1. Introduction
This manual provides essential information for the proper use and maintenance of your HID Corporation 1346 ProxKey III Key Fob. The ProxKey III is a compact, durable proximity access device designed for use with HID proximity readers. It offers a convenient and reliable solution for access control systems, allowing users to gain entry by presenting the fob to a compatible reader.
Please read this manual thoroughly before using the device to ensure optimal performance and longevity.
2. Product Overview
The HID ProxKey III is a small, teardrop-shaped key fob designed for easy attachment to a key ring. It features a robust construction of Acrylonitrile Butadiene Styrene (ABS) material, ensuring durability for daily use. The fob contains embedded electronics that communicate with proximity card readers to grant or deny access.

Image 1: Front view of the HID ProxKey III Key Fob. This image displays the dark gray casing with a lighter gray circular center, featuring the 'HID Prox' logo. The integrated key ring hole is visible at the top.
- Compact Design: Easily attaches to a key ring for convenient carrying.
- Durable Construction: Made from high-quality ABS plastic for resistance to wear and tear.
- Proximity Technology: Utilizes contactless technology for quick and secure access.
- Compatibility: Designed to work seamlessly with HID proximity readers.
3. Setup and Programming
The HID ProxKey III Key Fob is a passive device that requires programming into an existing access control system. It does not contain user-programmable features directly on the fob itself. Programming is typically performed by an authorized system administrator using the access control system's software and hardware.
3.1 System Integration
- Identify Fob Data: Each ProxKey III fob has a unique identification number (Facility Code and Card Number) embedded within it. This information is usually printed on the fob or can be read by a compatible programmer.
- Access Control System: The system administrator will use the access control software to add the unique identification number of each fob to the system's database.
- Assign Permissions: Once added, the administrator will assign specific access permissions (e.g., which doors, times of day) to each fob based on the user's requirements.
- Distribution: After successful programming and assignment, the fobs can be distributed to authorized users.
Note: If you are a user and your fob is not working, contact your system administrator for assistance. Do not attempt to modify or open the fob, as this may damage the device and void any potential warranty.
4. Operation
Using the HID ProxKey III Key Fob is straightforward once it has been properly programmed into your access control system.
4.1 Gaining Access
- Approach Reader: Hold the ProxKey III Key Fob within close proximity (typically 1-3 inches) of a compatible HID proximity card reader.
- Present Fob: Ensure the fob is presented flat against the reader for optimal communication.
- Wait for Indication: The reader will typically provide a visual (e.g., green light) or audible (e.g., beep) indication that access has been granted. If access is denied, the reader may show a red light or a different audible signal.
- Enter: Once access is granted, the door or gate will unlock, allowing entry.

Image 2: The HID ProxKey III Key Fob attached to a standard metal key on a keyring. This illustrates the compact size and how it integrates with everyday items.
5. Maintenance and Care
The HID ProxKey III Key Fob is designed for durability and requires minimal maintenance. Following these guidelines will help ensure its long-term functionality:
- Avoid Extreme Conditions: Do not expose the fob to extreme temperatures, direct sunlight for prolonged periods, or harsh chemicals.
- Keep Dry: While robust, the fob is not fully waterproof. Avoid submerging it in water or exposing it to excessive moisture.
- Clean Gently: If cleaning is necessary, wipe the surface with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Prevent Physical Damage: Avoid dropping the fob from significant heights or subjecting it to strong impacts, which could damage internal components.
- Do Not Disassemble: The fob is a sealed unit. Attempting to open it will likely damage the device and void any warranty.
6. Troubleshooting
If you encounter issues with your HID ProxKey III Key Fob, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fob does not grant access | Fob not programmed into the system. | Contact your system administrator to ensure the fob is correctly enrolled and active. |
| Fob grants intermittent access | Improper presentation to the reader; interference; damaged fob. | Ensure the fob is held steadily and flat against the reader. Remove other RFID devices (e.g., other cards, phones) from the immediate vicinity. If issues persist, the fob may be damaged; contact your administrator. |
| Reader does not respond to fob | Fob is incompatible with the reader (e.g., wrong encryption type). | Verify with your system administrator that the fob's technology (e.g., 24-bit, 36-bit encryption) matches the reader's requirements. HID ProxKey III fobs are typically 26-bit Wiegand format unless specified otherwise. |
| Physical damage to fob | Impact, crushing, or exposure to harsh elements. | A physically damaged fob may not function correctly. Replacement may be necessary. Contact your system administrator. |
7. Specifications
Detailed technical specifications for the HID Corporation 1346 ProxKey III Key Fob:
| Feature | Specification |
|---|---|
| Model | 1346 ProxKey III |
| Brand | HID |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Color | Gray |
| Dimensions (Length x Height x Thickness) | 1.25" (31.75 mm) x 1.55" (39.4 mm) x 0.24" (6 mm) |
| Item Weight | 0.16 ounces (4.54 g) |
| Operating Frequency | 125 kHz (standard HID proximity) |
| Read Range | Reader dependent, typically 1-3 inches |
| Operating Temperature | Consult HID product datasheet for specific range |

Image 3: Diagram showing the dimensions of the HID ProxKey III Key Fob, including length (1.25 inches / 31.75 mm), height (1.55 inches / 39.4 mm), and thickness (0.24 inches / 6 mm).
8. Warranty and Support
For specific warranty information regarding your HID ProxKey III Key Fob, please refer to the documentation provided at the time of purchase or contact your authorized HID distributor or system integrator. HID Global products typically come with a limited warranty against defects in materials and workmanship.
For technical support, programming assistance, or to report a faulty device, please contact your access control system administrator or the vendor from whom the fobs were purchased. Direct end-user support from HID Global may be limited, as these devices are typically integrated into larger security systems.
For general information about HID products, you may visit the official HID Global website: www.hidglobal.com





