13.56MHz NFC/RFID Reader Module for Arduino & UIFlow

The Unit RFID2 is a high-performance Radio Frequency Identification (RFID) unit designed for seamless non-contact data interaction. Powered by the integrated WS1850S chip, it operates at 13.56MHz and utilizes magnetic field induction technology to achieve bidirectional information exchange. It supports comprehensive card management functions, including reading, writing, identification, recording, encoding, and authorization of RF cards.

With robust support for ISO/IEC 14443 Type A/B, MIFARE, and NTAG protocols, the Unit RFID2 is highly versatile. It features an I2C interface (address: 0x28) with fast (400 Kbit/s) and high-speed (3400 Kbit/s) modes, making it easy to integrate with popular development platforms like Arduino and UIFlow (Blockly, Python). Additionally, it includes 2 LEGO-compatible holes for flexible prototyping. Ideal for Access Control, attendance systems, warehouse inventory, and vehicle management, it offers a reliable reading/writing distance of up to 20mm and data retention of over 10 years.

Features & Functions

  • Core Chip: Built-in WS1850S RFID Reader/writer IC.

  • Operating Frequency: 13.56 MHz.

  • Communication: I2C interface (Default Address: 0x28); Fast mode up to 400 Kbit/s; High-speed mode up to 3400 Kbit/s.

  • Protocol Support: ISO/IEC 14443 Type A & B, MIFARE, and NTAG.

  • Buffer: 64-byte transceiver buffer.

  • Reading/Writing Distance: < 20mm (non-contact).

  • Data Retention: > 10 years.

  • Operating Temperature: -20°C to 85°C.

  • Development Platforms: Fully compatible with Arduino and UIFlow (Blockly, Python).

  • Mechanical: Features 2 LEGO-compatible holes for easy assembly.

  • Key Functions: Card reading/writing, identification, recording, RF card encoding, and authorization.

  • Applications: Smart home access control, vehicle management, smart transportation, smart bookshelves, attendance tracking, and warehouse logistics.

Technical Specifications

Specification

Parameter

Reader IC

WS1850S

Operating Frequency

13.56 MHz

Communication Protocol

I2C (0x28)

Supported Standards

ISO/IEC 14443 Type A / Type B, MIFARE, NTAG

I2C Data Rate

Fast mode: 400 Kbit/s; High-speed: 3400 Kbit/s

Transceiver Buffer

64 bytes

Reading/Writing Distance

< 20 mm

Operating Temperature

-20°C ~ 85°C

Data Retention

> 10 years

Product Dimensions

48.0 x 24.0 x 8.0 mm

Product Weight

6.0 g

Package Dimensions

138.0 x 93.0 x 9.0 mm

Gross Weight

11.3 g

Package List

  • 1 x Unit RFID2

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

Unit RFID2 (WS1850S) - 13.56MHz NFC/RFID Reader Module for Arduino & UIFlow

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