1. Introducción
The ALONEFIRE X901UV is a high-quality 365nm UV LED flashlight designed for professional and general use. With its powerful 10W output and 2400mW luminous power, it is highly effective for detecting fluorescent substances not visible to the naked eye. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your X901UV UV flashlight.

Figure 1: ALONEFIRE X901UV 365nm UV Flashlight with accessories.
This image displays the ALONEFIRE X901UV 365nm UV Flashlight, showcasing its compact black body, the UV light emitting from the front, and the included yellow UV protective glasses and USB-C charging cable. The flashlight features a side button for operation and a pocket clip.
2. Qué incluye
Your ALONEFIRE X901UV package should contain the following items:
- 1 x ALONEFIRE X901UV 365nm UV Flashlight
- 1 batería recargable de iones de litio (preinstalada o separada)
- 1 x USB Charging Cord (Type-C)
- 1 x Pair of UV Protective Glasses
3. Precauciones de seguridad
Para garantizar un funcionamiento seguro y evitar lesiones, lea y respete las siguientes pautas de seguridad:
- NO shine the UV light directly into eyes. Prolonged exposure can cause eye damage.
- Always wear the included UV protective glasses when operating the flashlight.
- Mantener fuera del alcance de los niños.
- Do not disassemble the flashlight. This may void the warranty and cause damage.
- Avoid exposing the flashlight to extreme temperatures or direct sunlight for extended periods.
- Do not immerse the flashlight in water. While durable, it is not designed for underwater use.
4. Configuración y carga
4.1. Instalación de la batería (si no está preinstalada)
- Desenrosque la tapa trasera de la linterna.
- Insert the included rechargeable Lithium-Ion battery with the positive (+) end facing towards the flashlight head.
- Vuelva a atornillar la tapa trasera de forma segura.
4.2. Cargando la linterna
The ALONEFIRE X901UV features a convenient USB-C charging port.
- Localice el puerto de carga USB-C en el cuerpo de la linterna.
- Connect the included USB-C charging cord to the flashlight's port.
- Connect the other end of the USB-C charging cord to a compatible USB power source (e.g., wall adapter, computer USB port, power bank).
- La luz indicadora de carga se iluminará:
- Rojo: Carga en curso.
- Verde: Completamente cargado.
- La carga suele tardar entre 5 y 7 horas para una carga completa.

Figure 2: USB-C Charging Port and Indicator.
This image illustrates the USB-C charging port on the flashlight and the charging indicator lights. It shows the red light indicating charging and the green light indicating a full charge, along with estimated charging and battery life times.
5. Instrucciones de funcionamiento
5.1. Encendido/Apagado
Press the side switch button to turn the flashlight ON. Press the button again to turn it OFF.

Figure 3: Holding the Flashlight.
This image shows a hand comfortably gripping the ALONEFIRE X901UV flashlight, highlighting its ergonomic design and the accessible side switch.
5.2. Aplicaciones
The 365nm UV flashlight is versatile and can be used for various detection and curing purposes:
- Detección de orina de mascotas: Ideal for locating hidden pet urine stains on carpets, rugs, and furniture.
- Detección de escorpiones: Scorpions fluoresce under 365nm UV light, making them easy to spot in dark environments.
- Autenticación de moneda y documentos: Reveals security features on banknotes, passports, and other official documents.
- Inspección de minerales y piedras preciosas: Many minerals and gemstones exhibit fluorescence under UV light.
- Curado de resina: Suitable for curing UV-sensitive resins and glues.
- Bed Bug Detection: Helps identify bed bugs and their eggs.
- Pesca: Can be used to charge luminous fishing lures.

Figure 4: Diverse Uses of the X901UV.
This collage of images demonstrates various practical applications of the UV flashlight, including detecting pet urine, authenticating currency, identifying scorpions, and revealing hidden marks on surfaces.
5.3. Black UV Filter Lens
The X901UV is equipped with a hard toughened black filter optical lens. This specialized lens filters out unwanted visible light from the environment, ensuring that the emitted ultraviolet light is purer and more powerful, enhancing detection capabilities.

Figure 5: Black UV Filter Lens Function.
This diagram illustrates how the black UV filter lens on the flashlight works by blocking undesired ambient light, allowing only the pure UV light to pass through, which results in a more effective blacklight.
6. Mantenimiento
6.1. Limpieza
Limpie el cuerpo de la linterna con un paño suave.amp Paño. No utilice limpiadores abrasivos ni disolventes. Mantenga la lente limpia para un rendimiento óptimo.
6.2. Almacenamiento
Store the flashlight in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, it is recommended to charge the battery periodically to maintain its health.
7. Solución de problemas
If you encounter issues with your ALONEFIRE X901UV flashlight, refer to the table below for common problems and solutions.
| Problema | Posible causa | Solución |
|---|---|---|
| La linterna no se enciende. | La batería está agotada o no está instalada correctamente. | Charge the battery fully. Ensure the battery is inserted correctly with the positive end facing the head. Check that the tail cap is screwed on tightly. |
| La luz es tenue o parpadea. | Carga de batería baja. | Recargar la batería. |
| El indicador de carga no funciona. | Problema con el cable de carga o la fuente de alimentación. | Prueba con otro cable USB-C o adaptador de corriente. Asegúrate de que las conexiones sean seguras. |
| Flashlight gets hot during prolonged use. | Normal operation for high-power UV LEDs. | This is normal due to the 10W power output and aluminum alloy shell designed for heat dissipation. If it becomes excessively hot, turn it off and allow it to cool. |
8. Especificaciones
| Característica | Detalle |
|---|---|
| Marca | FUEGOSOLO |
| Modelo | X901UV_US2 |
| Característica especial | Durable, Rechargeable, Stain Detector |
| Color | Negro |
| Fuente de poder | Funciona con pilas |
| Tipo de fuente de luz | ultravioleta (365nm) |
| Material | Aluminio anodizado |
| Componentes incluidos | 365nm UV Flashlight, Battery, USB Charging Cord, UV Protective Glasses |
| Volumentage | 5 voltios |
| Composición de las celdas de la batería | Iones de litio |
| Número de baterías | 1 (incluido) |
| Brillo | 2400 lumen (luminous power) |
| Quétage | 10 vatios |
| Peso del artículo | 11.7 onzas |
| Dimensiones del paquete | 7.36 x 3.39 x 2.24 pulgadas |
9. Garantía y soporte
For warranty information or technical support, please contact ALONEFIRE customer service through the retailer where you purchased the product or visit the official ALONEFIRE webSitio web. Conserve su comprobante de compra para reclamaciones de garantía.

