MF RC522 is a read and write 13.56MHz contactless communication card chip used for high integration. Its low voltage, low cost and small size make it a good choice for developing smart meters and portable handheld devices. https://elecena.pl/product/6057465/rfid-reader-with-cards-kit-13-56mhz 2016-05-07 https://elecena.pl/product/6057465/rfid-reader-with-cards-kit-13-56mhz 2025-12-18