125kHz RFID Card with Printed Serial, EM4100/TK4100 Compatible
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Prices updated: 12 Oct 2026
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About this product
A 125 kHz RFID card in white PVC with a printed serial number, supplied as one piece. It carries a read-only UID compatible with EM4100 and TK4100 systems. It is used for attendance tracking, access control and DIY RFID reader projects.
Specifications
- Frequency
- 125 kHz
- Compatibility
- EM4100 / TK4100
- Data type
- Read-only UID
- Material
- White PVC
- Marking
- Printed serial number
- Quantity
- 1 pc
Frequently asked questions
Which readers work with this card?
Any 125 kHz reader that supports the EM4100 or TK4100 protocol should read it.
Can I write new data to the card?
No. The listing describes the UID as read-only, so the stored ID cannot be rewritten.
