With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ons15501PowerSupply1Level
ons15501 Power Supply1 Level
1.3.6.1.4.1.1869.11.11.2.11
The voltage fed through power supply 1. The value of the attribute is 10 times the the value in volts.
Back to ONS15501-MIB MIB page.
IPHost Network monitor allows you to monitor ons15501PowerSupply1Level on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.