RDM6300 RFID Reader - 125kHz - RDM6300 - TinyTronics
Frequency: 125 kHz. Baud rate: 9600. EM4100 protocol compatible. Output: Serial UART. Read distance: max 5cm. Dimensions PCB (lxbxh): 38.5x19x9mm (with pins) Dimensions coil (lxbxh): 46x32x3mm. Pinout: See pictures. See the following page to get started with the RFID reader and an Arduino: How to use the RDM630/RDM6300 RFID reader.