RFID Tag - 125kHz (retail pack of 5)

If you've been playing with RFID long enough, you know you can never have enough RFID tags! We've retail packaged a stack of five of our 125kHz RFID tags for when your RFID-protected secret clubhouse starts attracting more members (or whatever it is *you *do with RFID tags...)

These tags each have a unique 32-bit ID code and can't be re-programmed. You can read the codes on the tags with a 125kHz RFID reader, such as the ID-12 or the ID-20 which can be found in the related items below.

Note: This version comes with blank, unbranded RFID cards.


  • 5x 125kHz RFID Cards
  • EM4001 ISO based RFID IC
  • 125kHz Carrier
  • 2kbps ASK
  • Manchester encoding
  • 32-bit unique ID
  • 64-bit data stream [Header+ID+Data+Parity]
  • Each card is 2.13 x 3.35 x 0.03" (54 x 85.5 x 0.8mm)

RFID Tag - 125kHz (retail pack of 5) Product Help and Resources

SparkFun RFID Starter Kit Hookup Guide

May 5, 2015

Learn the basics of how to get started with the SparkFun RFID Starter Kit.


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Zachmarius / about 8 years ago / 1

    Why would we purchase a pack of 5 here when you could purchase 5 individuals here for only $9.75?

    • You probably wouldn't, unless you're in the subset of our customers who stock SparkFun product on a physical retail display rack.

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