According to the BACnet protocol documentation:

Defines a standardized object whose Present_Value represents the result of an algorithmic process within the BACnet device in which the object resides. The algorithmic process itself is a local matter and is not defined by the protocol. For example, the Present_Value or state of the Multi-state Input object may be the result of a logical combination of multiple binary inputs or the threshold of one or more analog inputs or the result of a mathematical computation. The Present_Value property is an integer number representing the state. The State_Text property associates a description with each state.

Objects of type multiStateInput have the following properties:

•ackedTransitions

•alarmValues

•description

•deviceType

•eventAlgorithmInhibit

•eventAlgorithmInhibitRef

•eventDetectionEnable

•eventEnable

•eventMessageTexts

•eventMessageTextsConfig

•eventState

•eventTimeStamps

•faultValues

•interfaceValue

•notificationClass

•notifyType

•numberOfStates

•objectIdentifier

•objectName

•objectType

•outOfService

•presentValue

•profileLocation

•profileName

•propertyList

•reliability

•reliabilityEvaluationInhibit

•stateText

•statusFlags

•tags

•timeDelay

•timeDelayNormal