ADT FOCUS 200 PLUS Installation And Setup Manual page 93

Card Readers
The card readers:
•
Are installed near the frame of the door.
•
Read a coded card to determine whether a person will be permitted access.
•
Are used with a separate electric door strike or other electrically controlled door- releasing device.
•
Are categorized by the type of card that they read. Three basic types of cards are:
1. Magnetic stripe (mag stripe)
2. Wiegand
3. Proximity (prox)
Card readers are therefore generally known as mag stripe, Wiegand, or prox readers.
•
Are also categorized by the way the card must be presented for reading:
Card Swipe − The card is "swiped" across a slot in the reader.
1.
Insert − The card is inserted fully into a narrow slot, and is read as it is withdrawn
2.
Proximity − The card is passed in close proximity to the reader, which uses energy to
3.
determine the code on the card.
•
May come with a keypad for added security, so that a PIN number can be entered in addition to the
card code. For these applications, the ACIU can accommodate any PIN number of 1-8 digits along
with the associated card code.
•
May feature an LED display to inform the user of the card-reading and access-control process.
Typically, a red-green LED lighting arrangement is used. Some readers use a bi-color LED and
others use two LED's. On most readers, the red LED is normally lit to indicate that the reader is
receiving power. When a card/key is being read, the red LED blinks off and, if access is granted, it
turns green.
Key Readers
The key readers:
•
Read the code embedded in the shaft of a metal key.
•
Utilize a reader that has been integrated into a lock cylinder.
•
Are installed near the door frame.
•
Are used with a separate electric door strike or other electrically controlled door-releasing device.
Keyloks
The keyloks:
•
Are installed in the handle of a key-operated doorknob or other door-locking mechanism.
•
Cylinder, which replaces the key cylinder of the lock, has both a key reader and a built-in electrical
releasing mechanism.
When a key with valid code is inserted, the ACIU provides the releasing voltage allowing the key to be
turned to unlock the door. When the key is turned, it operates a cam that can be linked to various types
of unlatching mechanisms.
Note: Because the Keylok is installed on the door rather than near the frame, wiring must be run from
the Keylok, through the door, to a flexible cord. The flexible cord carries the wires from the edge of the
door onto the door frame, so that a connection can be made to the ACIU.
Section 10 – Access Control
10-7