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# AWS::IoTFleetWise::Campaign ConditionBasedSignalFetchConfig
<a name="aws-properties-iotfleetwise-campaign-conditionbasedsignalfetchconfig"></a>

Specifies the condition under which a signal fetch occurs.

## Syntax
<a name="aws-properties-iotfleetwise-campaign-conditionbasedsignalfetchconfig-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-iotfleetwise-campaign-conditionbasedsignalfetchconfig-syntax.json"></a>

```
{
  "[ConditionExpression](#cfn-iotfleetwise-campaign-conditionbasedsignalfetchconfig-conditionexpression)" : String,
  "[TriggerMode](#cfn-iotfleetwise-campaign-conditionbasedsignalfetchconfig-triggermode)" : String
}
```

### YAML
<a name="aws-properties-iotfleetwise-campaign-conditionbasedsignalfetchconfig-syntax.yaml"></a>

```
  [ConditionExpression](#cfn-iotfleetwise-campaign-conditionbasedsignalfetchconfig-conditionexpression): String
  [TriggerMode](#cfn-iotfleetwise-campaign-conditionbasedsignalfetchconfig-triggermode): String
```

## Properties
<a name="aws-properties-iotfleetwise-campaign-conditionbasedsignalfetchconfig-properties"></a>

`ConditionExpression`  <a name="cfn-iotfleetwise-campaign-conditionbasedsignalfetchconfig-conditionexpression"></a>
The condition that must be satisfied to trigger a signal fetch.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `2048`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`TriggerMode`  <a name="cfn-iotfleetwise-campaign-conditionbasedsignalfetchconfig-triggermode"></a>
Indicates the mode in which the signal fetch is triggered.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `ALWAYS | RISING_EDGE`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)