📡 MFRC522 RFID Reader/Writer Module Kit — 13.56 MHz
The RC522 module is a compact 13.56 MHz RFID reader/writer built around the MFRC522 controller. It reads and writes MIFARE cards and tags over SPI, making it a simple way to add contactless ID to an Arduino or Raspberry Pi project.
✨ Key Features
- MFRC522 reader/writer IC for 13.56 MHz contactless cards
- SPI interface — only a few wires to your microcontroller
- On-board antenna with a read range of up to about 6 cm depending on the tag
- Comes with a MIFARE Classic key fob and card to start testing
• Header pins included for breadboard use
- Supports reading and writing blocks on MIFARE tags
🔬 Specifications
- Frequency: 13.56 MHz
- Controller: MFRC522
- Interface: SPI (SCK, MISO, MOSI, SS, RST)
- Supply voltage: 3.3V DC
- Read distance: up to ~6 cm
- Supported cards: MIFARE 1K/4K and other ISO14443A tags
- Board size: approx. 40 × 60 mm
🧰 Perfect for
• Access control and door locks
• Attendance and time-clock projects
• RFID inventory and asset tagging
- Arduino, ESP32 and Raspberry Pi experiments
• Smart home and vending prototypes
⚠️ The RC522 is a 3.3V device — use a level shifter or resistor divider on 5V Arduino logic lines.
