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Access
Control Systems
An access control system protects
business assets and employees by allowing only authorized personnel to
enter the business or a particular area of the business. Employee access
to certain areas can be restricted by date and time of day, with a
permanent record of every entry by employee. This provides a powerful
audit trail of activity at minimal cost. An access control system not
only enhances your facility’s security, but is a valuable tool that
necessitates employee accountability.
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Readers
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- Card Swipe
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A magnetic card swipe reader can
read the magnetic strip of an access card or any encoded card.
A small disk carried on
a key chain provides the embedded information to release the door.
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A card merely touches the proximity reader without any physical
insertion. This is the preferred method of door release for outdoor
applications, because it is the most vandal resistant.
Unlike the other "possession based" methods, a push-button is a
"knowledge based"
access. This means that anyone with the knowledge of the 4 digit code
can gain access. This is the least secure method. Also, any onlooker
can watch the digits being pressed.
Regardless of the controller used, and
access control system provides an event history of door traffic flow by
user. It can also provide time and attendance management information.
Special requirements can be integrated
into the access control system such as an "anti-passback" feature,
or a "propped-open door" relay, if the door is held open beyond a
specified time.
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Locking
Devices
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Electric Door Strikes -
Electric door strikes are latching
devices that are released electronically when any of the readers permits access. Unauthorized individuals will be denied
access.
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Mag–Locks - Mag-Locks
is an abbreviated term for an electro-magnetic lock. A strong electro-magnetic
lock on the door and frame can provide 300 lbs., 600 lbs., or 1200 lbs.
of holding strength.
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Exiting
Requirements
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The security of access control is in
direct conflict with unrestricted egress required by the fire code. If the
building is on fire, occupants of a building must be able to exit
quickly and with no restrictions. With an electric door strike, a panic
exit bar will mechanically allow exit. However, with a mag-lock
the door must be released electronically. A
"request-to-exit" button must be provided so that an
individual wishing to exit may do so. In case of fire, control functions
from the building’s fire alarm system must electronically release the
door. |
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