Description: PN532 NFC / RFID Module with Smart Card Near Field for Arduino 5cm longest effective communication distance Connected with Raspberry Pi by SPI interface Available for 13.56 MHz contactless communication Specification: Material: FR-4 Epoxy Glass Fiberboard Size: Approx. 7.9 cm x 5 cm x 1.2 cm / 3.11 x 1.97 x 0.47 inch Chip: NXP PN532 Operation Voltage: 3.3V Power Supply Voltage: 3.3~5.5V Maximum Power Supply Current: 150mA Operation Current (Standby Mode): 100mA Operation Current (Write Mode): 120mA Operation Current (Read Mode): 120mA Pointer: PWR Interface: for Raspberry Pi 20 pins interface, standard SPI interface Package Includes: 1 Piece NFC Module 1 Piece White Board 1 Piece Key Ring Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement