Adafruit
13.56MHz RFID/NFC Black Sewable Button - NTAG213 - 24mm Diameter
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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, ...
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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.
The 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.
Key Features
- NTAG213 Chip – 144 bytes of writable EEPROM in 4-byte banks, 10,000+ write cycles
- Permanent 7-Byte UID – Factory-burned unique serial number for identification (cannot be changed)
- Universal Smartphone Compatibility – Works with any NFC-enabled phone (no NXP/Mifare licence required)
- Sewable Button Form Factor – 24 mm diameter, designed for textile and garment attachment
- Passive Operation – No battery required; powered by the reader's RF field
Specifications
- Frequency – 13.56 MHz
- Chip – NTAG213
- Standard – ISO/IEC 14443 Type A
- Memory – 144 bytes writable EEPROM
- Write Endurance – 10,000+ cycles
- UID – 7-byte permanent serial number
- Diameter – 24 mm
- Colour – Black
Ideal For
- Wearable and e-textile NFC projects
- Garment and laundry identification
- Contactless information sharing (URLs, vCards, Wi-Fi credentials)
- Access control and attendance tracking
Package Contents
- 1× RFID/NFC Sewable Button (NTAG213)
Resources
- Adafruit RFID/NFC Learning Guides – Tutorials and project ideas
Jargon buster
Plain-language definitions for the technical terms used above.
- EEPROM
- A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
- RF
- RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
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Sensors & Input
Wearables & E-textiles
Resources & Downloads
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