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All prices US$ - All orders receive free delivery, worldwide - Touch here to learn more

125KHz EM4100 RDM6300 RFID Reader

SKU 113990014

Now available from PMD Way is this classic RFID reader, as used in many Arduino projects. The RDM 125KHz card mini-module is designed for reading code from 125KHz card compatible read-only tags and read/write cards.

It can be applied in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc.

Don't forget to stock up on 125 kHz RFID tags!


  • Supports external antenna
  • 5V operating voltage and I/O
  • 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
  • includes external antenna
  • Note: Module will notify whenever 125khz tag approaches, tag serial number will be sent via TX pin.


  • Frequency: 125kHZ
  • Baud rate: 9600
  • Interface: TTL level RS232 format
  • Working voltage: DC 5V(+/-5%)
  • Working current: <50mA
  • Receive distance: 20~50mm
  • Working temperature: -10°C~+70°C
  • Storage temperature: -20°C~+80°C
  • Humidity: 0~95%
  • Wiring size: 46 x 32 x 3mm

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