What it does and why it matters Provides flexible, proven access control options so you can match authentication to each door or user: single-card, card-or-PIN (either factor grants access), card-and-PIN (two-factor), and group access using multiple cards or PINs. This flexibility reduces administrative work and lets you apply stronger controls only where needed. Key functions and compatibility Supports Wiegand readers with 26–37 bit input, ensuring compatibility with a wide range of standard access control systems. Works with keyboard-style readers using 4-bit, 8-bit (ASCII) or 10-bit virtual formats, enabling integration with keypad or terminal-based devices. Includes master card functionality for centralized administration, enrollment, or emergency override without changing hardware. Practical benefits Minimize hardware changes: integrates with existing Wiegand and keyboard readers so you can upgrade authentication methods without replacing infrastructure. Simplify administration: master card support and multiple access-mode options make user setup, temporary access, and privilege changes straightforward. Tailor security by location: apply simple card access in low-risk areas and card+PIN where higher assurance is required. Typical applications Office buildings and multi-tenant facilities: assign card access to staff and contractors, use card-or-PIN for front-desk or shared spaces, and enable card+PIN for secure zones. Warehouses and industrial sites: connect to Wiegand readers already in place and use master card control for supervisors and emergency access. Shared amenities and education campuses: support group access with multiple cards/PINs for teams, labs, or temporary event access without reconfiguring readers. Why choose this solution Broad protocol support (Wiegand 26–37 bit; keyboard 4/8/10 bit) and master card capability let you expand or tighten access control while maintaining existing hardware investments. Multiple access modes let you balance user convenience and security on a per-door basis. Specifications (as provided) Access modes: card; card or PIN; card with PIN; multiple cards/PINs Wiegand compatibility: 26–37 bit input Keyboard reader compatibility: 4 bit, 8 bit (ASCII), 10 bit virtual Feature: master card support For installation or integration questions, confirm your existing reader’s Wiegand bit format or keyboard protocol to ensure seamless connection.