PN532 NFC RFID Module

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Features  Support I2C, SPI and HSU (High Speed UART), easy to change between those modes  On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI  Support RFID reading and writingNFC with Android phone  Power supply:3.3V/5V ; PCB Demension:46mmx47mm (1.81inch x 1.85inch)  Equided with two 3mm 安装孔,Small dimension and easy to embed into your project