The Grove 125KHz RFID Reader from Seeed Studio can measure RFID tags within 70mm when using uem4100 cards. The reader is supplied with a detachable, plug-in antenna. You can choose between two output formats, Uart or Wiegand.
Operating voltage: 4.75 to5.25V DC
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-bit packet, 1 even verify bit, 24 data bits, and 1 odd verify bit
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