L-CH832PST-A AR LIGHT W BLUETOOTH SPEAKER RF Exposure Info RF Exposure Letter Jiashan Dinghao Outdoor Leisure Products Co., Ltd

Jiashan Dinghao Outdoor Leisure Products Co., Ltd AR LIGHT W BLUETOOTH SPEAKER

Page 1 of L-CH832PST-A AR LIGHT W BLUETOOTH SPEAKER RF Exposure Info RF Exposure Letter Jiashan Dinghao Outdoor Leisure Products Co., Ltd

RF Exposure evaluation
According to 447498 D01 General RF Exposure Guidance v05
The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at
test separation distances ≤ 50 mm are determined by:
[(max. power of channel, including tune-up tolerance, mW)/(min. test
separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for
10-g extremity SAR, where
 f(GHz) is the RF channel transmit frequency in GHz
 Power and distance are rounded to the nearest mW and mm before
calculation
 The result is rounded to one decimal place for comparison
Ant gain =0dBi; so Ant numeric gain=1.0
For Bluetooth BR/EDR
pt=1.921dBm =1.56mW at 2402MHz
So (1.56mW/5mm)x √2.402GHz = 0.484<3
For BLE
pt=-5.220dBm =0.30mW at 2440MHz
So (0.30mW/5mm)x √2.440GHz = 0.0942<3
Then SAR evaluation is not required
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Document ID4030876
Application IDcZoVXG0Wj76VMUKCp52RFg==
Document DescriptionRF Exposure evaluation
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
Display FormatAdobe Acrobat PDF - pdf
Filesize53.26kB (665798 bits)
Date Submitted2018-10-10 00:00:00
Date Available2018-10-10 00:00:00
Creation Date2017-03-09 15:10:28
Producing SoftwareAcrobat Distiller 9.0.0 (Windows)
Document Lastmod2018-10-10 18:31:52
Document TitleRF Exposure Letter
Document CreatorPScript5.dll Version 5.2.2
Document Author: Administrator

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