SDC 00518A Precision 2100 Switch Kit
Overview
The SDC 00518A is a controller component designed to integrate proximity readers and keypads into OSDP-based access control systems. This switch kit manages NFC 13.56MHz credential authentication at door entry points, making it suited for facilities that need both contactless card readers and PIN entry in the same deployment. The dual-reader architecture supports mixed-credential environments — a critical requirement when retrofitting older PIN-only systems or building out new multi-credential campuses and corporate facilities.
Compatibility
The 00518A operates over OSDP (Open Supervised Device Protocol), ensuring compatibility with certified access control systems and security platforms that implement the standard. It accommodates both proximity reader and keypad reader inputs, permitting integration into installations where legacy PIN pads must coexist with modern contactless credentials. This flexibility applies to educational, corporate, and institutional security deployments. Confirm your VMS or access control panel supports OSDP before specifying this kit — not all legacy systems do.
Installation Notes
Install the 00518A in an access control cabinet or door controller enclosure with adequate ventilation. Ensure OSDP communication wiring runs separately from high-voltage power circuits to avoid signal degradation. Verify that your access control system firmware supports NFC 13.56MHz credential enrollment before field deployment. Test dual-reader operation (proximity + keypad) in a non-production door before rolling out across multiple entry points.
