[Observium] Questions on Sensor Alerts

I've got some MikroTik routers that under Statuses shows the Primary and Backup power supplies.

Having a hard time trying to figure out how to get alerts for these to be sent. These are type of sensor I am pretty sure but what to match on? Is best way to match on MIBObject or description of some sort? I have tried a few things and can't seem to get the alerts to match.

Any direction would be appreciated.

Thanks