Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Fosmon TSA Approved 3-Digit Combination Luggage Lock. Designed for security and convenience, these locks allow you to protect your belongings while complying with travel security regulations.
Product Features
- TSA Accepted: Allows TSA agents to inspect luggage without damaging the lock, using a universal key.
- Sturdy and Durable Construction: Features a zinc alloy body and hardened steel shackle, built to withstand travel conditions.
- 3-Digit Combination: Offers 1,000 possible combinations for enhanced security, eliminating the need for keys.
- Open Alert Indicator: A red indicator pops up if the lock has been opened by TSA, providing notification of inspection.
- Universal Compatibility: Suitable for luggage, backpacks, gym lockers, gun cases, and other items requiring security.

Image: A set of three Fosmon TSA Approved 3-Digit Combination Locks, showcasing their design and compact size.
Setup: Setting Your Combination
Your lock is factory preset to 0-0-0. Follow these steps to set your personal combination:
- Ensure the lock is set to the current combination (initially 0-0-0) and pull up the shackle to open the lock.
- With the shackle open, rotate it 90 degrees counter-clockwise.
- Press the shackle down firmly into the lock body. While holding it down, rotate it another 90 degrees counter-clockwise (total 180 degrees from the original open position).
- Set your desired 3-digit combination by turning the dials to align with the convex line.
- Once your new combination is set, turn the shackle back to its normal upright position and release it. The new combination is now set.
Important: Please write down your new combination and keep it in a safe place. There is no master key or reset button if the combination is forgotten.

Image: Visual guide for setting a new 3-digit combination on the lock.
Video: A demonstration of how to set the combination on a Fosmon TSA lock. This video shows the process of rotating the shackle, pressing it down, setting the numbers, and returning the shackle to lock in the new combination.
Operating Instructions
Opening the Lock
- Align the dials to your set 3-digit combination.
- Pull the shackle upwards to release it from the lock body.
Closing the Lock
- Insert the shackle back into the lock body.
- Scramble the dials to a random combination to secure the lock.
TSA Inspection Feature
The lock features a red pop-up indicator. If this indicator is raised when you retrieve your luggage, it signifies that the Transportation Security Administration (TSA) has opened and inspected your bag. The TSA uses a special key to open these locks without damaging them, and they are designed to relock after inspection.

Image: Close-up of the Fosmon TSA lock highlighting the TSA Accepted logo and the keyhole for official inspections.
Maintenance
To ensure the longevity and smooth operation of your Fosmon TSA lock, follow these simple maintenance guidelines:
- Keep the lock clean and free from dirt or debris. Wipe with a soft, dry cloth.
- Avoid exposing the lock to extreme temperatures or harsh chemicals.
- Periodically check the dials for smooth rotation. If they become stiff, a small amount of graphite lubricant can be applied.
Troubleshooting
Lock Will Not Open
- Ensure the dials are precisely aligned with your set combination. Sometimes a slight misalignment can prevent opening.
- Verify that you are using the correct combination. If you have forgotten your combination, unfortunately, there is no way to reset it without knowing the original code.
Shackle is Stiff or Difficult to Move
- Check for any foreign objects or debris obstructing the shackle mechanism.
- Apply a small amount of lubricant (e.g., graphite powder) to the shackle and the dial mechanism to improve movement.
Specifications
| Feature | Detail |
|---|---|
| Brand | Fosmon |
| Model Name | Lock |
| Item Model Number | 51015HOM |
| Lock Type | Combination Lock |
| Material | Alloy Steel, Zinc |
| Color | Black |
| Number of Pieces | 3 (for this pack) |
| Item Dimensions (L x W x H) | 1.26 x 2.44 x 0.51 inches |
| Item Weight | 7.7 ounces |
| Special Feature | Universal Compatibility, Open Alert Indicator |
| UPC | 879561097251 |
Warranty and Support
Fosmon offers a Limited Lifetime Warranty for this product. For any inquiries or support, please contact our experienced and dedicated USA-based customer service team. Details on how to reach customer service can typically be found on the product packaging or the official Fosmon website.