GE Security EST3 User Manual

Access control applications
3.6 EST3 Installation and Service Manual
Output circuit
Each CRC supports one output circuit in the form of N.O. and
N.C. dry contact connections. The output circuit can be used for
such devices as:
• Automatic door openers
• Door holder control
Card reader
By card reader, we mean any of the different types of credential
reader supported by the CRC. A card reader scans a card to
determine the card number and passes the card number to the
CRC.
A card reader is a self-contained module capable of reading one
type of access card and transmitting the card’s code to a card
reader controller.
All the required electronics are assembled in the card reader
housing. The card reader connects directly to the CRC, which
processes the card code and grants or denies access.
Each CRC can support several card readers. Typically, a CRC
will control an entry and exit card reader for the doorway. It can
also support multiple readers for such applications as two-person
rule or anti-passback.
Note that the CRC supports any type of reader that uses the
industry standard Wiegand output format. These include:
• Proximity
• Wiegand pin
• Magnetic stripe
• Bar code
• Keypad
• Smart card
• Biometric
For simplicity, we present all the applications in this chapter as
operating with proximity readers, but other reader types can be
used.
Some applications work best with card readers that support dual
LED control. The CRC uses two LEDs, or two LED states, to
indicate that further actions are required after the initial badging
operation, before access is granted. These applications are:
• Two-person rule
• Visitor and escort
• PIN schedule
Some card readers are also equipped with a keypad. The keypad
allows for entry of a PIN number in addition to the card code.

GE Security EST3 Specifications

General

Brand	GE Security
Model	EST3
Category	Security Sensors
Language	English