MFRC522 RFID Reader Module Kit — 13.56MHz with Key Card & Key Ring

MFRC522 RFID Reader Module Kit — 13.56MHz with Key Card & Key Ring

The MFRC522 RFID reader module kit is the most popular RFID solution for Arduino projects. Based on the NXP MFRC522 contactless card reader IC, it reads and writes 13.56MHz MIFARE RFID cards and tags via SPI. The kit includes the MFRC522 reader module, a MIFARE 1K key card, and a MIFARE 1K key ring tag — everything needed to build an RFID access control, attendance, or identification system with Arduino.

Kit Contents

• MFRC522 RFID reader module — 13.56MHz, SPI interface
• MIFARE 1K key card — 1KB EEPROM, 13.56MHz
• MIFARE 1K key ring tag — 1KB EEPROM, 13.56MHz

Key Specifications

• IC: NXP MFRC522 | Frequency: 13.56MHz
• Supported cards: MIFARE 1K, 4K, Ultralight, DESFire
• Interface: SPI (up to 10Mbps) | Supply: 3.3V
• Read range: up to 5cm | Card memory: 1KB EEPROM (16 sectors)
• Library: MFRC522 Arduino library
• Compliance: RoHS compliant

Why Choose This?

• ✅ Complete kit — reader + key card + key ring, ready to use immediately
• ✅ MFRC522 Arduino library — read/write RFID cards in minutes with example sketches
• ✅ 1KB EEPROM per card — store user ID, access level, and custom data
• ✅ SPI interface — fast, reliable communication with Arduino
• ✅ 3.3V operation — compatible with Arduino (via level shifter) and ESP32/Raspberry Pi

Typical Applications

• Arduino RFID door access control system
• Employee and student attendance tracking
• RFID-based inventory and asset tracking
• Contactless payment and loyalty card simulation
• RFID-triggered automation and smart home projects

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