kit, showing the UV flashlight, yellow protective glasses, a battery charger, and a USB charging cable.
4. Estructura del producto
Familiarize yourself with the components of your Alonefire SV41 flashlight:

Image: An exploded diagram illustrating the internal and external components of the SV41 flashlight, highlighting the heat sink, UV LEDs, lens, handle, and switch.
5. Configuración
5.1 Instalación de la batería
- Desenrosque la tapa trasera de la linterna.
- Insert the provided Lithium-ion battery with the positive (+) end facing towards the flashlight head (LEDs).
- Vuelva a atornillar la tapa trasera de forma segura.
5.2 Carga de la batería
The included charger is designed for the Lithium-ion battery. It features overheat and overcharge protection.
- Place the battery into the charger, ensuring correct polarity.
- Connect the USB cable to the charger and a suitable USB power source (e.g., computer, wall adapter).
- El cargador indicará el estado de carga (por ejemplo, rojo para cargando, verde para completamente cargado).
- Una vez completamente cargada, retire la batería del cargador.

Image: The battery charger connected to a power source, showing a battery being charged with an indicator light.
6. Instrucciones de funcionamiento
6.1 Encendido/Apagado
Press the button on the tail cap to turn the flashlight on or off.
6.2 Uso general
- Ensure you are wearing the UV protective glasses before activating the flashlight.
- For best results, use the flashlight in a dimly lit or dark environment.
- Hold the flashlight at an appropriate distance from the surface you wish to inspect. The optimal distance may vary depending on the application and ambient light.

Image: The Alonefire SV41 flashlight held in a hand, illustrating its portable and user-friendly design.
7. Aplicaciones
The Alonefire SV41 UV LED flashlight is suitable for a wide range of applications:
- Pet Urine and Stain Detection: Identify invisible pet stains on carpets, rugs, and other surfaces.
- Counterfeit Currency and Document Verification: Reveal security features on banknotes, passports, and other official documents.
- Inspección de minerales y piedras preciosas: Observe fluorescence in certain minerals, amber, and other gemstones.
- Detección de escorpiones: Scorpions fluoresce under UV light, making them easier to spot in dark environments.
- Curado de resina: Accelerate the curing process of UV-sensitive resins.
- Detección de fugas: When used with UV dye, it can help detect leaks in HVAC systems, automotive fluids, and plumbing.
- Inspección de la habitación del hotel: Check for cleanliness and hidden stains.

Imagen: Visual examples of the UV flashlight's utility, including detecting hidden stains in a bathroom, illuminating a cat's fur, and showing fluorescence on plants.

Image: The UV flashlight revealing a pet urine stain on a carpet next to a dog, demonstrating its effectiveness as a pet urine detector.

Imagen: Examples of amber and scheelite minerals exhibiting fluorescence under UV light, useful for verifying authenticity.
8. Mantenimiento
8.1 Limpieza
- Limpie el cuerpo de la linterna con un paño suave.amp paño.
- Clean the lens gently with a lens cleaning cloth to maintain optimal light output.
- No utilice limpiadores abrasivos ni disolventes.
8.2 Cuidado y almacenamiento de la batería
- Si no va a utilizar la linterna durante un período prolongado, retire la batería para evitar fugas.
- Guarde la batería en un lugar fresco y seco.
- Recargue la batería periódicamente si va a almacenarla durante períodos prolongados para mantener su vida útil.
9. Solución de problemas
- La linterna no enciende:
- Compruebe si la batería está insertada correctamente con el extremo positivo (+) hacia la cabeza.
- Asegúrese de que la batería esté cargada.
- Tighten the tail cap and head assembly securely.
- La luz es tenue:
- La batería puede estar baja; recárguela.
- Limpie la lente si parece sucia.
10. Especificaciones
| Característica | Especificación |
|---|---|
| Modelo | SV41 |
| Potencia de la fuente de luz | 10 vatios |
| Longitud de onda UV | 395 nm |
| Volumentage | 3.7 voltios |
| Material | Aleación de aluminio |
| Resistencia al agua | Impermeable |
| Tipo de batería | 1 batería de iones de litio (recargable) |
| Peso del artículo | 260 gramos |
| Dimensiones (paquete) | 18.5 x 8.7 x 5.7 cm |
11. Garantía y soporte
For warranty information or technical support, please refer to the product packaging or contact Alonefire customer service directly. Keep your purchase receipt for warranty claims.



