I can not find these information in product brief and regulatory document.
Can anyone help on it?
The Intel® Dual Band Wireless-AC 7265 and other Intel® Wireless Adapters are compliant with the standards defined by the http://www.wi-fi.org/ Wi-Fi Alliance. They use the channels specified in the standard for Wi-Fi bands 2.4 GHz and 5 GHz.
Regarding the specific transmit power, we advise you to check with the http://www.intel.com/content/www/us/en/support/topics/OEMs.html Computer Manufacturer Support about this, since adapters and drivers can be modified by the OEM, and the power specifications depend a lot on the antenna and specifications used by the Computer Manufacturer.