HID 551PPGGANA 551 Seos Essential Proximity Composite Card, SIO Programmed

Streamline legacy access control upgrades with the HID Global 551 Seos Essential Proximity Card — a practical, security-first credential designed for easy migration from 125 kHz systems. This SIO-enabled Proximity Card leverages Secure Identity Object technology to deliver multi-layered protection, including mutual authentication and secure messaging, helping safeguard identity data across your security and surveillance ecosystem. With 125 kHz operating frequency compatibility and support for HID Signo, iCLASS SE, multiCLASS SE, HID Prox and Indala readers, the card allows organizations to retain existing hardware while moving to stronger credential management. The composite PVC/PET construction is printable and ideal for badge personalization, and packaged quantities (25 cards) simplify procurement for mid- to large-scale deployments. Use Seos Essential to reduce migration costs, enhance data integrity with modern cryptographic techniques, and maintain privacy with randomized unique identifiers. Ideal for access control, monitoring and physical security upgrades — contact sales or order a pack of 25 to begin your migration to a more secure credential solution.

• Enables cost-effective migration from legacy 125 kHz systems while preserving existing reader investments
• Protects identity data with SIO-enabled mutual authentication and secure messaging for stronger security
• Broad compatibility with HID Signo, iCLASS SE, multiCLASS SE, HID Prox and Indala readers for seamless integration
• Economical, printable composite card (pack of 25) suited for bulk deployments and access control rollouts
• Random unique identifier improves privacy and reduces the risk of unauthorized tracking