The FCC will implement the new version of KDB 447498 D04 Interim General RF Exposure Guidance v07 regulations from the second quarter of the United States. The main changes are as follows:

The new version of KDB mainly updates the power threshold of the SAR exemption test, which is more stringent than the old version. The affected products mainly include Bluetooth, WIFI wearable/portable devices.

Legacy requirements

new requirements

It can be seen from the comparison that for the 2450MHz/5800MHz frequency band where the Bluetooth and WIFI devices are located, the 2450MHz threshold is reduced from the original 10mW to 3mW, and the 5800MHz frequency band is reduced from the original 6mW to 1mW; Portable equipment requires increased SAR testing.

The new version of the regulations will be enforced after 2022.3.31!