# ConditionBasedSignalFetchConfig
<a name="API_ConditionBasedSignalFetchConfig"></a>

Specifies the condition under which a signal fetch occurs.

## Contents
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 ** conditionExpression **   <a name="iotfleetwise-Type-ConditionBasedSignalFetchConfig-conditionExpression"></a>
The condition that must be satisfied to trigger a signal fetch.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 400.  
Required: Yes

 ** triggerMode **   <a name="iotfleetwise-Type-ConditionBasedSignalFetchConfig-triggerMode"></a>
Indicates the mode in which the signal fetch is triggered.  
Type: String  
Valid Values: `ALWAYS | RISING_EDGE`   
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iotfleetwise-2021-06-17/ConditionBasedSignalFetchConfig) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotfleetwise-2021-06-17/ConditionBasedSignalFetchConfig) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotfleetwise-2021-06-17/ConditionBasedSignalFetchConfig)