How the compatible Onity Ultralight C (security-upgraded) works
The Onity Ultralight C (security-upgraded) is a 13.56 MHz high-frequency contactless credential read over the ISO/IEC 14443 air interface. Its data structure is Onity encoding on Ultralight C; 3DES (security-upgraded units). When you present a credential, the reader decodes that exact structure and passes it to your access-control panel as a card number it recognises.
Because the Onity Ultralight C (security-upgraded) is a secured smart credential, it is designed so the encryption keys stay under your control. We supply compatible blank credentials built on the matching Genuine NXP MIFARE Ultralight C platform, ready for your access-control system or integrator to enrol exactly as it would credentials ordered through the original vendor's channel. You get drop-in spares and bulk stock at a fraction of OEM pricing — and because your own system writes the keys, every credential inherits your site's security.
To order, tell us the part number or format printed on your existing Onity card, and our specialists confirm the encoding before anything ships. Bulk and reorder quantities are welcome — pricing is a fraction of OEM list, and every credential is verified to read on your existing equipment.
Also known as
Onity ULC · Onity Ultralight C
Onity and all other brand and product names are trademarks of their respective owners. Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, sponsored by, or endorsed by these companies. Brand and format names are used only to identify the systems our products are compatible with. MIFARE and DESFire are registered trademarks of NXP B.V.