AJAX

AJAX | Tag Encrypted DESFire Contactless Key Fob for KeyPad Plus, Pack of 100, Black | 42848

SKU AJ-42848

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Encrypted DESFire credentials for Ajax KeyPad Plus, supplied 100 to a pack. Each one carries Triple DES and 128-bit AES hardware encryption, so it cannot be cloned by holding a reader near someone's pocket the way a 125 kHz proximity card can.

Built for the installer

Each credential is assigned to a named user in the Ajax app, with its own access permissions, so the event log records who armed or disarmed rather than that a card was used. Losing one means disabling that credential, not reissuing the site.

One credential can be paired with up to 13 hubs simultaneously, which is genuinely useful for a key holder or an engineer covering multiple properties on one card.

Pass cards and Tag fobs are functionally identical and differ only in form factor, so choose on what the user will actually carry.

Key features

  • Triple DES and 128-bit AES hardware encryption, not a clonable proximity credential
  • Assigned to a named user with individual permissions and a proper audit trail
  • Pairs with up to 13 hubs so one credential covers multiple sites
  • Supplied 100 per pack
  • No battery or maintenance, entirely passive

System requirements

Requires Ajax KeyPad Plus to read the credential, and an Ajax hub. Operates on ISO 14443-A at 13.56 MHz.

Specifications

SKUAJ-42848
BrandAJAX
Credential typeDESFire contactless key fob
Operating standardISO 14443-A, 13.56 MHz
EncryptionTriple DES and AES hardware encryption with a 128-bit key
Hub pairingOne credential can pair with up to 13 hubs
User assignmentName and access permissions set per credential in the Ajax app
Power supplyNot required, passive credential
Pack quantity100 per pack
Dimensions1.77 x 1.26 x 0.24 in
Device weight0.25 oz
Operating temp14F to 104F
Reader requiredAjax KeyPad Plus
ColourBlack
Region9NA, North America model
Warranty24 months

Documents and resources

FAQs

What is the difference between Pass and Tag?
Function and encryption are identical. Pass is a card and Tag is a key fob, so the choice comes down to what the user will actually carry day to day.
Can these credentials be cloned?
They use DESFire with Triple DES and 128-bit AES hardware encryption, which is substantially harder to clone than a 125 kHz proximity card that can be read from a pocket.
Can one credential work at several sites?
Yes. A single Pass or Tag can be paired with up to 13 Ajax hubs simultaneously, which suits key holders and engineers covering multiple properties.
What reader is required?
Ajax KeyPad Plus. The standard KeyPad accepts codes only and does not read cards or fobs.