Information

FCC official website announced on 30 March, 2022 that KDB 447498 D04 (hereinafter referred to as D04) Interim General (Transition Period) RF Exposure Guidance Document which originally planned to be enforced from April 1, 2022, will be postponed to 1, July 2022. If relevant equipment exceeds limit requirements, a SAR test is required. Here are some examples.

1. 2.4G Wi-Fi and Bluetooth portable devices with a distance of less than or equal to 5mm from the human body, transmit power exceeds the limit of 2.79mW (4.46dBm) should have SAR test compulsorily.

2.5.8G Wi-Fi portable devices with a distance of less than or equal to 5mm from the human body, transmit power exceeds the limit of 1.38mW (1.39dBm) should have SAR test compulsorily.

 

List of More Common Frequencies and Exempt Powers:

 

serial number	frequency  (GHz)	d  (cm)	p  (mW)	p  (dBm)
1	2.4	0.5	2.79	4.46
2	5.2	0.5	1.5	1.77
3	5.4	0.5	1.46	1.63
4	5.6	0.5	1.42	1.51
5	5.8	0.5	1.38	1.39

 

Sources：

       

（Original text of the announcement）

 

Remark 1: 

Note on 447498 D04 Interim General RF Exposure Guidance. 

Remark 2: 

Transition Period until June 30, 2022. 

Remark 3:

 Attachment "447498 D04 Interim General RF Exposure Guidance v01" can be used for equipment authorization and must be used in its entirety along with any other associated revised KDB RF exposure procedures and policies (including FCC-TCB conference presentations). 

Remark 4:

 After June 30, 2022, all applications must only use new procedures which will be published as "D01 447498 General RF Exposure Guidance v07", and based on "447498 D04 Interim General RF Exposure Guidance", replacing KDB "447498 General RF Exposure Guidance" v06".