With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cefcModulePowerConsumptionTable
Cisco Entity Field Replaceable Unit Control Module Power Consumption Table
1.3.6.1.4.1.9.9.117.1.8.2
This table contains the total power consumption information for modules whose ENTITY-MIB entPhysicalTable entries have an entPhysicalClass of 'module'.
Back to CISCO-ENTITY-FRU-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor cefcModulePowerConsumptionTable 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.