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MICROgarde controller I and II
04.20.11.18
1.2.4
Options
The simplest possible system, in addition to the PC running the software, would comprise 1
controller, 1 reader, one 12V power supply (for both lock and controller) and one electric lock
release. The following extras are available, some of which may be required depending on
site layout and cable distances:
Lock Power supply
We recommend the use of separate power supplies for locks. In most cases however, using
one supply for the controller and the lock(s) it controls will cause no problems provided the
supply has sufficient current output, and the cable distances do not result in significant
voltage drops. If in doubt, use one supply for the controller, and one supply for each lock.
Door sensor
Using a switch to detect when a door opens has two possible benefits:
It minimizes the length of time the door is unlocked after access has been granted. The
door locks immediately it re-closes - regardless of the "lock release time" setting.
The event list shows when doors open and close. If an exit reader or exit button is fitted,
the event list shows if the door is forced open (i.e. opens without either a card or an exit
button being used).
Exit button
Depending on the type of lock release, fitting an exit button may be the most convenient way
of letting someone out of a secured area if no exit reader is fitted. Pressing the button
causes the lock to be released just as if a card had been used.
Exit reader
If you want to monitor the whereabouts of all card holders, fitting an exit reader is necessary.
You can set reader properties so that you can see whether card holders are "On Site" or not.
Readers with keypads
There is always a risk that someone can gain access with a lost or stolen card, if the card is
used before it is deleted from the system. However, if a reader has a keypad fitted, then it is
possible to require a code to be entered as well as the card and this increases security
because only the rightful card holder should know the code for that card.
Alternatively, you can reduce security by using just a pin only code. It is possible to have
weekly schedules of card and pin; card only and pin only.