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Discontinued Grove - 125KHz RFID Reader

Grove - 125KHz RFID Reader

  • Brand: Seeedstudio
  • Product Code: GRV-RFID
  • Availability:
  • Warranty Period: 12 months

The Grove-125KHz RFID Reader is a module used to read uem4100 RFID card information with two output formats: Uart and Wiegand. It has a sensitivity with maximum 7cm sensing distance.

For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.


  • Selectable output format: Uart or Wiegand.
  • 4Pins Electronic Brick Interface
  • High Sensitivity


  • Voltage: 4.75V - 5.25V
  • Working Frequency: 125 KHz
  • Sensing Distance (Max): 70mm
  • TTL Output: 9600 baudrate, 8 data bits, 1 stop bit, and no verify bit
  • Wiegand Output: 26 bits Wiegand format, 1 even verify bit, 24 data bits, and 1 odd verify bit

Packing List:

  • 1 x Grove - 125KHz RFID Reader 


Getting Started:

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Does the module have indicating LEDs that indicate a successful read? ( Richard, 28/05/2019 )

Hi, yes it is. The LED will blink.

Hi, what is the inductance of this antenna? ( Ng Hwee, 09/12/2018 )
Hi, the antenna inductance is 475uH. 
Do u hav 125kHz RFID writer? ( Aliza, 23/10/2018 )

Hi, sorry we don't have 125kHz RFid Writer. Thanks.

hi....can this rfid reader read uhf rfid inlay? ( edlan, 22/03/2018 )
Hi, 125KHz RFid Reader doesn't support UHF RFid inlay. Thanks.

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Tags: grove, 125khz, rfid, reader, grv-rfid