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This is a blank 13.56MHz RFID/NFC keychain fob. The fob contains a
small RFID 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 ISO/IEC 14443 Type A 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.

These use a ISO/IEC 14443 Type A chipset, which used to be the
'classic' NFC chipset. In ~2014, the NFC forum decided not to support
this chipset anymore, so newer phones do not support it. This only
matters if you're trying to use this tag with a phone/tablet.

RFID 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

Tag specification:

* 38.39mm / 1.51" x 38.39mm / 1.51" x 5.04mm / 0.2"
* 8.68g
* Works about 2" away from reader


Click 'show more' to display specifications.

General information

Manufacturer Adafruit
Product type Electronics supplies + housing
Item number5999637
Manufacturer no.ada-1482

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Returns and warranty

Warranty 24 month Bring-in
30-day right of return

30-day right of return

This product may be returned within 30 days after shipment or collection. A minimum of 10% will be deducted from opened products. Unfortunately, we cannot accept a product if it is damaged, incomplete or missing its original packaging.

Returns and warranty

Please use our simplified returns and warranty process to return a product or register a warranty case. Returns and warranty

Please use our simplified warranty process to view the warranty period as well as any warranty extensions you may have purchased. This will ensure that your return or warranty case is processed quickly and effectively.


Mail delivery

 Expected delivery time: approx. 6–8 days
Currently 3 piece(s) in stock at the supplier


All locations

 Expected delivery time: approx. 6–8 days
Currently 3 piece(s) in stock at the supplier

If ordered immediately.
Information subject to change.

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Adafruit 13.56MHz RFID/NFC Leather Keychain Fob 1KB Adafruit 13.56MHz RFID/NFC Leather Keychain Fob 1KB