I find the below reference ,but it is old. https://https://helpdesk.paessler.com/en/support/solutions/articles/76000063902
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Hey KLev,
Please find current information about audible alarms for current PRTG Network Monitor versions in the article Which audible notifications are available in PRTG?.
Best regards,
Sven Roggenhofer [Paessler Technical Support]
Nov, 2018 - Permalink