David Bolton Reading a Sequence of Operation Diagram for Electrified Door Hardware: A Field and Spec Guide What This Guide Covers and Who It Helps Every electrified door opening -- whether it is an access-controlled entrance at a school, a monitored corridor door in a hospital, or a secured server vestibul... access control electrified hardware hardware specification life safety sequence of operation Sep 3, 2026 Our Blog
David Bolton Locking Down the Server Room: How to Spec Door Hardware for Data Center Security What This Guide Covers -- and Who It Is For Server rooms and data center enclosures have hardware requirements that sit at the intersection of physical security, life safety code, and continuous-uptim... access control commercial door hardware data center electrified hardware server room security Aug 30, 2026 Our Blog
David Bolton Your Phone Is the Key: What to Know Before Specifying Mobile Credentials and Reader Compatibility What This Article Covers -- and Who It Helps More facilities are moving away from plastic keycards and toward smartphone-based access control. If you are a contractor quoting an electrified opening pa... BLE readers access control commercial door hardware electrified hardware mobile credentials Aug 25, 2026 Our Blog
David Bolton Mantrap Installations: How to Specify the Right Hardware for a Two-Door Security Vestibule What This Guide Covers and Who It Is For A mantrap, also called a security vestibule or airlock entry, is a controlled access passage that uses two doors in sequence to prevent tailgating and unauthor... access control commercial door hardware electrified hardware exit devices security vestibule Aug 20, 2026 Our Blog
David Bolton From Signal to Secured: How Emergency Lockdown Systems Actually Talk to Door Hardware What This Article Covers and Who It Helps When a building triggers a lockdown -- whether at a K-12 school, a hospital campus, or a corporate facility -- the door hardware has to respond correctly, imm... access control electrified hardware life safety lockdown integration school security Aug 16, 2026 Our Blog
David Bolton Anti-Passback Rules: What Access Control Specifiers and Facility Teams Get Wrong at the Door What This Article Covers -- and Who It Helps Anti-passback is one of the most misunderstood rules in access control system design. Facility managers, security integrators, and commercial contractors o... access control door position switches electric strikes electrified hardware security hardware Aug 16, 2026 Our Blog
David Bolton Cylindrical or Mortise Lockset: The Decision Criteria That Actually Drive the Right Choice Why This Choice Matters Before the Door Gets Prepped Specifiers, commercial contractors, and facility managers face this question on nearly every project: cylindrical lockset or mortise? The answer is... access control commercial door hardware cylindrical locks locksets mortise locks Aug 15, 2026 Our Blog
David Bolton Adding Card Access to an Existing Mortise Lock: What Actually Has to Change at the Door What This Article Covers and Who It Helps Facility managers, security integrators, and commercial hardware specifiers frequently face the same challenge: a building already has solid-performing mortis... access control credential readers electrified hardware mortise locks retrofit Aug 8, 2026 Our Blog
David Bolton Concealed Power Transfer on Doors With Closers: Routing Wires When the Frame Head Is Already Occupied The Problem Nobody Plans for Until the Closer Template Goes Down This article is for commercial hardware contractors, access control integrators, school facilities teams, and specifiers who need to tr... access control door closers electrified hardware fire-rated openings power transfer Jul 29, 2026 Our Blog
David Bolton Electric Latch Retraction on Exit Devices: How Access Control Unlocks the Door Without Touching the Bar What This Article Covers and Who It Helps If you are specifying or installing an access-controlled opening that also requires panic hardware, electric latch retraction (ELR) is the mechanism that ties... access control electric latch retraction electrified hardware exit devices fire-rated hardware Jul 28, 2026 Our Blog
David Bolton Electrified Exit Device Trim: How the Outside Lever Controls Ingress Without Blocking Egress What This Article Covers and Who It Helps Electrified exit device trim is the outside lever, handle, or pull mounted on the secure side of a panic bar that is controlled by an access system rather tha... access control electrified hardware exit devices fire-rated door hardware panic hardware Jul 24, 2026 Our Blog
David Bolton What Happens to Your Access Control System When the Power Goes Out Why Backup Power Is a Core Part of Any Access Control Design This article explains how battery backup works in commercial access control systems, what happens to electrified door hardware when buildin... access control battery backup electrified hardware life safety power supply Jul 23, 2026 Our Blog
