RF EXPOSURE EVALUATION

zhaowen

RF Exposure

HWLT FZE EWU-Y-1 2BNPT-EWU-Y-1 2BNPTEWUY1 ewu y 1

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FCC ID: 2BNPT-EWU-Y-1

RF EXPOSURE EVALUATION

EUT Specification

EUT Model Name Frequency band (Operating)
Device category
Antenna diversity
Max. output power Evaluation applied

ERA Wallet
EWU-Y-1
WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Others(13.56MHz) Portable (<20cm separation) Mobile (>20cm separation) Others ___ Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity 46.05 dBuV/m (-49.208dBm)(0.000012mW) MPE Evaluation SAR Evaluation

Standard Requirement

Portable Device
According to §15.247(i) and §1.1307b(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 levels in excess of the Commission's guidelines. See KDB 447498 D01 General RF Exposure Guidance V6, section 4.3.1.
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,16 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 The test exclusions are applicable only when the minimum test separation distance is  50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion.

FCC ID: 2BNPT-EWU-Y-1
Measurement Result

Channel Frequency
(GHz)
0.1356

Max Output power (dBm)
-49.208

Max tune-up tolerance
Output power (dBm)
-49.208±1

Max Output Max Output

power

power

(dBm)

(mW)

-48.208 0.000012

Calculation Value (Note 1)
0.0000047

Threshold Value
3.0

power=Transmitter Spurious-95.2= 46.05 -95.2= -49.208dBm Note 1: Calculation Value =[(max. power of channel, mW)/(min. test separation distance, mm)] ·[f(GHz)].
Fox example: 0.000012/5*0.1356= 0.0000047 3.0

According to KDB447498 D01 V6, threshold at which no SAR required is 3.0 for 1-g SAR, separation distance is 5mm, and no simultaneous SAR measurement is required.
The SAR measurement is not necessary.



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