The Request to Exit (REX) Button
AC-C31V Installation Manual
Page 14
9.
The Request to Exit (REX) Button
The REX Button is used to open the door without the use of a PIN
code, and must be located inside the premises in order to be
secured. It is usually located in a convenient location, such as
inside the door or at a receptionist's desk. The function of the REX
Button depends on whether the Lock Strike Relay is programmed
for Fail Safe Operation or for Fail Secure Operation. The door
chime in the BL-D40 does not sound when the REX Button is used
to open the door.
•
Fail Secure Operation: From the moment the REX Button is
pressed, the door remains unlocked until the "Lock Strike
Release Time" has passed. After this time, the door is locked
even if the REX Button has not been released.
•
Fail Safe Operation: From the moment the REX Button is
pressed, the door remains unlocked until the REX Button is
released and the "Lock Strike Release Time" has passed. In this
case, the "Lock Strike Relay" only begins its countdown once
the REX Button has been released.
