M5Stack RFID 2 Read/Write Unit WS1850S 13.56MHz

M5Stack

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SKU:
558-U031-B
MPN:
U031-B
M5Stack U031-B Unit RFID2 is a 13.56 MHz RFID read/write module based on the WS1850S, supporting ISO/IEC 14443 Type A/B, compatible MIFARE and NTAG cards, I2C communication at address 0x28, and a read/write distance of less than 20 mm. View full description
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Technical Specifications

Brand:
M5Stack
Read/Write IC:
WS1850S
Operating Freq:
13.56MHz
Communication Interface:
I2C @0x28
Supported Prot:
ISO/IEC 14443 Type A/Type B
Product Size:
48.0x24.0x8.0mm
Product Weight:
5.9g
Package Size:
138.0x93.0x16.0mm
Gross Weight:
11.3g

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources:
Documents

13.56 MHz RFID Read/Write Unit with WS1850S, I2C, and ISO/IEC 14443 Type A/B Support

The M5Stack U031-B Unit RFID2 is a compact 13.56 MHz RFID read/write module designed for identification, authentication, access control, and data-recording applications. It integrates the WS1850S RFID controller and supports ISO/IEC 14443 Type A and Type B standards, allowing compatible RFID cards and tags, including MIFARE and NTAG series devices, to be detected and accessed.

The module communicates with M5Stack controllers through an I2C interface at address 0x28 and provides a read/write distance of less than 20 mm under suitable operating conditions. A HY2.0-4P Grove connector simplifies host integration, while two LEGO-compatible mounting holes allow the module to be installed in prototypes, enclosures, and structural assemblies. Support for UiFlow1, UiFlow2, and Arduino IDE makes it suitable for both rapid prototyping and embedded RFID applications.

Key Features

  • RFID Controller: Integrated WS1850S read/write IC
  • Operating Frequency: 13.56 MHz RFID communication
  • Supported Standards: ISO/IEC 14443 Type A and Type B
  • Card Compatibility: Supports compatible MIFARE and NTAG series RFID cards and tags
  • Read/Write Operation: Supports RFID data reading and writing
  • Communication Interface: I2C host communication
  • I2C Address: Default address 0x28
  • Read/Write Distance: Less than 20 mm
  • Grove Connectivity: HY2.0-4P interface for straightforward M5Stack integration
  • Mounting: 2 × LEGO-compatible mounting holes
  • Development Support: UiFlow1, UiFlow2, and Arduino IDE
  • Compact Design: 48.0x24.0x8.0 mm form factor

Applications

  • Smart home access control
  • RFID identity authentication
  • User identification systems
  • Vehicle management
  • Intelligent transportation systems
  • Smart bookshelf systems
  • RFID-based data logging
  • Attendance systems
  • Equipment authorization
  • Embedded access terminals
  • IoT identification systems
  • Educational RFID projects

Model Size

Package Includes:

  • 1 x Unit RFID2
  • 1 x HY2.0-4P Grove Cable (20cm)