Steren NB-600 NO-BREAK Manual De Instrucciones página 24

Shutdown settings
This section allows you to execute and save program and file before
shutdown system and UPS . The delay-time of shutdown can be set
according to the actual condition of the connected UPS.
Warning message
Use this option to select the type of warning message. This message will
display when the equipment turns off.
Warning sound
This option allows you to activate or deactivate the warning sound, also you
can set the repeating interval, it will sound when the battery is low or the
utility fails.
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