Features: This Near Field Communication card reader module is suitable for easy operation. With its simple interfaces and clear instructions, it allows for access to Near Field Communication functionality. Enjoy connection option with this Near Field Communication reader writer module's support for various interfaces selections. Providing flexibility and convenience in your Near Field Communication projects. Specifically for 13.56MHz near field communication, this Near Field Communication reader writer shield enables secure and convenient data exchange etween devices. Unlocks the potential of Near Field Communication technology for applications. With the PN532 chip, this near field communication reader ensures reliable and efficient 13.56MHz Near Field Communication communication. It features antennas, eliminating the need for external antennas coils. The module is suitable for SPI, I2C, and UART interfaces for communication. With Near Field Communication library support for RPi, this contactless communication module facilitates the development of Near Field Communication products. Utilize the capabilities for RPi platforms to easily integrate Near Field Communication functionality into your projects. Specifications: Component:PCB Type:Card Reader Module/Card Reader Module+Card Size:Approx.48.6x78.6mm/1.91x3.09inch Package Includes: 1 Set Card Reader Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.