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- Manufacturer: Adafruit
- Order number: EXP-R15-579
- Manufacturer part number: 921
- Availability: 1
- country of origin: CN
- HS code: 85235200
- Weight (kg): 0.01
This is a blank MiFare Classic silicone bracelet - often used for parties/events or... more
This is a blank MiFare Classic silicone bracelet - often used for parties/events or identification but also found in other systems where a small proximity card is desired. The bracelet contains a NXP S50 chip and an antenna, and is passively powered by the reader/writer when placed a couple inches away
These can be read by almost any 13.56MHz RFID/NFC reader but make sure it can handle MiFare cards as there are a few other encoding standards (like FeLica) They are tested and work great with both our PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino!
These chips can be written to & store up to 1 KB of data in writable EEPROM divided into banks, and can handle over 100,000 re-writes. You can use our PN532 NFC/RFID breakout board or Adafruit NFC/RFID Shield for Arduino to read and write data to the EEPROM inside the tag. There is also a permanent 4-byte ID burned into the chip that you can use to identify one tag from another - the ID number cannot be changed.
- Technical Details:
- S50 chip specification:
- 1 KiloByte (8 KiloBit) non-volatile EEPROM storage
- Built in encryption engine with 48-bit key
- 4 Byte unique identifier burned into the chip
- 13.56 MHz frequency
- Bracelet specification:
- Fits wrists/ankles/hands up to 70mm (2.75") diameter 25.4mm diameter
- Bracelet made of rugged waterproof silicone
- 0.9 grams / 0.03 oz
- Works about 1" away from reader
- Weight: 14.86g
- NXP S50 datasheet