This NFC RFID Wireless Module Kit features a compact design with a gold-plated PCB for easy integration into your projects. It supports multiple interfaces: I2C, SPI, and HSU (High-Speed UART), with simple mode switching. Functions as an RFID reader/writer and supports NFC peer-to-peer (P2P) communication with compatible Android phones. Offers a typical reading distance of 5cm to 7cm. Operates in NFC mode or RFID reader/writer mode. Product Details: - RFID Reader/Writer Compatibility: Supports 1K, 4K, Ultralight, and DesFire cards; ISO/IEC 14443-4 cards (e.g., CD97BX, CD light, Desfire, P5CN072); Innovision Jewel cards (e.g., IRT5001); and FeliCa cards (e.g., RCS_860, RCS_854). - Plug and Play: Ready to use with various systems. - Built-in Antenna: Integrated PCB antenna with a communication range of 4cm to 6cm. - On-Board Level Shifter: Provides 5V TTL for I2C and UART, and 3.3V TTL for SPI. - Versatile Operation: Works as an RFID reader/writer, emulates a 1443-A card, or functions as a virtual card. - Data Exchange: Enables data transfer with other NFC devices like smartphones. - Color: As shown in the images. - Material: Plastic. Package Includes: 1 x Wireless Module Kit Note: Slight color variations may occur due to lighting and monitor differences. Please allow a measurement tolerance of +/- 1-3cm.