With IPHost Network Monitor you can run simple snmp requests against a Liebert device in your network.
lcUpsOutputFrequency
Liebert Ups Output Frequency
1.3.6.1.4.1.476.1.1.1.1.4.1
The current output frequency. (Unit of measure: Hertz)
Back to LIEBERT-UPS-MIB MIB page.
IPHost Network monitor allows you to monitor lcUpsOutputFrequency on Liebert device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Liebert uninterruptible power sources right now.