Model: NFC / RFID Shield - Quantity: 1 - Color: White - Material: Glass fiber FR4 - NFC technology is regulated by Near Field Communication Forum which standardizes NFC communication between devices: how they pair share data and allow a secure transaction to happen - NFC Forum develops and certifies device compliance with NFC standards - NFC operate on ISM band of 13.56MHz frequency - NFC communication range is up to 10cm. But this is limited by the antenna and power radiation design - Most devices work within a range of 10mm - NFC Shield antenna is designed to work within a range of 2cm - NFC Shield provides all necessary circuitry for PN532 like 27.12Mhz crystal power supply - It also beaks-out the I/O pins of PN532 for easy access - The communication between Arduino and NFC Shield is via SPI - Arduino Shield compatible - No soldering required - PI interface. Hence most Arduino pins are available for other applications. - Built in PCB Antenna. - Supports both 3.3V and 5V operation using TI's TXB0104 level translator. - Socket to connect other shields. - Packing list: - 1 x Communication module - 2 x 6pin headers - 2 x 8pin headers - 1 x Philips mifare card http://m5.img.dxcdn.com/CDDriver/CD/sku.179238.zip