With IPHost Network Monitor you can run simple snmp requests against a Liebert device in your network.
envLED2Label
env LED2 Label
1.3.6.1.4.1.476.1.2.1.1.1.4.3.2
A user-defined text string associated with Output LED Number 2. The text string is stored in non-volatile memory.
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IPHost Network monitor allows you to monitor envLED2Label 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.