RFID R/W 54 x 85 mm Rectangle Tag

  • 28441: RFID R/W 54 mm X 85 mm Rectangle Tag
Available after 3/31/2015.
Product ID 28441


This RFID Read/Write transponder tag is part of the EM Microelectronic-Marin SA EM4x50 family and is designed to work with our 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.

Key Features:

  • 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

Application Ideas:

  • 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 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.


  • Dimensions: 2.125 x 3.365 in. (5.4 x 8.55 cm)

Downloads & Documentation

Download Details More Info
RFID Read/Write Module Documentation - 132.99 KB | updated: 24 Sep 2012 - 3:57 pm
RFID Read/Write Module BASIC Stamp Demo Code - 4.21 KB | updated: 24 Sep 2012 - 3:59 pm