RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020

RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag

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  • Product SKU: KG062
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The RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag is a popular module used for reading and writing data to RFID (Radio-Frequency Identification) cards and tags.

Here's a detailed overview of this module:

Purpose: The RFID RC522 module is designed to communicate with RFID cards and tags, allowing you to read and write data wirelessly using radio frequencies.

Functionality: It can read the unique ID of RFID cards, and depending on the card's capabilities, it can also read and write additional data.

Communication: The module communicates with microcontrollers using the Serial Peripheral Interface (SPI) protocol.


RFID Compatibility: The RC522 module is designed to work with RFID cards and tags based on the 13.56 MHz frequency.

Read and Write: It can both read and write data to compatible RFID cards and tags.

SPI Interface: The module communicates with microcontrollers using the SPI protocol, making it compatible with a wide range of microcontroller platforms.

Included Card and Tag: Often, the RC522 module is bundled with an RFID card and tag, allowing you to start experimenting right away.


Access Control: Used for secure entry systems by reading authorized RFID cards or tags.

Inventory Management: Employed to track items by tagging them with RFID and reading their information.

Automation: Integrated into projects where objects or devices need to be identified and controlled wirelessly.

Identification: Used in various identification systems for individuals, products, or assets.

Using the MQ-7: Using the RFID RC522 Module:

Wiring: Connect the module's pins to the appropriate pins on your microcontroller, including the SPI pins (SCK, MOSI, MISO, SS/CS). Powering the Module: Provide the module with the required power supply (often 3.3V or 5V).

Programming: Utilize libraries or code examples for your microcontroller platform to read and write data to RFID cards and tags.


Frequency Compatibility: Ensure that the RFID cards or tags you use are compatible with the 13.56 MHz frequency used by the RC522 module.

Data Security: Depending on your application, you might need to implement encryption or security measures to protect the data on the RFID cards. When integrating the RFID Reader/Writer RC522 SPI S50 module into a project, understanding the module's communication protocol, frequency compatibility, and potential security considerations is important for achieving successful and secure RFID communication.

Technical Details

  • Input Supply voltage (V): 3.3V (Do not use 5V supply)
  • Operating Current (mA): 13 ~ 26
  • Operating Frequency (MHz): 13.56
  • SPI data rate (Mbit/s) : 10
  • Operating distance in reading/Write mode (mm): 50

Physical Attributes

  • Length * Width * Height (mm): 60 x 39 x 5
  • Weight (gm): 19

Integration with Arduino

MFRC-522 RFID card reader sensor module

Sample Code


  • Automatic billing systems
  • Attendance systems
  • Verification/Identification system
  • Access control systems

Additional Details

  • Highly integrated analog circuitry to demodulate and decode responses.
  • Supports ISO/IEC 14443 A/MIFARE.
  • Typical operating distance in reading/Write mode is up to 50 mm.
  • Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd.
  • SPI up to 10 Mbit/s.
  • FIFO buffer handles 64 bytes of send and receive.
  • Flexible interrupt modes.
  • Power-down by software mode.
  • Programmable Timer.
  • 2.5 V to 3.3 V power supply.
  • CRC coprocessor.
  • Internal self-test.

Product Video

Package Includes

  • 1 x RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag

Customer Reviews

Based on 18 reviews
rajesh kumar
Works great. I found the range is little low but ...

Works great. I found the range is little low but will try few more things. Make sure you solder the pins before using it.

Worth For Money

Worth For Money

naziya siddiqui
Value for the money

Nice product

layba noor
Four Stars

Good product ,works well

Good product,

Good product, working fine, value for money

parveen aggarwal
Awesome for Arduino

Working as intended.....Very nice product

Five Stars

Works as expected

keshar ansari

Works perfectly and in accordance to specifications, great!

Not presoldiered

The product works fine, but the attachment pins are not presoldiered

Excellent Product..........

Good product. Totally working.