With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwrMaxTxPower
Cisco Wireless Max Tx Power
1.3.6.1.4.1.9.9.136.1.5.1.1.9
This object represents the maximum power that the RF subsystem can supply the antenna.
Back to CISCO-WIRELESS-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cwrMaxTxPower on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.