User's Manual

How to Install the ISONAS IP-Enabled Reader-controller 22
2.2.3: WIRING THE REX BUTTON
The REX (Request for Exit) signal expected by ISONAS
Reader-controllers is a momentary closure. You can
generate this signal with a pushbutton, infrared motion
detector, or other simple device. Typically the REX is placed
adjacent to the door so that people can press the button
and let themselves out the door without setting off the
alarm. When pressed, this button tells the ISONAS Reader-
controller that that someone wishes to pass through the
door, and the latch releases. In the ISONAS Crystal
software you can configure how the door responds to the
REX button.
You must wire this switch through the ISONAS Reader-controller. (See Figure 9)
First, connect one terminal of the
momentary switch to the Reader's
green wire. Then, connect the
switch's other terminal to the
Reader's common ground wire
(black).
2.2.4: WIRING THE AUX
INPUT
In host mode, the AUX Input is
another momentary switch which
functions exactly like the REX
button. (See Figure 9) The AUX
Input might be controlled by a
relay on an intercom at the door.
This would allow the receptionist
to unlock the door using the
intercom system’s functionality.
In the ISONAS Crystal software
you can configure how the door
responds to the AUX button.
In local mode, the door will stay
unlocked while the AUX switch is
closed.
Wiring for the AUX button is
similar to that of the REX button.
First, connect one terminal of the
momentary switch to the Reader's
orange wire. Then, connect the
switch's other terminal to the
Reader's common ground wire (black). Figure 9
About REX and AUX
REX and AUX are
both normally open
inputs. No action is
taken until the input
is closed.