With IPHost Network Monitor you can run simple snmp requests against a Liebert device in your network.
systemVoltage
system Voltage
1.3.6.1.2.1.1.2
System voltage, stored as mV, including positive or negative sign. The integer 2147483647 represents invalid value.
Back to EES-POWER-MIB MIB page.
IPHost Network monitor allows you to monitor systemVoltage 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 supplies right now.