empowering creative people

125Khz RFID module - UART (Seeed Studio)

SKU: SS113990014

$21.13 AUD, inc GST
$19.21 AUD, exc GST

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125Khz RFID module - UART (Seeed Studio)
21.13 AUD

SKU: SS113990014

$21.13 AUD, inc GST
$19.21 AUD, exc GST


  • $6.95 Standard (2-4 days, tracked)
  • $8.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

Use this module to bring RFID access-control to your next project. Whenever a tag is detected, the tag ID will be sent out over UART ready for your personal identification or access control projects! Connect it straight to an Arduino UNO, or shift the logic-level to suit a Raspberry Pi.


  • Supports external antenna

  • Maximum effective distance up to 50mm

  • Less than 100ms decoding time

  • UART TTL interface

  • SupportEM4100 compatible read-only or read/write tags

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

  • Small footprint design

Includes: External Antenna *1


Seeed studio maintain a 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. 


Documentation and Resources:

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!