Compared with PN532 NFC RFID module V4, this purple version has a different PN532 IC version which is cheaper. If you plan to use it for your product, we strong recommend to use PN532 NFC RFID module V4 instead of this purple version.
Comparing to read distance on PVC Mifare one S50 tag:
PN532 Purple Version: 6cm
PN532 Red Version: 7cm
PN532 Purple Version consumes 50uA more current than PN532 Red Version
Features
Small dimension and easy to embed into your project
Support I2C, SPI and HSU (High Speed UART), easy to change between those modes
Support RFID reading and writing, P2P communication with peers, NFC with Android phone
RFID reader/writer supports:Mifare 1k, 4k, Ultralight, and DesFire cards
ISO/IEC 14443-4 cards such as CD97BX, CD light, Desfire, P5CN072 (SMX)
Innovision Jewel cards such as IRT5001 card
FeliCa cards such as RCS_860 and RCS_854
Up to 6cm~7cm reading distance on Mifare tags, 2~4cm on square SRT512(IOS14443B) tag
On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI