With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwrRfSupplyVoltageState
Cisco Wireless Rf Supply Voltage State
1.3.6.1.4.1.9.9.136.1.5.1.1.14
This object specifies whether the voltage supply to the RF unit is within specifications or not.
Back to CISCO-WIRELESS-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cwrRfSupplyVoltageState on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.