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90Fail Safe and Fail Secure Electric Locking Devices
Definition Basically: Fail Safe = power off, it's unlocked Fail Secure = power off, it's locked Electric locking devices include: Electric strikes Electromagnetic locks Electromechanical locks ...
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75How to Create a Basic Wireless Door Release System
A wireless door release system works the same way a garage door opener works. As shown in the illustration at right, a radio frequency transmitter is used to signal a receiver. When the receiver receives the...
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80Choosing an Electric Strike
First a little vocab: Latchbolt - spring loaded part of a lock that actually holds the door closed Lock Front - the part of the lock that is visible only when the door is open. The latchbolt projects from...
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76Electrifying an Aluminum Store Front Opening
Aluminum doors and frame are used in many commercial applications. Usually they are exterior doors, but sometimes they are used in interior spaces as well. They are made of aluminum tubing and glass. Often...
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79Exit Device Option Overview
See also: Exit Device and Panic Hardware Basics Exit Devices with Electric Latch Retraction What Is Delayed Egress? Exit Device Trim and Controls This article covers a few of the options available...
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63Product Review: Aiphone JA and JF Series Intercom
In keeping with Aiphone's tradition of quality products that are easy to install, their JA and JF series audio / video intercoms more than live up to their reputation. The JFS-1AD boxed set includes the...
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74How to Survey a Job Site for Electric Locking
An access control system that is hard wired and/or centrally controlled is nothing more than a fancy electrical switch that is used to turn some kind of electric locking device on and off. When you present...
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