Introducción
The Master Lock No. X055ML large digital combination safe is designed for protecting valuable items such as laptops, jewelry, documents, money, and other electronics within a home environment. Its internal dimensions are suitable for A4-sized documents. This safe features a programmable electronic lock, allowing users to set their own combination, and includes an override key for access in case of a forgotten code. The interior is carpeted to prevent scratching of stored items. For enhanced security, the safe can be bolted down using the included hardware, preventing unauthorized removal. The robust steel construction and pry-resistant door with two live-locking bolts provide a high level of security for your belongings.
Información de seguridad
- Always keep the override keys in a secure location away from the safe. Do not store them inside the safe.
- Ensure the safe is securely bolted down to a floor or wall to prevent unauthorized removal, if applicable.
- No almacene materiales inflamables ni recipientes abiertos con líquidos dentro de la caja fuerte.
- Keep the keypad clean and dry to ensure proper operation.
- Reemplace las baterías rápidamente cuando aparezca el indicador de batería baja para evitar quedarse bloqueado.
Contenido del paquete
- 1 x Master Lock Security Safe (Model X055ML)
- 2 x Override Keys
- 1 x Bolt Down Kit (for securing the safe)
- Manual de usuario (este documento)
Configuración
1. Instalación de la batería
The safe requires 4 AA batteries (not included) for the electronic lock to function. The battery compartment is located on the inside of the safe door. Open the safe using the override key if it is currently locked.
- Localice la tapa del compartimiento de la batería en el interior de la puerta de la caja fuerte.
- Remove the cover by sliding it or unscrewing it, depending on the design.
- Inserte 4 pilas AA nuevas, asegurándose de la polaridad correcta (+/-).
- Vuelva a colocar la tapa del compartimiento de la batería de forma segura.

Figure 1: Inside of the safe door, highlighting the battery compartment and live-locking bolts.
2. Configuración de su combinación personal
Upon first use, or after battery replacement, you will need to set your personal combination. The factory default code is typically 1-2-3-4, but it is highly recommended to change it immediately.
- Con la puerta de la caja fuerte abierta, ubique el botón de reinicio rojo en el interior de la puerta, cerca del compartimiento de la batería.
- Press the red reset button. The yellow light on the keypad will illuminate.
- Enter your new 3 to 8 digit combination on the keypad.
- Press the "A" or "B" button (or "#" or "*" depending on model) to confirm. The yellow light will turn off, indicating the new code is set.
- Test your new combination with the door open to ensure it works correctly before closing the safe.
3. Securing the Safe (Optional)
For maximum security, the safe can be bolted to a floor or wall using the included bolt-down kit. This prevents unauthorized removal of the safe.
- Choose a suitable location for the safe, such as inside a wardrobe or cabinet.
- Marque los puntos de perforación a través de los orificios pretaladrados en la parte inferior o trasera de la caja fuerte.
- Drill pilot holes into the mounting surface using an appropriate drill bit.
- Align the safe with the drilled holes and secure it using the provided bolts and washers.

Figura 2: Example of safe placement within a cabinet for secure storage.
Instrucciones de funcionamiento
1. Opening the Safe with Digital Combination
- Enter your personal 3 to 8 digit combination on the keypad.
- Press the "A" or "B" button (or "#" or "*" depending on model) to confirm.
- If the code is correct, the green light will illuminate. Within 5 seconds, turn the knob clockwise to open the safe door.
- If an incorrect code is entered, the yellow light will flash. After three incorrect attempts, the safe will enter a lockout period.

Figura 3: Frente view of the safe with the digital combination lock.
2. Opening the Safe with Override Key
The override key provides emergency access to the safe, useful if batteries are depleted or the combination is forgotten.
- Localice el ojo de la cerradura, generalmente oculto detrás de una pequeña cubierta en el panel del teclado.
- Insert one of the provided override keys into the keyhole.
- Turn the key clockwise while simultaneously turning the knob clockwise to open the safe door.
- Remove the key once the safe is open.
3. Cierre y bloqueo de la caja fuerte
To lock the safe, simply close the door and turn the knob counter-clockwise until the bolts engage. The electronic lock will automatically secure the safe.
Mantenimiento
1. Reemplazo de la batería
When the batteries are low, the red light on the keypad may flash or the safe may not respond to combination entries. Replace all 4 AA batteries as described in the "Battery Installation" section under Setup.
2. Limpieza
Limpie el exterior de la caja fuerte con un paño suave y húmedo.amp cloth. Do not use abrasive cleaners or solvents. Keep the keypad and internal components dry.
Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La caja fuerte no se abre con combinación. | Incorrect combination entered; low batteries. | Re-enter combination carefully. Replace batteries. Use override key. |
| Las luces del teclado no se iluminan. | Baterías muertas o instaladas incorrectamente. | Reemplace las 4 baterías AA, asegurándose de la polaridad correcta. |
| La puerta de la caja fuerte no cierra correctamente. | Obstrucción en el marco de la puerta; pernos no completamente retraídos. | Check for obstructions. Ensure the knob is fully turned to retract bolts before closing. |
| Combinación olvidada. | Combination lost or forgotten. | Use the override key to open the safe, then reset the combination. |
Presupuesto
| Característica | Detalle |
|---|---|
| Número de modelo | X055ML |
| Exterior Dimensions (HxWxD) | 13.78" H x 8.66" W x 10.63" D (22 x 35 x 27 cm) |
| Dimensiones interiores (alto x ancho x profundidad) | 21.6 cm de alto x 34.6 cm de ancho x 22 cm de profundidad |
| Capacidad | 16 litros |
| Peso | 14.11 libras (6400 gramos) |
| Tipo de bloqueo | Digital Combination with Key Override |
| Material | Acero aleado |
| Fuente de poder | Funciona con pilas (se requieren 4 pilas AA, no incluidas) |
| Características especiales | Pry-resistant door, two live-locking bolts, carpeted floor, bolt-down hardware included. |

Figura 4: Dimensiones detalladas de la caja fuerte.
Garantía y soporte
This Master Lock product is covered by a 1-year spare part availability duration in the EU. For specific warranty details, technical support, or to inquire about replacement parts, please refer to the official Master Lock webSitio web o contacte directamente con el servicio de atención al cliente. Conserve el recibo de compra para reclamaciones de garantía.
Para obtener más ayuda, visite el Tienda Master Lock en Amazon.