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49 Articles

access control × ×

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...

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Aug 20, 2026

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...

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Aug 16, 2026

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...

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Aug 16, 2026

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...

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Aug 15, 2026

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...

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Aug 8, 2026

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...

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Jul 29, 2026

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...

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Jul 28, 2026

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...

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Jul 24, 2026

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...

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Jul 23, 2026

Access Level Scheduling Explained: How Time-Based Door Permissions Change What Your Hardware Needs to Do

What This Article Covers and Who It Helps Access level scheduling is the practice of assigning different door permissions to different credential holders based on the time of day, day of week, or cale...

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Jul 15, 2026

Biometric Readers in High-Security Door Applications: What to Know Before You Specify

Biometric readers are showing up on more hardware schedules across government facilities, data centers, healthcare wings, and school secure-access zones. But specifying one correctly means understandi...

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Jul 8, 2026

Door Held Open Alarms: How to Stop Propped Doors Before They Become a Security or Safety Problem

What This Article Covers Door held open alarms detect when a door stays open past a set time limit and trigger an audible alert before a propped door becomes a security breach, fire hazard, or code vi...

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Jul 6, 2026

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