1. Introduction
Product Overview
The Diyife NUSTAL332 Key Lock Box provides a secure and convenient solution for storing keys. This robust, weatherproof device features a 4-digit combination lock, offering 10,000 possible codes for enhanced security. Designed for versatility, it supports both door handle hanging and wall-mounted installations, making it suitable for various outdoor and indoor environments such as homes, garages, offices, or for temporary access needs.

Image 1.1: The Diyife NUSTAL332 Key Lock Box shown from the front with its combination dials, and an open view revealing its interior storage capacity for keys and other small items.
2. Package Contents
Please verify that all items listed below are included in your package:
- 1 x Diyife NUSTAL332 Key Lock Box with Code
- 4 x Screws
- 4 x Soft Rubber Screws (Wall Plugs)
- 1 x User Manual
3. Product Features
3.1 Dual Installation Methods
The key lock box offers two convenient installation options: it can be hung on a door handle, railing, or pipe using its removable shackle, or securely mounted to a wall or solid surface using the included hardware.

Image 3.1: Illustration of the two installation methods: hanging the lock box on a door handle and mounting it to a wall.
3.2 Large Capacity Storage
Designed to accommodate up to 9 house keys, the interior space is also suitable for storing car keys, access cards, or bank cards, preventing loss or forgotten keys.

Image 3.2: A visual comparison highlighting the larger internal capacity of the Diyife key lock box, capable of holding more keys and cards compared to standard models.
3.3 Secure 4-Digit Combination
The lock box features a 4-digit resettable combination, providing 10,000 unique code possibilities for enhanced security against unauthorized access.

Image 3.3: Details of the lock box, showing the 4-digit combination mechanism, an internal hook for key organization, and a protective dust cover.
3.4 Durable and Weatherproof Design
Constructed from weatherproof zinc alloy, the lock box is designed to withstand outdoor elements. Its flush-mount and impact-resistant access cover provides protection against tampering, hammering, sawing, or prying.
4. Setup and Installation
4.1 Setting Your Combination Code
The factory default code is 0-0-0-0. Follow these steps to set your personalized combination:
- Open the lock box by entering the default code 0-0-0-0 and pressing the button down.
- Locate the reset lever inside the lock box. Push the lever from position "A" to position "B".
- Rotate the combination dials to your desired 4-digit code. Choose a memorable code.
- Return the reset lever from position "B" back to its original position "A".
- Important: Take a photo or write down your new code immediately to prevent forgetting it. Once the code is reset, there is no master key or recovery method.

Image 4.1: Visual instructions demonstrating the process of setting a new 4-digit combination code for the lock box.
4.2 Mounting the Key Lock Box
Door Handle Hanging Installation
- Ensure the lock box is open and the shackle is extended.
- Hook the shackle over the desired door handle, railing, or pipe.
- Close the shackle securely into the lock box.
Wall Mounted Installation
- Choose a suitable, solid surface for mounting.
- Mark the positions for the four mounting holes using the lock box as a template.
- Drill pilot holes at the marked positions.
- Insert the soft rubber screws (wall plugs) into the drilled holes.
- Align the lock box with the holes and secure it using the provided screws.
5. Operation
5.1 Opening the Lock Box
- Rotate the combination dials to your set 4-digit code.
- Press the release button located below the dials.
- The front cover of the lock box will open, providing access to the contents.
5.2 Closing and Securing the Lock Box
- Place your keys or other items inside the lock box.
- Close the front cover firmly until it clicks into place.
- Scramble the combination dials to lock the box and conceal your code.

Image 5.1: Examples of the key lock box in use, both mounted on an exterior wall of a house and hung on an interior door handle.
6. Maintenance
- Regularly check the combination dials for smooth operation.
- Clean the exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Ensure the dust cover over the dials is properly seated to maintain weatherproof integrity.
7. Troubleshooting
- Cannot open the lock box: Ensure the correct 4-digit combination is entered and the release button is fully pressed. Verify the reset lever is in position "A".
- Dials are stiff: Apply a small amount of silicone-based lubricant to the dials if they become difficult to turn.
- Forgot the combination: Unfortunately, there is no override or master key. If the combination is forgotten, the lock box cannot be opened without knowing the code. It is crucial to record your code after setting it.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Diyife |
| Model Number | NUSTAL332 |
| Product Dimensions | 2"D x 2"W x 2"H (Approximate exterior) |
| Lock Type | 4-Digit Combination Dials |
| Capacity | 249 Cubic Centimeters (Holds up to 9 keys) |
| Material | Alloy Steel |
| Color | Black |
| Mounting Type | Wall Mount, Door Handle Hung |
| Water Resistance Level | Waterproof |
| Item Weight | 1.19 pounds |

Image 8.1: Diagram illustrating the external and internal dimensions of the key lock box.
9. Warranty and Support
For warranty information or technical support, please contact Diyife customer service through the retailer where the product was purchased. Please have your model number (NUSTAL332) and purchase details ready when contacting support.