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RFID Tag (125kHz)

You might know RFID as the technology that Big Brother uses to track your every move. Quickly, don the tinfoil hats!!

Only kidding. RFID is useful for sensing and identifying tagged people and objects for access control, automation and a whole range of different applications. This basic RFID tag works in the 125kHz RF range and comes with a unique 40-bit ID. It is not reprogrammable.

This blank, smooth, mildly flexible RFID tag is ready for your logo (or hand-drawn scribble).

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

RFID Tag (125kHz) Product Help and Resources

SparkFun Qwiic RFID-IDXXLA Hookup Guide

March 14, 2019

The Qwiic RFID ID-XXLA is an I2C solution that pairs with the ID-LA modules: ID-3LA, the ID-12LA, or the ID-20LA, and utilizes 125kHz RFID chips. Let's take a look at the hardware used for this tutorial.

SparkFun RFID Starter Kit Hookup Guide

May 5, 2015

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

Build a Qwiic Jukebox that is Toddler Approved!

March 29, 2019

Follow this tutorial to build your own custom jukebox. Note, this is designed simple and tough for use primarily with toddlers. It's also a great introduction to SparkFun's Qwiic products!

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