RFID Button - 16mm (125kHz)

The Sparkfun RFID Button, with a diameter of 16mm and a thickness of 1.85mm, is a compact RFID tag that operates at a frequency of 125kHz. It is embedded with a unique 32-bit non-reprogrammable ID and utilizes the EM4001 ISO based RFID IC with Manchester encoding. This small tag is ideal for sensing presence, identification, and more, as it can be seamlessly sewn into clothing or inserted into enclosures.

When used with Sparkfun's ID-2, ID-12, or ID-20 RFID readers, this RFID button performs exceptionally well. In tests using an ID-12 reader, it demonstrated a maximum read distance of approximately 32mm. This makes it a reliable choice for a variety of applications where accurate and efficient RFID sensing is required.

The Sparkfun RFID Button's small size and unique ID feature make it an excellent choice for projects requiring personal identification or item tracking. It can be used in a variety of settings, from clothing retail to inventory management, providing a seamless and efficient way to track and identify items or individuals.

Its non-reprogrammable nature ensures the security and integrity of the data associated with each tag. The Manchester encoding further enhances the reliability of data transmission, making it a trustworthy choice for sensitive applications.