"Input trigger" is specifies which parameter triggered the creation of a record.
This is important because it is important to know which parameter triggered the creation of records when analysing raw data.
1- Enable Raw data in your browser and access Raw data report.
2- Search for Input trigger column.
Values for this parameter indicate the IO ID of the parameter that has triggered the record creation.
3- Download an open the FMIO Parameter List
4- Search the IO ID for more information about the trigger parameter.
In the example above, we see records where triggered by Time and Movement sensor.
Keep in mind that only parameters than support and are set to Event on Change or Hysteresis will be able to trigger records.