With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
lldpXMedLocXPoEPSEPowerSource
lldp X Med Loc X Po EPSE Power Source
1.0.8802.1.1.2.1.5.4795.1.2.12
Defines the type of PSE Power Source advertised by the local device. A value primary(2) indicates that the device advertises its power source as primary. A value backup(3) indicates that the device advertises its power Source as backup.
Back to LLDP-EXT-MED-MIB MIB page.
IPHost Network monitor allows you to monitor lldpXMedLocXPoEPSEPowerSource on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.