1. Gilt PCB and Small dimension and easy to embed into your project 2. Support .SPI and HSU (High Speed UART), Change between those modes 3. Support RFID reading and writingSupportP2P communication with peersSupport NFC with Android phone 4. Typical Operating Distance have been updated to 5cm-7cm reading distance 5. Work in NFC Mode or RFID reader/writer Mode RFID reader/writer supports: 1) 1k, 4k, Ultralight, and DesFire cards 2) ISO/IEC 14443-4 cards such as CD97BX, CD light, Desfire, P5CN072 (SMX) 3) Innovision Jewel cards such as IRT5001 card 4) FeliCa cards such as RCS_860 and RCS_854 Plug and play Built in PCB Antenna, with 4cm-6cm communication distance On-board level shifter, Standard 5V TTL for and UART, 3.3V TTL SPI Work as RFID reader/writer Work as 1443-A card or a virtual card Exchange data with other NFC devices such as smartphone Colour:red Material:ABS Package Contents: 2 x PN532 NFC RFID Wireless Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.