[Observium] 6500 PSU Voltage Check

Hi All,

I was wondering if I could configure alerts for the voltage on a couple of 6500 power supplies (to try and alert on power failures).

I've used the Entity Type of Voltage and this picks up the Enitity's from the 6500 (110/220v AC power supply, 2500 watt 2 - Power Supply 2 power-input) however I'm unsure on how to configure the 'Check Conditions' and 'Associations'. The below is a guess for the check conditions:

Metric Condition Value sensor_voltage lt 220

In Associations I have simply put * * which I suspect is incorrect.

Has anybody else tried setting up checks on voltage?

Thanks

Jake