With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
bsnAPIfDot11TxPowerLevel8
bsn AP If Dot11 Tx Power Level8
1.3.6.1.4.1.14179.2.2.8.1.28
The transmit output power for LEVEL8 in mW. It is 1/128th of the Maximum power level available on an AP interface.
Back to AIRESPACE-WIRELESS-MIB MIB page.
IPHost Network monitor allows you to monitor bsnAPIfDot11TxPowerLevel8 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.