HID 921-PMNN MultiCLASS Mobile-Ready Keypad Reader

HID 921-PMNN MultiCLASS Mobile-Ready Keypad Card Reader

The HID 921-PMNN is a wall-mounted, multi-technology keypad proximity card reader designed for modern access control environments. This mobile-ready device combines dual-frequency RFID credential support with intuitive PIN entry, delivering flexible authentication options for enterprise and institutional deployments. Built on open standards and engineered for energy efficiency, the 921-PMNN simplifies integration into existing security infrastructure while reducing operational costs.

Key Features

• Dual-Frequency Technology: Reads 13.56 MHz (high frequency) and 125 kHz (low frequency) credentials simultaneously, supporting iCLASS SE, iCLASS, MIFARE, and compatible card formats
• Mobile Access Ready: Configurable for HID Mobile Access®, enabling smartphone-based entry via Bluetooth and NFC protocols
• Integrated Keypad: Backlit tactile keypad for secure PIN entry and dual-factor authentication workflows
• Open Protocol: Communicates via Open Supervised Device Protocol (OSDP) for vendor-neutral system compatibility
• Power over Ethernet (PoE): Simplified wiring and installation with single-cable connectivity
• Intelligent Power Management: Reduces power consumption by up to 59% compared to conventional readers, lowering facility operating expenses
• Environmental Certifications: Holds Environmental Product Declaration and Green Circle certifications, supporting sustainability initiatives
• Professional Design: Black finish wall-switch form factor integrates seamlessly with contemporary building aesthetics

Technical Specifications

• Product Type: Wall Switch Keypad Proximity Card Reader
• Supported Credentials: Cards, fobs, and mobile devices (multi-technology)
• Communication: OSDP (wired), Bluetooth/NFC (mobile)
• Frequency Support: 125 kHz and 13.56 MHz dual-frequency
• Power: PoE (Power over Ethernet)
• Color: Black
• Connectivity: Wired

Ideal Applications

• Corporate offices and commercial buildings requiring modern access control
• Healthcare and educational facilities with multi-credential user bases
• Organizations transitioning to mobile-first access strategies
• Facilities with existing HID ecosystems seeking compatible upgrades
• Green-certified buildings and LEED-accredited projects

Jerry Tildsen

The 921-PMNN addresses a critical market need: consolidating legacy RFID infrastructure with emerging mobile access demands. Its dual-frequency architecture eliminates the need for separate readers, reducing hardware costs and installation complexity. The OSDP protocol ensures long-term vendor independence—critical for organizations protecting IT investments.

Energy efficiency gains of up to 59% translate directly to reduced HVAC and power infrastructure loads, particularly valuable in large-scale deployments. The integration of PIN entry alongside credential reading enables layered authentication without requiring separate keypads, streamlining both user experience and maintenance. Certifications signal environmental stewardship, increasingly important for government and corporate procurement.

For integrators, the PoE-only architecture simplifies infrastructure planning and troubleshooting compared to hybrid power solutions.