# Criteria for retrieving channel property information

The `criteria` object specifies which sensor channel property to retrieve information about.

The `criteria` object has two main properties: `ChannelInfoMap` and `PropertyId`. These are described in the following table.

Table: Criteria object properties
Property | Description | Type | Value
--- | --- | --- | ---
`criteria.ChannelInfoMap` | Specifies the sensor channel of the property. Retrieve this object using the `FindSensorChannel` method. For more information about the object, see section Sensor channel information. | object | See section Sensor channel information.
`criteria.PropertyId` | Specifies the identifier of the property. | string | Possible values: `"Availability"` `"ChannelAccuracy"` `"ChannelDataFormat"` `"ChannelScale"` `"ChannelUnit"` `"ConnectionType"` `"DataRate"` `"Description"` `"MeasureRange"` `"ScaledRange"` `"SensorModel"`