RFID Read/Write 54 x 85 mm Rectangle Tag (Use with Write Module)

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$4.95 ea

7 Days Lead Time

  • Jameco Part no.: 2123522
  • Manufacturer: Parallax
  • Manufacturer no.: 28441
  • NCNR (Non-Cancelable, Non-Returnable)
  • HTS code: 8542390000
  • Web Exclusive
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RFID Read/Write 54 x 85 mm Rectangle Tag

This RFID Read/Write transponder tag is part of the EM Microelectronic-Marin SA EM4x50 family and is designed to work with the RFID Read/Write Module, Serial (#28440). Each tag contains a unique, read-only serial number (one of 2^32, or 4,294,967,296 possible combinations) and 116 bytes of user data area stored in a non-volatile EEPROM (Electrically Erasable Read Only Memory). The user data area can be optionally secured with a 32-bit password to allow only authorized read and write operations.


  • Thin package makes it ideal for access badge applications
  • Both sides are fully printable with offset, thermo-transfer and dye sublimation printing
  • Designed to resist common stress known from access control and time attendance systems
  • EM Microelectronic-Marin SA EM4x50 family chip
  • 125 kHz operating frequency
  • Dimensions: 2.125 x 3.365 in. (5.4 x 8.55 cm)


  • Room access
  • User authentication
  • User data storage
  • These tags are not compatible with the RFID Card Reader (USB or Serial).
  • Not recommended for use in direct sunlight. Use RFID R/W Round Tags (#32399) instead, as they are made with a more rugged outer casing.
  • In accordance with U.S. Patent Nos. RE40,145; 5,817,207; 6,036,099; 6,214,155; 6,514,367; and 6,557,766.

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Sensor TypeRFID

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