Specifications

Doors
TM
Users Guide Keri Systems, Inc.
5-20 Section 5: Monitor and Update Controllers 01914-005 Rev. 5.9
Figure 5-7: Sound Alert Setup - Unknown Key
9. Click on the button. If the sound alert change is not saved before clicking any other button
or exiting the Setup Monitor window, the data entered is lost and must be re-entered.
Do NOT enable the “Operator Silenced Alert Sound” message. Enabling this message can cause
an endless loop of alarm acknowledgement generating a new event to be acknowledged.
NOTE: When a card is presented to a controller that the controller does not recognize, the controller
records an Unknown Key event message to the controller’s event buffer. When the event buffer is
downloaded to the host computer, the Doors program reviews the list of Unknown Key messages and
compares the card ID numbers to the user list. Any Unknown Key messages associated with card IDs
that are in the user list are converted to Access Denied messages. This differentiates between cards that
are truly “unknown” to the system from cards being presented by a user in an attempt to access an area
in which the user is not allowed.