Setting and enabling the thresholds causes the PXE to generate alert notifications when it detects that any component's power state crosses the thresholds. See The Yellow- or Red-Highlighted Sensors.
There are four thresholds for each sensor: Lower Critical, Lower Warning, Upper Warning and Upper Critical.
To avoid generating a large amount of alert events, you can set the assertion timeout and deassertion hysteresis.
For detailed information, see Sensor Threshold Settings.
Note: After setting the thresholds, remember to configure event rules. See Event Rules and Actions.