Sort Results: [ Hot | Best | Latest ]
67Basic Magnetic Lock System
by Tom Rubenoff
Electromagnetic locks are widely used in commercial and industrial applications. The lock is usually mounted on the header above the door and the armature is usually mounted on the door (see drawing below).... published 2 weeks ago
71Cipher Lock or Cypher Lock
by Tom Rubenoff
There is an actual Cyper Lock still available from the company formerly known as Continental Instruments, division of Napco Security. The Cypher Lock is perhaps one of the first electrical keypad systems ever... published 2 months ago
48School Security Hardware
by Tom Rubenoff
In this day and age, security in our elementary and secondary schools has become much more important. Schools across the country are implementing lockdown procedures in case of emergency. Lockdowns are... published 2 months ago
69Fail Safe and Fail Secure Electric Locking Devices
by Tom Rubenoff
DefinitionBasically: Fail Safe = power off, it's unlocked Fail Secure = power off, it's locked Electric locking devices include: Electric strikes Electromagnetic locks Electromechanical locks Electrified... published 3 months ago
62Keyless Locks
by Tom Rubenoff
Definition and History The term, "keyless lock", is somewhat of a misnomer because most so-called keyless locks do, in fact, have keys. When referring to a lock of this type, one calls it a key override... published 3 months ago
66Choosing an Electric Strike
by Tom Rubenoff
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... published 3 months ago
58Access Control System Considerations
by Tom Rubenoff
How many users? How many people will use the system now, and how many may use it in the future? Number of users is the first criteria for choosing an access control system. How many doors? Again, how many... published 3 months ago
63What is Delayed Egress?
by Tom Rubenoff
Delayed Egress DefinedDelayed egress is a means of delaying people as they try to exit a space. Delayed egress systems are used in places such as the National Gallery of Art in Washington, DC, where the... published 3 months ago
working