Feature: 1. 1. Longest effective communication distance of 3cm. 2. 2. Supports switching of SPI, IIC and UART interface. 3. 3. Can be used for 13.56M non‑contact communication. 4. 4. Compatible with ISO14443 Type A and Type B standards. 5. 5. The module is equipped with onboard antenna, thus no external antenna coil is needed. Specification: Description: PN532 NFC module, as its name implies, is based on PN532 chip and used for 13.56MHz near field communication. The module is equipped with onboard antenna, thus no external antenna coil is needed. It is compatible with SPI, IIC and UART interface for communication. With NFC library offered by us, it is quite convenient for development of products with NFC functions. Specifications: IC: PN532 Operating Voltage: 3.3V Power Supply Voltage: 3.3-5.5V Max Supply Current: 150mA Working Current (Standby Mode): 100mA Working Current (Write Mode): 120mA Working Current (Read Mode): 120mA Indicator: PWR Interface: SPI Interface, Std 20pins Interface Size: 8.5*5.6*0.1cm . Package List: 1 x PN532 Module