RF Exposure

Shenzhen Zhangle Tong Technology Co., LTD A7 hearing earphone 2BGP9-A7 2BGP9A7 a7

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RF Exposure Evaluation
According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied.
For 100 MHz to 6 GHz and test separation distances  50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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
Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.


Max Conducted Power(dBm)

Tune-up Power(dBm)

Max Tune-up Power(dBm)

Max Power(mW)

Frequency(MHz) 2402

Min. distance(mm)

Calc. thresholds

limit 3.0

So a SAR test is not required


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