RF Exposure Info(SAR)

FCC ID: OU9LS208-B06

RF Exposure Info

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FCCID_2507245

                                                                                                                                                  Product Service


                                                         RF exposure Estimation

1.         Introduction
           The EUT is Bluetooth body fat analyzer, which contain Bluetooth function inside.

2.         Limit and Guidelines on Exposure to Electromagnetic Fields
           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 ensure that the public is not exposed to radio
           frequency energy level in excess of the Commission‘s guideline.

           According to KDB 447498 DQ1 Mobile Portable RF Exposure vO5r01, no SAR required if power
           is lower than the flowing threshold:
           The 1—g and 10—g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation
           distances s 50 mm are determined by:
            [(max. power of channel, including tune—up tolerance, mW)/{min. test separation distance, mm)]
            [VF(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 calculation25
                   * The result is rounded to one decimal place for comparison
                   + 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below

           The test exclusions are applicable only when the minimum test separation distance is s 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 according to 5) in section 4.1 is applied to
           determine SAR test exclusion.

3.         Calculation method

           [(max. power of channel, including tune—up tolerance, mW)/{min. test separation distance,
           mm)] +[Vf(GHz)] s 3.0

           BT4.0:
           Conducted Power + tune up tolerance = —2.31dBm=0.59 mW
           Distance = 5 mm
           f = 2.480 GHz

           [0.59/5] * SQRT(2.480) =0.19
           0.19 s 3.0
           Therefore, excluded from SAR testing.

TUV SUD Certification and Testing (China) Co., Ltd. Shenzhen Branch

eviewed by:                                                                                  Prepared By:
                                                                                                    5                      =
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Phoebe HuwEMC Project Manager                                                                   Felix Li/EMC Project Engineer
Date: 2015—01—16                                                                                Date: 2015—01—16
                                                            Jiangsu TUV Product Service Ltd. — Shenzhen Branch
6 floor, H Hall, Culture Creative Park, No. 4001, Fugiang Road, Futian District, Shenzhen 518048, P. R. China, Tel. +86 755 8828 6998, Fax: +86 755 8828 5299



Document Created: 2015-01-20 03:39:24
Document Modified: 2015-01-20 03:39:24

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