Velleman HAA2801 - Manual (Page 36)

INTELLIGENT EGRESS BUTTON – AN UNIQUE FEATURE OF A CONTEMPORARY KEYPAD
Most of the keypads for access control are just for controlling of “Going In” from outside. It is not
enough for today’s access control systems. In fact, controlling of “Going Out” is also very important in
many public passage areas. They are not allowed to use locks or digital keypads for stopping of “Going
Out” due to safety reasons. Such as hospitals, kindergartens, elderly homes, convenient stores,
emergency exits etc.. The wardens, teachers, shopkeepers and the guards are always required to
keep an eye on people to prevent unattended leaving, shoplifting, and illegal use of the emergency
exits.
The Intelligent Egress Button can be programmed to do something to get the attention of the person
on duty before the door is opened. The button offers programmable egress delay, delay with warning,
holding button required for the delay, momentary button contact with warning for the delay and even
gives alarm when a controlled door is opened.
Locations 90 and 91 below are the places for setting the desired functions for the Egress Button.
The functions programmed to the Egress Button do not affect the normal operation of the system with
its keypad. For the safety consideration, the operation of the keypad with PIN, Code or Card is always
in the first priority to give instant action to the output relay 1 for door strike.
It is
NOT required to program the Egress Button with the special function in normal use. Just leave it
on its default values.
WHERE AND WHY “GOING OUT” NEEDS ATTENTION
Examples for some areas may need an Intelligent Egress Button:
Hospital:
Some of the patients are not allowed to leave the ward without doctor’s permission. An egress button
with exit delay and warning beeps will help the nurse or warden to get the attention to the door when
the egress button is pressed. Further setting of the egress button with holding contact for the delay
even gives higher level of security to a controlled door.
Kindergarten:
Young children are always active. Some of them may be willing to go out to explore their ways of
playing. For safety reason, teachers have to watch all of them in the attended area. Leaving school
alone without the companion of parents or teacher is dangerous to the young children. An egress
button with delay and warning beeps will be helpful to prevent the children trying to go out without
getting the attention of the teacher.
Elderly Home:
Elderly needs constant attention and care. Some old people have poor memory. They may forget the
way to come back if they leave home alone. An egress button with delay and warning beep will easily
get the attention of the warden before the door is open.
Convenient Store:
Most of the convenient stores have just only one or two shopkeepers on duty. They are usually the
cashier. Shoplifting may easily happen while the shopkeeper is busily serving customers at the cashier
desk. A holding contact egress button with delay and warning beeps may help to stop most of the
shoplifting. As the thief knows that he is gotten attention by the shopkeeper before the door is open.
High Traffic Passage:
A short buffer time may be necessary for opening a door outward after pressing the egress button for
those exits open to a high traffic passage. An egress button with short delay and warning beeps helps
the user to pay attention to the people passing by to prevent hitting them when the door is pushed
outward.
Emergency Exit:
Emergency Exit is not open to the public for daily use. It is for emergency case only. It is usually closed
and watched by the security guards. The egress button of this keypad can be programmed to offer exit
delay with warning beeps and even gives alarm output to trigger an alarm system when the door is
forced to open or the door is open after the exit delay expired. It is an useful tool to get the attention of
the person on duty.
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