Dual Frequency RFID Reader Module with Wiegand Communication

Reader modules are electronic devices that detect the presence of tags in the environment and retrieve the information stored in them. This RFID reader module is very suitable for low-cost projects such as office security, home security, people identification, access control, interactive tools, and production control systems, etc. This module sends data through the UART protocol and makes data transfer through this interface relatively easy.

The ability to write through the Wiegand protocol and having a buzzer are among the positive features of the dual-frequency 13.56MHz and 125KHz RFID reader module model WG26.

RFID readers are usually divided into four categories:

1- 125KHz or LF low frequency, including RO and RW cards

2- 13.56MHz or HF high frequency, including cards: Mifare card, Desfire, NFC cards, etc.

3- UHF frequency band (long-range passive), including EPC GEN2 cards and tags

4- Long-range active, including tags and cards that have a battery

Connection Introduction:

1>.Power: DC 5V power supply, choose linearity power can gain better effects

2>.D1 D0: Wiegand data output DATA1, DATA0

3>.FOR: format selection (hanging means W26, ground connection means W34)

Wiegand Interface Output Introduction:

1>. When its sensors the card, the serial number will be output via Data 0, Data 1 two data wire

2>. Data 0 and Data 1 are high level when there is no data output

3>. Data Bit 0: it will generate 400us low level on Data 0 wire

4>. Data Bit 1: it will generate 400us low level on Data 1 wire

5>. Every data length is 2400us

6>. Every Mifare card has a serial number with 4 bytes, users should output the last three bytes

7>. Add the first 12-bit even check bit in the front and add the last 12-bit odd check bit in the back, 26-bit data in total

8>. Card number is 6B 3D 12 D6

9>. Output data is 3D 12 D6

Read write rfid module Specification:

1. - Operating voltage: 7.5 to 12 volts
2. - Current consumption: 40 milliamps
3. - Support for 125KHz and 13.56MHz frequencies
4. - Interface: Wiegand
5. - Dimensions: 47*26*5mm including the antenna
6. - Operating temperature: -20 to 70 degrees
7. - EM4100 card reading distance: more than 8 centimeters
8. - Mifare S50 S70, Desfire, FM1208 card reading distance: more than 5 centimeters