1-7 of 7 hubssort by Hot Best Latest
92Fail 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 ...
0 comments81Exit Devices with Electric Latch Retraction
Almost all exit device manufacturers offer the option of electric latch retraction on their touchbar-style exit devices. Different manufactures may call it by other names such as 'latch pull-back' or 'remote...
4 comments
79How 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...
2 comments
73Door Annunciator Systems
Door annunciator systems vary widely in complexity from simple single gang plates with a few LED's to rack mount panels with multiple access control options. New technology permits full integration with the...
7 comments
68How to Create a Basic Mantrap System
A mantrap (otherwise known as a security interlock system) is a locking system that prevents one door opening before another is closed. One very popular application for a mantrap is on a clean room, where it...
0 comments
59Product 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...
1 comment
73Choosing 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...
0 comments
