1. Introducción
Thank you for choosing the Alonefire SV52 25W UV LED 365nm Rechargeable Flashlight. This professional-grade ultraviolet flashlight is designed for a wide range of applications, offering a powerful 365nm UV light source with a high-quality black filter lens for pure and effective UV output. Please read this manual thoroughly before use to ensure safe and optimal performance.

The Alonefire SV52 UV Flashlight, showing its powerful UV beam, included USB-C charging cable, and protective glasses.
2. Información de seguridad
ADVERTENCIA: Ultraviolet (UV) light can be harmful to eyes and skin. Always follow these safety guidelines:
- Protección ocular: Always wear the provided UV protective glasses when operating the flashlight. Never look directly into the UV light source.
- Exposición de la piel: Evite la exposición directa prolongada de la piel a la luz ultravioleta.
- Niños: Mantenga la linterna fuera del alcance de los niños.
- Calor: The flashlight may generate heat during extended use. Handle with care.
- Seguridad de la batería: Use only the specified rechargeable battery. Do not attempt to disassemble or short-circuit the battery.
- Desecho: Deseche las baterías y los componentes electrónicos de acuerdo con las regulaciones locales.
3. Contenido del paquete
Verifique que todos los artículos estén presentes en su paquete:
- Alonefire SV52 UV LED Flashlight
- Batería recargable de iones de litio (preinstalada o separada)
- Cable de carga USB-C
- Gafas de protección UV

The complete package contents of the Alonefire SV52 UV Flashlight.
4. Producto terminadoview
The Alonefire SV52 features a robust design and specialized components for optimal UV performance.
Características principales:
- High-Quality 365nm UV LED: Utilizes a professional 365nm UV LED as the light source, providing 25W power consumption and 4800mW light output for effective detection.
- Lente con filtro UV negro: Equipped with a hardened optical black filter lens that filters out ambient visible light, ensuring a purer and more powerful ultraviolet beam.
- Durable Aluminum Alloy Shell: Constructed from high-quality aluminum alloy, enhancing heat dissipation and ensuring reliability and durability.
- USB tipo C recargable: Supports convenient USB Type-C charging.
Identificación de componentes:

Detallado view of the flashlight components.

Illustration of the black UV filter lens function.

Comparison of 365nm vs. 395nm UV light effectiveness.
5. Configuración
5.1 Instalación de la batería
The Alonefire SV52 comes with a rechargeable Lithium-ion battery. Ensure the battery is correctly inserted with the positive (+) terminal facing towards the lamp cabeza.
5.2 Carga inicial
Before first use, fully charge the flashlight. Connect the provided USB Type-C cable to the flashlight's charging port and to a compatible USB power source (e.g., computer, power adapter, power bank, car charger).
- La luz indicadora de carga se encenderá rojo durante la carga.
- La luz indicadora de carga se encenderá verde Cuando esté completamente cargado.

Charging the Alonefire SV52 via USB Type-C.
6. Operación
6.1 Encendido / Apagado
To turn the flashlight ON, press and hold the power switch for approximately 3 seconds. To turn it OFF, press and hold the power switch again for 3 seconds.

Proper grip and power switch location.
6.2 Instrucciones de uso
Always wear the provided UV protective glasses before activating the flashlight. Direct the UV beam towards the area you wish to inspect. The 365nm wavelength, combined with the black filter lens, ensures that fluorescent materials glow brightly while minimizing visible light interference.
7. Aplicaciones
The Alonefire SV52 UV flashlight is suitable for various professional and household applications:
- Pet Urine and Stain Detection: Identify hidden pet stains on carpets, rugs, and upholstery.
- Inspección de minerales y piedras preciosas: Observe fluorescence in various minerals, amber, and gemstones.
- Currency and Document Verification: Check security features on banknotes, passports, and other official documents.
- Detección de escorpiones: Scorpions fluoresce brightly under 365nm UV light, making them easy to spot in dark environments.
- Curado de resina: Accelerate the curing process of UV-sensitive resins.
- Fishing Lure Charging: Charge fluorescent fishing lures for enhanced visibility.
- Inspección de higiene: Detect invisible contaminants in bathrooms, kitchens, and other areas.



8. Mantenimiento
8.1 Limpieza
Limpie el cuerpo de la linterna con un paño suave.amp Paño. No utilice limpiadores abrasivos ni disolventes. Mantenga la lente limpia para una óptima salida de luz.
8.2 Almacenamiento
Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the battery or ensure it is charged periodically to maintain battery health.
9. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La linterna no se enciende. | Battery is depleted. Battery is incorrectly installed. Power switch malfunction. | Charge the battery. Check battery polarity. Contact customer support if issue persists. |
| La salida de luz es débil. | Battery is low. Lens is dirty. | Recargue la batería. Limpie la lente con un paño suave. |
| La linterna se calienta durante el uso. | Normal operation for high-power UV LED. Prolonged use. | This is normal. Discontinue use if it becomes excessively hot. Ensure proper ventilation. |
| El indicador de carga no se enciende. | Charging cable is not properly connected. USB power source is faulty. | Ensure cable is securely connected. Try a different USB power source. |
10. Especificaciones
| Característica | Detalle |
|---|---|
| Marca | FUEGOSOLO |
| Número de modelo | SV52 |
| Tipo de fuente de luz | LED ultravioleta de 365 nm |
| Consumo de energía | 25 W |
| Salida de luz ultravioleta | 4800 mW |
| Material | Aleación de aluminio |
| Color | Negro |
| Fuente de poder | Funciona con pilas (recargables) |
| Tipo de batería | 1 Lithium-ion (Included) |
| Puerto de carga | USB tipo C |
| Peso del artículo | 380 gramos |
| Dimensiones del paquete | 18.4 x 8.8 x 5.7 cm |
| Características especiales | High Power, Rechargeable, Black Filter Lens |
11. Garantía y soporte
For warranty information or technical support, please refer to the documentation provided with your purchase or contact the retailer/manufacturer directly. Keep your purchase receipt as proof of purchase.

