{"title":"13.56MHz RFID/NFC Black Sewable Button - NTAG213 - 24mm Diameter","handle":"13-56mhz-rfid-nfc-black-sewable-button-ntag213-24mm-diameter","url":"/products/13-56mhz-rfid-nfc-black-sewable-button-ntag213-24mm-diameter","description":"This 13.56 MHz RFID/NFC sewable button uses an NTAG213 chip in a compact 24 mm laundry-tag form factor. It can be sewn into garments, attached to equipment, or embedded in projects for contactless identification, data sharing, or NFC interactions. The button is passively powered — it requires no battery and activates when held a few centimetres from a compatible reader.\n\nThe NTAG213 is a \"Type 2\" NFC tag that works with virtually any NFC-enabled smartphone (Android or iPhone) without proprietary licensing issues. It is also compatible with standard 13.56 MHz RFID/NFC readers that support ISO/IEC 14443 Type A.\n\nKey Features\n\n\nNTAG213 Chip – 144 bytes of writable EEPROM in 4-byte banks, 10,000+ write cycles\n\nPermanent 7-Byte UID – Factory-burned unique serial number for identification (cannot be changed)\n\nUniversal Smartphone Compatibility – Works with any NFC-enabled phone (no NXP/Mifare licence required)\n\nSewable Button Form Factor – 24 mm diameter, designed for textile and garment attachment\n\nPassive Operation – No battery required; powered by the reader's RF field\n\n\nSpecifications\n\n\nFrequency – 13.56 MHz\n\nChip – NTAG213\n\nStandard – ISO/IEC 14443 Type A\n\nMemory – 144 bytes writable EEPROM\n\nWrite Endurance – 10,000+ cycles\n\nUID – 7-byte permanent serial number\n\nDiameter – 24 mm\n\nColour – Black\n\n\nIdeal For\n\nWearable and e-textile NFC projects\nGarment and laundry identification\nContactless information sharing (URLs, vCards, Wi-Fi credentials)\nAccess control and attendance tracking\n\n\nPackage Contents\n\n1× RFID/NFC Sewable Button (NTAG213)\n\n\nResources\n\n\nAdafruit RFID/NFC Learning Guides – Tutorials and project ideas\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":4595,"title":"Default Title","sku":"AF-4429","price":4.15,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}