According to §15

Benjamin

RF exposure report

KINGRAY ELECTRONICS Co., LTD KR810 Wireless Earbuds 2AML6KR810 2AML6KR810 kr810

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Document DEVICE REPORTGetApplicationAttachment.html?id=8200916
Shenzhen CTB Testing Co., Ltd.

FCC ID:2AML6KR810

Portable device

According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this

section shall be operated in a manner that ensures that the public is not exposed to radio

frequency energy level in excess of the Commission's guidelines.

According to KDB447498 D01 General RF Exposure Guidance V06

The 1-g SAR 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

When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to

determine SAR test exclusion.

EDR:

Conduct

Max

Channel ed Conducte Tune-up tune-up

Modulation Freq. power d power power power

(GHz) (dBm) (mW) (dBm) (dBm)

Max tune-up power (mW)

Result SAR

Distance (mm)

calculatio

Exclusion

n

threshold

SAR test exclusion

2.402 1.756 1.50

1±1 2.00

1.58

GFSK 2.441 2.008 1.59

2±1 3.00

2.00

2.480 1.778 1.51

1±1 2.00

1.58

2.402 2.564 1.80

2±1 3.00

2.00

 /4DQPSK

2.441

2.741

1.88

2±1 3.00

2.00

2.480 2.35

1.72

2±1 3.00

2.00

2.402 2.773 1.89

2±1 3.00

2.00

8DQPSK 2.441 2.979 1.99

2±1 3.00

2.00

2.480 2.595 1.82

2±1 3.00

2.00

<5

0.49127

3.00

<5

0.62347

3.00

<5

0.49918

3.00

<5

0.61847

3.00

<5

0.62347

3.00

<5

0.62843

3.00

<5

0.61847

3.00

<5

0.62347

3.00

<5

0.62843

3.00

YES YES YES YES YES YES YES YES YES

BLE:1M

Conduct

Max

Channel ed Conducte Tune-up tune-up

Modulation Freq. power d power power power

(GHz) (dBm) (mW) (dBm) (dBm)

Max tune-up power (mW)

Result SAR

Distance (mm)

calculatio

Exclusion

n

threshold

SAR test exclusion

2.402 1.556 1.43

1±1 2.00

1.58

GFSK 2.44 1.709 1.48

1±1 2.00

1.58

2.480 1.455 1.40

1±1 2.00

1.58

<5

0.49127

3.00

<5

0.49514

3.00

<5

0.49918

3.00

YES YES YES

BLE:2M

Conduct

Max

Channel ed Conducte Tune-up tune-up

Modulation Freq. power d power power power

(GHz) (dBm) (mW) (dBm) (dBm)

Max tune-up power (mW)

Result SAR

Distance (mm)

calculatio

Exclusion

n

threshold

SAR test exclusion

2.402 1.545 1.43

1±1 2.00

1.58

GFSK 2.44 1.797 1.51

1±1 2.00

1.58

2.480 1.655 1.46

1±1 2.00

1.58

<5

0.49127

3.00

<5

0.49514

3.00

<5

0.49918

3.00

YES YES YES

Conclusion: For the max result : 0.49918 FCC Limit 3.0 for 1g SAR.



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