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 1.Specifications 5VDC through USB (External 5V supply will boost range of the module) Current: <50mA Operating Frequency: 125Khz Read Distance: 10cm Size of RFID reader module: 32mm(length) * 32mm(width) * 8mm(height) 2. 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. 1. Data baud rate: 9600 bps 2. Data bit 8 bits 3. Parity check: None 4. Stop bit