Door hardware determines whether an access-control decision becomes reliable physical security. The reader identifies a credential, the controller applies a rule, and the opening must then unlock, close, latch and permit the required egress. This reference explains the main hardware options and the records needed to choose them for commercial properties in Pennsylvania and the

Access-control code review begins with the actual opening and its required egress function. A card reader, electric strike or magnetic lock is not automatically compliant or noncompliant on its own. The complete arrangement must match the adopted requirements, listed equipment, building use and approved design. This guide provides a review framework for Pennsylvania and the

Electrified locks, readers, controllers and power-transfer devices depend on compatible wiring, protected pathways, correct voltage and a tested opening sequence. Cable selection must follow the actual equipment documentation, electrical code and building conditions—not a universal wire-size recipe. Map the opening and its circuits Before specifying cable, record the door, frame, lock or exit device, current

Commercial access-control credentials can be cards, key fobs, mobile identities, individual PINs or biometrics. Each approach has different security, usability, privacy, administration and migration requirements. The right choice depends on the complete system, not a reader’s appearance. Commercial access-control reader, photograph by Jakub Żerdzicki / Unsplash. Illustrative equipment. The three authentication factors An authentication factor