Create Alert Rule
Go to “Alerts -> Alert Rules” Then “Create rule from Collection”
Search for “Sensor under limit” and Select
![](https://www.incredigeek.com/home/wp-content/uploads/2020/01/image-3.png)
Configure Alert Rule
Add another rule to limit to just the Voltage Sensors by using the “sensors.sensor_class = Voltage”
Select your Groups and Transports and Save.
![](https://www.incredigeek.com/home/wp-content/uploads/2020/01/image-4.png)
Disable Alerts for Unused Ports
You may get some alerts because there are some ports that do not have any any voltage on them. You can disable them on a per device basis by going to the “device -> Edit -> Health” and turning alerts off
![](https://www.incredigeek.com/home/wp-content/uploads/2020/01/image-5-1024x627.png)