Support NFC reading and writing, P2P communication with peers. Support I2C, SPI and HSU (High Speed UART), easy to change among these modes. level shifter, standard 5V TTL for I2C and UART, 3.3V TTL SPI. Raspberry Pi compatible, Small Size and easy to embed into your project. reader/writer : 1k, 4k, Ultralight, and cards, ISO/IEC 14443-4 cards such as CD97BX, CD light, , P5CN072 (SMX), Innovision Jewel cards such as IRT5001 card, FeliCa cards such as RCS_860 and RCS_854. Specification: Material: Plastic Size Chart: Size: Approx. 70x50mm / 2.75x1.96inch Package Includes: 1 Piece NXP PN532 NFC Module V3 Kit : Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.