A practical guide to UL 294 — the standard for access control system units — covering listing requirements, performance levels, line security, and what UL 294 listing means for your installation.
UL 294 is the Underwriters Laboratories standard for "Access Control System Units." It defines how access control equipment — panels, readers, locks, and supporting hardware — must be designed and tested to be listed (certified) for life safety and security applications. Many AHJs, insurance companies, and building codes require UL 294 listed equipment for access control installations in commercial, healthcare, and government facilities.
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