M5Stack | M5Stack Unit NFC ST25R3916 NFC Module 13.56MHz RFID Read Write Unit I2C Interface for IoT Access Control Systems

M5Stack Unit NFC ST25R3916 NFC ModuleProduct DescriptionThis NFC Unit is a high-performance near-field communication read/write module working at 13.56 MHz, built-in advanced ST25R3916 NFC front-end IC. It supports mainstream protocols including ISO 14443A, ISO 14443B, FeliCa™ and ISO 15693, ensuring stable and efficient read/write and data exchange with various NFC/RFID tags and cards.The module supports three working modes: reader/writer mode, card emulation mode and custom protocol mode, with automatic antenna tuning and high-sensitivity reception for strong compatibility and reliability.It adopts standard I2C interface for stable and fast data transmission with host devices. Designed with LEGO-compatible mounting holes, it supports screw-mount installation and flexible structural integration for different projects.Widely used in access control systems, identity authentication, smart transportation and other NFC & RFID application scenarios. Key Features- 13.56 MHz high frequency NFC read/write unit- Built-in high-performance ST25R3916 NFC front-end IC- Supports ISO14443A/B, FeliCa™, ISO15693 protocols- Supports Reader/Writer, Card Emulation, Custom Protocol modes- I2C communication interface for stable data transmission- LEGO-compatible mounting holes for easy installation- Compatible with development platforms: UiFlow2, Arduino IDEPackage List1 × NFC Unit1 × HY2.0-4P Grove Cable (20cm)ApplicationsAccess Control Systems, Identity Verification, Smart Transportation, NFC/RFID Identification ProjectsProduct details