We also have a selection of Basic Starter Kit , Deluxe Starter Kit , Ultimate Starter Kit that utilize this module. DESCRIPTION RC522 Chip: The MF RC522 is a highly integrated read and write 13.56MHz contactless communication card chip developed by NXP. It is designed for low-voltage, low-cost applications and is ideal for smart meters and portable handheld devices. The MF RC522 supports various 13.56MHz passive contactless communication methods and protocols, including ISO14443A. It can handle data at a transmission rate of up to 424kbit/s and supports the CRYPTO1 encryption algorithm for secure communication. RFID Module: The MF522-AN module is based on the original Philips MFRC522 chip and is designed for easy use and low cost. It connects to user equipment development for advanced applications. This module operates at 3.3V and communicates via SPI, ensuring stable and reliable performance. SPECIFICATION Working current: 13-26mA/DC 3.3V Idle current: 10-13mA/DC 3.3V Sleep current: