Features: brand new and high quality RFID-MOUDLE. MF522-AN module adopts MFRC522 original reader circuit chip design, easy to use, low cost, suitable for equipment development, development of advanced applications such reader users, the need for RF card terminal design and production of the user. This module can be loaded directly into a variety of readers molds. WIDELY USE. Supported card types: mifare-1 S-50, mifare-1 S70, mifare-UltraLight, mifare-Pro, mifare-Desfire,etc. HIGH QUALITY. Module uses voltage of 3.3V, through the SPI interface simple few lines can be directly connected to the user any CPU board communication module guarantees stable and reliable work, reader distance. PACKAGE CONTAINS. Each package comes with 1 x IC Card Sensor Module; 1 x S-50 White Card; 1 x for Key Ring; 1 x Vertical Row Pin ; 1 x Curved Row Pin. ADVANCED DESIGN. Applied to 13.56MHz contactless communication highly integrated chip card reader. Support 14443A compatible transponder signals. The digital part handles ISO14443A framing and error detection. MFRC522 supports MIFARE-Series higher speed non-contact communication, two-way data transfer rates up to 424kbit / s. Specifications: Material: Silicon Current :13-26mA / for DC 3.3V Idle Current :10-13mA / for DC 3.3V Sleep current: <80uA for Peak current: <30mA Operating Frequency: 13.56MHz Data Transfer Rate: Max. 10Mbit/s Relative Humidity: 5% -95% Environmental Operating temperature: -20-80 degrees Celsius Environment Storage temperature: -40-85 degrees Celsius Size: Approx. 40x60mm/1.57x2.36in Weight: Approx. 25g Package Includes: 1 Piece IC Card Sensor Module 1 Piece S-50 White Card 1 Piece Vertical Row Pin 1 Piece Curved Row Pin 1 Piece for Key Ring note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!