{"product_id":"rfid-reader-module-rc522-13-56mhz-125khz-spi-s50-arduino","title":"RFID Reader Module Kit — RC522 13.56MHz + 125kHz, SPI, S50 Card, Arduino UNO\/Mega","description":"\u003ch2\u003eRFID Reader Module Kit - RC522 13.56MHz + S50 Card \u0026amp; Keychain, Arduino\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eMFRC522\u003c\/strong\u003e (RC522) is a highly integrated 13.56MHz RFID reader\/writer module using the \u003cstrong\u003eSPI interface\u003c\/strong\u003e for communication with Arduino, ESP32, and STM32. This kit includes the RC522 module, an \u003cstrong\u003eS50 Mifare 1K card\u003c\/strong\u003e, and a \u003cstrong\u003ekey fob\u003c\/strong\u003e for immediate use in access control, attendance systems, and RFID project development.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReader IC\u003c\/td\u003e\n\u003ctd\u003eMFRC522 (NXP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e13.56MHz (ISO\/IEC 14443 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eSPI (up to 10Mbps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Range\u003c\/td\u003e\n\u003ctd\u003eUp to 60mm (card dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Cards\u003c\/td\u003e\n\u003ctd\u003eMifare 1K (S50), Mifare 4K (S70), Mifare Ultralight, NTAG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCard Memory (S50)\u003c\/td\u003e\n\u003ctd\u003e1KB (16 sectors x 4 blocks x 16 bytes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20C to +80C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Size\u003c\/td\u003e\n\u003ctd\u003e~60 x 40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose RC522?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPI Interface\u003c\/strong\u003e - Fast 10Mbps SPI; reads card UID in under 50ms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V Operation\u003c\/strong\u003e - Compatible with 3.3V MCUs; use level shifter for 5V Arduino\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead + Write\u003c\/strong\u003e - Full read\/write access to Mifare card sectors with authentication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Includes Cards\u003c\/strong\u003e - S50 card and key fob included; start testing immediately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFRC522 Library\u003c\/strong\u003e - Full Arduino library with examples for UID reading and sector access\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDoor access control system (Arduino + relay + RC522)\u003c\/li\u003e\n\u003cli\u003eEmployee attendance and time tracking\u003c\/li\u003e\n\u003cli\u003eLibrary book checkout system\u003c\/li\u003e\n\u003cli\u003eContactless payment simulation\u003c\/li\u003e\n\u003cli\u003eRFID-based inventory management\u003c\/li\u003e\n\u003cli\u003eSmart locker and safe access control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eArduino Wiring\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRC522 Pin\u003c\/th\u003e\n\u003cth\u003eArduino Uno\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSDA (SS)\u003c\/td\u003e\n\u003ctd\u003ePin 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSCK\u003c\/td\u003e\n\u003ctd\u003ePin 13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOSI\u003c\/td\u003e\n\u003ctd\u003ePin 11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMISO\u003c\/td\u003e\n\u003ctd\u003ePin 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRST\u003c\/td\u003e\n\u003ctd\u003ePin 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can RC522 read 125kHz EM4100 cards?\u003c\/strong\u003e No - RC522 operates at 13.56MHz (ISO 14443A) only. For 125kHz EM4100\/HID cards, use an RDM6300 or EM-18 125kHz reader module.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I read the card UID with Arduino?\u003c\/strong\u003e Install MFRC522 library by miguelbalboa. Use the DumpInfo example to read UID and card memory. UID is typically 4 bytes (8 hex characters) for S50 cards.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1x RC522 RFID Reader\/Writer Module\u003c\/li\u003e\n\u003cli\u003e1x S50 Mifare 1K RFID Card\u003c\/li\u003e\n\u003cli\u003e1x RFID Key Fob\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"MINI RC522 Green","offer_id":46991505817835,"sku":"14:10#MINI RC522 Green","price":6.16,"currency_code":"USD","in_stock":true},{"title":"MINI RC522 Black","offer_id":46991505850603,"sku":"14:201659813#MINI RC522 Black","price":5.56,"currency_code":"USD","in_stock":true},{"title":"PN532 Module","offer_id":46991505883371,"sku":"14:94#PN532 Module","price":13.12,"currency_code":"USD","in_stock":true},{"title":"PN532","offer_id":46991505916139,"sku":"14:29#PN532","price":14.28,"currency_code":"USD","in_stock":true},{"title":"RDM6300","offer_id":46991505948907,"sku":"14:173#RDM6300","price":12.36,"currency_code":"USD","in_stock":true},{"title":"IC KEY","offer_id":46991505981675,"sku":"14:350852#IC KEY","price":3.56,"currency_code":"USD","in_stock":true},{"title":"IC Card","offer_id":46991506014443,"sku":"14:1202#IC Card","price":3.4,"currency_code":"USD","in_stock":true},{"title":"MFRC-522","offer_id":46991506047211,"sku":"14:4044226#MFRC-522","price":5.56,"currency_code":"USD","in_stock":true},{"title":"MFRC-522 Module","offer_id":46991506079979,"sku":"14:351074#MFRC-522 Module","price":4.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/nfc-rfid-reader-module-kit.webp?v=1761531159","url":"https:\/\/keszoox.com\/products\/rfid-reader-module-rc522-13-56mhz-125khz-spi-s50-arduino","provider":"Keszoox","version":"1.0","type":"link"}