rf exposure

FCC ID: SF4-MZX634

RF Exposure Info

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FCCID_4258641

RF Exposure Requirements

Product Description: Bluetooth Earphones
Model No.: MZX634
FCC ID: SF4-MZX634

According to the KDB 447498 D01 v06 section 4.3.1, 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 calculation17
- The result is rounded to one decimal place for comparison

Calculation Result:

Tx frequency range: 2402-2480MHz
Min. test separation distance: 5mm
Maximum Conducted Output Power: 7.159dBm
Tune-Up output power: 8dBm
RF channel transmit frequency: 2480MHz
Result: 2.0
Limit: 3.0



The exclusion thresholds is 2.0≤3, so the transmitter complies with the RF exposure requirements
and the SAR is not required.



Document Created: 2019-04-29 15:54:07
Document Modified: 2019-04-29 15:54:07

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