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![Sintron] RC522 RFID Reader / Writer Module kit with SPI for Arduino P – Sintron Technology](https://sintron-hk.com/cdn/shop/products/91nw_2B_2BPK_2BJL._SL1500_1024x1024@2x.jpg?v=1527381783 "Sintron] RC522 RFID Reader / Writer Module kit with SPI for Arduino P – Sintron Technology")
Sintron] RC522 RFID Reader / Writer Module kit with SPI for Arduino P – Sintron Technology
RC522 Not working - Programming Questions - Arduino Forum
