Description
The PAC Ops DESFire 4 kB EV1 proximity card is made for demanding access-control environments where counterfeit resistance matters as much as reliability.
Its proprietary Ops security layer hardens the chip against unauthorised interference without compromising swift contactless performance, giving organisations a practical yet robust upgrade path.
Inside, each card carries a genuine NXP MIFARE DESFire EV1 chip with 4 kB of memory and an immutable unique serial number, making attempts at cloning exceptionally difficult. Supplied in convenient packs of ten, the cards use the standard CR80 format (86 mm × 54 mm) and slip straight into existing printers, holders and reader infrastructure.
Full conformity with ISO/IEC 14443-A parts 1-4 guarantees seamless interoperability across modern reader platforms.
For sites already built around PAC part 21106, this model serves as a direct drop-in replacement, adding stronger defences against current and emerging threats without forcing hardware changes.
Manufacturer part number: PAC-CD-CR-OPSC
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