power local : Set the transmit power for the 802.11b, 2.4-GHz radio or the 5-GHz radio to one of the power levels allowed in your regulatory domain.
power client : Set the maximum power level allowed on client devices that associate to the wireless device.
The settings allowed in your regulatory domain might differ from the settings listed here.
The local parameter tells the client to set its transmitter power to match the access point's local power setting. This limits the client to the higher OFDM or CCK power set on the access point.
The maximum transmit power depends on your regulatory domain and the antenna gain for your access point or bridge. This command requires the client radio to be turned on and enabled to determine the valid power settings configured on your access point.