Settings to use for power sensor

We are trying to configure poe environmental sensor with power monitoring. The user guide has no information regarding this sensor. What settings do we need to enter in order to inform us of a brief power outage?



Current settings are 0.00 warning and 0.00 down.



Thank you.

I guess I need to further clarify my question. I disconnected power to the sensor, and it did not generate an alert email (test emails work).



In the Warning Range and Down Range settings for power, the settings are currently 0.00 and 0.00 respectively.



I am guessing that it is a time value, as it is giving a > sign for both. Do I enter a time value that power is disconncted? If so, is the format minutes.seconds?