EM-18 RFID Reader with RS 232

This module directly connects to any microcontroller UART or through a RS232 converter to PC.It gives UART/Wiegand26 output. This RFID Reader Module works with any 125 KHz RFID tags.


  • 5VDC through USB (External 5V supply will boost range of the module)

RS232 interface format

  • 10 ASCII DATA (card no.)+ 2 ASCII DATA (XOR result)
  • E.g. Card number is 4500C5D1E9B8 read from reader then the card number on card will be as below.
  • 45 – Preamble
  • 00C5D1E9 value in Hex = 12964329. / B8 is XOR value for (45 XOR 00 XOR C5 XOR D1 XOR E9)

Hence number on the card is 0012964329.

  • Data baud rate: 9600 bps
  • Data bit 8 bits
  • Parity check: None
  • Stop bit


There are no reviews yet.

Be the first to review “EM-18 RFID Reader with RS 232”

Your email address will not be published. Required fields are marked *