10-Pack 125KHz TK4100 RFID Cards – Access Control ID Cards
10-Pack 125KHz TK4100 RFID Cards – Access Control ID Cards
10-Pack 125KHz RFID Access Control ID Cards (TK4100/EM4100)
Keep your access control, time attendance, or smart entry systems running smoothly with this set of 10 slim RFID ID cards. Featuring the reliable TK4100 / EM4100 chip and operating at 125KHz, these white PVC cards are a drop-in solution for schools, offices, residential buildings, and IoT projects that rely on proximity card readers.
Key Features
- Chip: TK4100 / EM4100 — industry-standard 125KHz read-only chip
- Frequency: 125KHz — compatible with the majority of standard RFID readers
- Card Thickness: 1.8mm ± 0.02mm — slim yet durable profile
- Read Range: 3–8 cm for reliable, contactless scanning
- Material: High-quality PVC encapsulation for everyday durability
- Color: Clean white — easy to label or badge-print
- Quantity: 10 cards per pack — great value for system setup or replacements
Typical Applications
- Door access control systems for offices, schools, and residential complexes
- Employee or student time & attendance tracking
- Enterprise one-card systems
- IoT smart-home and building automation projects
- Parking and gate management
Specifications at a Glance
| Model | LK18 |
| Chip Type | TK4100 / EM4100 |
| Operating Frequency | 125KHz |
| Thickness | 1.8mm ± 0.02mm |
| Read Distance | 3–8 cm |
| Encapsulation | PVC |
| Color | White |
| Pack Quantity | 10 cards |
| Country of Origin | Made in China |
Why Choose These RFID Cards?
The TK4100 chip is one of the most widely supported 125KHz formats globally, ensuring broad compatibility with access readers, attendance terminals, and smart-lock systems. The sturdy 1.8mm PVC construction resists everyday wear, while the smooth white surface can be printed on or slotted into standard ID card holders. Whether you are setting up a new system or stocking up on replacements, this 10-pack delivers consistent, dependable performance.
For general guidance on electronic access control and physical security standards, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: Are these 125KHz RFID cards compatible with standard access control readers?
A: Yes. These TK4100/EM4100 cards operate at 125KHz, the most common frequency used by access control readers, door entry systems, and attendance terminals worldwide. Always confirm your reader accepts the EM4100/TK4100 protocol before purchasing.
Q: Can I write or reprogram the data on these RFID cards?
A: No. The TK4100/EM4100 chip is a read-only chip. Each card ships with a factory-programmed, unique ID number that cannot be overwritten. If you need writable/rewritable cards, you would require a different chip format such as T5577.
Q: What is the read range of these cards?
A: Under typical conditions the cards are detected at a distance of 3–8 cm from a compatible 125KHz reader. Actual range may vary slightly depending on your specific reader's antenna strength.
Q: How many cards come in the pack?
A: Each order includes 10 white RFID ID cards, making it ideal for initial system setup, batch enrollment, or keeping spares on hand for replacements.