125KHz RFID Cards Supplier
We supply a wide range of 125Khz RFID cards, ideal for access control, time attendance, and identification systems. Our cards support TK4100, T5577, and EM4200 chips, offering reliable performance and compatibility with most 125Khz RFID readers.
Choose from standard thin cards or durable clamshell cards. We offer full customization, including printing, encoding, and serial number options. As a custom 125Khz RFID card supplier, we provide fast production, stable quality, and competitive pricing for bulk smart card orders.
Selection guide
| Use case | Recommended option | Notes |
|---|---|---|
| Legacy access control | 125KHz LF RFID card | Use when the existing reader or controller requires LF card compatibility. See the T5577 RFID Card or TK4100 RFID Card for common 125kHz options. |
| Staff or member ID | Custom printed 125KHz card | Combine LF functionality with logo printing, numbering or personalization needs. The Blank Chip Card is a practical base for printed staff IDs. |
| Replacement card projects | Reader-compatible LF card | Confirm the existing card type, reader model or chip requirement before ordering. See the Blank RFID Clamshell Card for a thicker replacement format. |
| Unsure frequency | Check reader specification first | 125KHz cards are not interchangeable with HF/NFC or UHF systems. |
FAQ
What are 125KHz RFID cards used for?
They are commonly used in LF access control, identification and legacy card systems that require 125KHz compatibility.
Can 125KHz RFID cards be custom printed?
Yes. Many 125KHz card projects can support custom printing, numbering or other personalization depending on requirements.
Are 125KHz cards compatible with NFC readers?
No. NFC generally uses 13.56MHz HF technology. Always confirm reader frequency before selecting a card.
What details should I provide for a quote?
Provide the reader model, existing card type or required chip, plus quantity, artwork and personalization requirements.
What's the difference between T5577, TK4100 and EM4200 chips?
T5577 is rewritable and commonly used for card-cloning and access-system upgrades. TK4100 and EM4200 use a fixed, non-rewritable code and are typically lower cost for straightforward proximity access. Choose based on whether your project needs rewritable capability.
Are 125KHz cards secure for access control?
125KHz LF cards transmit an unencrypted ID and are considered legacy technology. For higher security requirements, HF cards with encrypted chips such as MIFARE DESFire are usually recommended instead.
Can 125KHz cards be used with mobile phones?
No. Smartphone NFC hardware operates at 13.56MHz, so 125KHz cards cannot be read or emulated by phones. For phone-based interactions, choose an HF or NFC card instead.
What card formats are available for 125KHz chips?
125KHz chips can be supplied in standard thin PVC cards or thicker, more durable clamshell card formats, depending on your durability and reader-slot requirements.
Related resources
- Different Frequency Cards — Compare all frequency options
- 13.56MHz RFID Cards — Higher-frequency card category
- Blank RFID Cards — Full range of blank cards for bulk orders
- PVC Cards — PVC material card category
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