Technical Specifications
- Module Model: RC522 (HW-126)
- Frequency: 13.56 MHz
- Protocol Support: ISO 14443A (MIFARE, etc.)
- Reading Distance: Up to 5-8 cm (depending on tag)
- Interface: SPI (SCK, MOSI, MISO, SDA, RST)
- Operating Voltage: 3.3V DC (5V tolerant on some pins)
- Current Consumption: Low power (standby ~few mA)
- Dimensions: Compact blue PCB with clear antenna coil





















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