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How to use two threshold triggers?




I run PRTG I want to monitor a file on a Windows Server. I want to be alerted when the file size is smaller than 1Ko and if the file age is bigger than 24 hours. I have used the "filesensor". I can specifie threshold triggers for the size and for the age but I want to be alerted if the two triggers are reached, not only one.

Is it possible?

Thank you


filesensor prtg trigger

Created on May 28, 2012 8:05:01 AM

1 Reply



This can be done using a simple trick: Add two file sensors, one monitoring the file size of your file, the other monitoring the age. In the Channels tab of both sensors, set Limits, so the sensor status shows a Warning or Down status when thresholds are breached.

Then add a third sensor, of the type Sensor Factory. In the status definition field, write a Boolean expression to switch the Status of this sensor depending on the status of your two file sensors. For details, please see

PRTG Manual: Sensor Factory Sensor

Created on May 28, 2012 12:19:00 PM by  Daniel Zobel [Product Manager]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.