According to the BACnet protocol documentation:

Defines a standardized object whose properties represent the externally visible characteristics associated with a secured geographical zone for which authentication and authorization of a credential takes place to obtain physical access. Entrance to the zone takes place through entry access controlled points while the zone is exited through exit access controlled points. These access controlled points are represented by Access Point objects.

Objects of type accessZone have the following properties:

•ackedTransitions

•adjustValue

•alarmValues

•credentialsInZone

•description

•entryPoints

•eventAlgorithmInhibit

•eventAlgorithmInhibitRef

•eventDetectionEnable

•eventEnable

•eventMessageTexts

•eventMessageTextsConfig

•eventState

•eventTimeStamps

•exitPoints

•globalIdentifier

•lastCredentialAdded

•lastCredentialAddedTime

•lastCredentialRemoved

•lastCredentialRemovedTime

•notificationClass

•notifyType

•objectIdentifier

•objectName

•objectType

•occupancyCount

•occupancyCountEnable

•occupancyLowerLimit

•occupancyState

•occupancyUpperLimit

•outOfService

•passbackMode

•passbackTimeout

•profileLocation

•profileName

•propertyList

•reliability

•reliabilityEvaluationInhibit

•statusFlags

•tags

•timeDelay

•timeDelayNormal