MFRC-522 RFID Reader/Writer Module 13.56MHz with S50 Card & Keychain

📇 MFRC-522 RFID Reader/Writer Module – 13.56MHz 📇

The MFRC-522 is a cost-effective, high-performance RFID/NFC reader and writer module operating at 13.56MHz. It supports the ISO/IEC 14443A protocol (such as MIFARE S50 cards). This kit includes a PVC S50 card and a keychain fob for immediate testing. With support for SPI/UART/I²C interfaces, it is widely used in Arduino, Raspberry Pi, ESP32, and access control projects.

✅ Specifications:

• Main Chip: MFRC-522 (China Chip).
• Frequency: 13.56 MHz.
• Protocol: ISO/IEC 14443A (MIFARE 1K S50).
• Supported Interfaces: SPI (default), I²C, UART.
• Operating Voltage: 2.5V – 3.3V (logic at 3.3V).
• Reading Distance: Up to 2 – 5 cm (depends on antenna/card).
• Included Card: MIFARE S50 PVC (1K Byte memory).
• Included Keychain: MIFARE S50 (UID unique, 1K Byte memory).
• Low power consumption – suitable for portable devices.
• Module Dimensions: ~40 × 60 mm.
• Approximate Weight: 25 g (with card & keychain).

🔹 Key Features:

✔ Complete kit (module + card + keychain) for instant testing.

✔ Compatible with Arduino, Raspberry Pi, ESP32 (ready-to-use libraries available).

✔ Multiple interfaces (SPI/UART/I²C) for easy integration.

✔ Supports reading and writing data on MIFARE S50/UID cards.

✔ Perfect for access control and attendance systems.

✔ Cost-effective and reliable performance.

📌 Common Applications:

• Access control systems.
• Time & attendance management.
• Arduino/Raspberry Pi smart ID projects.
• Membership and loyalty programs.
• IoT projects requiring user identification.