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125Khz RFID module - UART

SKU 113990014
  • effective distance: 50mm
  • Less than 100ms decoding time
  • UART TTL interface
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$12.50 1 pcs
$11.25 10 pcs
$10.63 20 pcs
$10.00 50 pcs

One of the coolest part of IoT project must be the identification technology, 125Khz RFID module – UART is the most popular RFID module that produced by Seeed, By connecting this RFID module to Arduino or Raspberry Pi, you are able to build projects that can be used in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc.


  • Support external antenna

  • Maximum effective distance up to 50mm

  • Less than 100ms decoding time

  • UART TTL interface

  • Support EM4100 compatible read only or read/write tags

  • Built-in external bi-color LED and buzzer driver

  • Small outline design

Including: External Antenna *1

Note:Module will notify whenever 125khz tag approaches, tag serial number will be send via TX pin. Easy way for a RFID module on MCU projects or PC connnection via UartSB.


Please visit our wiki page for more info about this product. It will be appreciated if  you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.


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★★★★★ Great bag
Purchased this for my 23 year old daughter in the butterscotch color. Great versatile color. She loves the size -- perfect for day or going out at night. Chain can be double to shorten for nighttime and left long to wear as a crossbody during the day.
September 2, 2013 by
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