Check the listing for details. IC + EM/ID dual frequency DC5V WG26/34 Serial Port UART RFID Reader Module. Condition: New. Listed at 4.95 USD. Descripition： Voltage: DC 5VCurrent: 40mASupport: read EM / ID 125kHz and S50 / S70 IC 13.56MHz cardsSupport: read EM / ID 125kHz and S50 / S70 IC 13.56MHz cardsInterface: Wiegand, UART UART module with 3pin cable,WG module with 5 pin cable.UART board only. If WG format is required, Please weld the wire yourself. Interface Description:5v D1 D0/TXD GND CSTPower supply: DC 5V power supply, choose linear power supply can get better card reading effectD1: WG outputs data1, Data0The pin of Data0 or UART module output by d0 / TXD WG is the serial port data output terminalCST: W26 / 34 format selection (hanging means W26, grounding means W34) also has other functions Introduction to Wiegand interface output: 1. When a card is sensed, the serial number of the card will be output through Data0 and data1.2. Data0 and data1 are both high level without data output. 3. Data bit 0: a 400 US wide low level is generated on the Data0 line.4. Data bit 1: generate a 400us wide low level on data1 line.5. The length of each bit of data is 2400us6. Each Mifare card has a 4-byte serial number. We output the last three bytes.7. Add the first 12 bit even parity check bit in the front, and add the last 12 bit odd parity bit after it, with a total of 26 bits of data.8. Card number: 6B 3D 12 D69. Output data: 3D 12 D6 Weigand 26 ： 000111101 0001001011010110 1even parity3D 12D6Odd parity Weigand 34 : 00110101100111101 0001001011010110 0even parity6B3D 12D6Odd parity Uart Interface output：Baud rate：9600Start datalengthCard typeCard dataBCC checkEnd of data0x020x090x01SN0~SN3Exclusive or operations other than the beginning and end of data0x03 Among them, the card types are:0x02 EM41000x01 MIFARE 1K For example, the data received by the serial port tool is 02 09 02 04 2E 53 82 F03 The first byte, 0x02, indicates the beginning of the data.The second byte, 0x09, indicates that the whole data length is 9 bytes, including data start and data end.The third byte, 0x02, indicates that the card type is em4100.The fourth byte to the seventh byte (0x04 0x2e 0x53 0x82) indicates the card number read.The 8th byte, 0xf0, represents the BCC check from the 2nd byte to the 8th byte.The ninth byte, 0x03, indicates the end of the data. Package： 1x rfid reader module with 5pin cable（WG26/34）or1x rfid reader module with 3pin cable（UART ）