RF Exposure Info

FCC ID: 2ATWD-040103

RF Exposure Info

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FCCID_4463936

                                  Shenzhen Huaxia Testing Technology Co., Ltd
                                  1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District,
                                  Shenzhen, China
                                  Telephone:     +86-755-26648640
                                  Fax:           +86-755-26648637                  Report Template Version: V04
                                  Website:       www.cqa-cert.com                  Report Template Revision Date: 2018-07-06



                RF Exposure Evaluation Report

Report No. :                      CQASZ20190600444E-02
Applicant:                        Zhejiang PDW Industrial Co., Ltd.
Address of Applicant:             Quanxi Industrial Park, Wuyi County, Jinhua City, Zhejiang, P.R. China 321200
Equipment Under Test (EUT):
EUT Name:                         315mHz OE TPMS Sensor (1pc)
All Model No.:                    04.01.03, 04.01.34
Test Model No.:                   04.01.03
Brand Name:                       PDW, PROCAST
FCC ID:                           2ATWD-040103
Standards:                        47 CFR Part 1.1307
                                  47 CFR Part 2.1093
                                  KDB447498D01 General RF Exposure Guidance v06
Date of Receipt:                  2019-06-10
Date of Test:                     2019-06-11 to 2019-07-02
Date of Issue:                    2019-07-02
Test Result :                     PASS*
*In the configuration tested, the EUT complied with the standards specified above




 Tested By:
                                                 ( Martin Lee)


 Reviewed By:
                                                  (Aaron Ma)


 Approved By:
                                                   ( Jack Ai)




The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to

the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full.


                                       Shenzhen Huaxia Testing Technology Co., Ltd
                                                         Report No.: CQASZ20190600444E-02


1   Version
                            Revision History Of Report

          Report No.         Version           Description           Issue Date
     CQASZ20190600444E-02    Rev.01            Initial report        2019-07-02




                              Page:2 of 6


                                                                                  Shenzhen Huaxia Testing Technology Co., Ltd
                                                                                                                     Report No.: CQASZ20190600444E-02



2         Contents
                                                                                                                                                                          Page
1       VERSION...................................................................................................................................................................... 2

2       CONTENTS.................................................................................................................................................................. 3

3       GENERAL INFORMATION........................................................................................................................................4
    3.1     CLIENT INFORMATION................................................................................................................................................ 4
    3.2     GENERAL DESCRIPTION OF EUT................................................................................................................................ 4
4       SAR EVALUATION.....................................................................................................................................................5
    4.1 RF EXPOSURE COMPLIANCE REQUIREMENT.............................................................................................................. 5
       4.1.1 Standard Requirement..................................................................................................................................5
       4.1.2 Limits................................................................................................................................................................5
       4.1.3 EUT RF Exposure..........................................................................................................................................6




                                                                      Page:3 of 6


                                                 Shenzhen Huaxia Testing Technology Co., Ltd
                                                                       Report No.: CQASZ20190600444E-02



3        General Information
3.1 Client Information
        Applicant:                 Zhejiang PDW Industrial Co., Ltd.
        Address of Applicant:      Quanxi Industrial Park, Wuyi County, Jinhua City, Zhejiang, P.R. China
                                   321200
        Manufacturer:              Zhejiang PDW Industrial Co., Ltd.
        Address of Manufacturer:   Quanxi Industrial Park, Wuyi County, Jinhua City, Zhejiang, P.R. China
                                   321200

3.2 General Description of EUT
         Product Name:             315mHz OE TPMS Sensor (1pc)
         All Model No.:            04.01.03, 04.01.34
         Test Model No.:           04.01.03
         Trade Mark:               PDW, PROCAST
    Hardware Version:              V6
    Software Version:              A1
        Sample Type:               Portable production
        Operation Frequency:       315MHz
        Channel Numbers:           1
        Modulation Type:           FSK
        Antenna Type:              Integral antenna
        Antenna Gain:              -0.36dBi
        Power Supply:              Button battery: DC3.0V

Note:
All model: 04.01.03, 04.01.34
Only the model 04.01.03 was tested, since the electrical circuit design, layout, components used and internal
wiring were identical for the above models, with difference being Trademarks and models.




                                          Page:4 of 6


                                                Shenzhen Huaxia Testing Technology Co., Ltd
                                                                     Report No.: CQASZ20190600444E-02



4    SAR Evaluation
4.1 RF Exposure Compliance Requirement
4.1.1 Standard Requirement
     According to KDB447498D01 General RF Exposure Guidance v06
     4.3.1. Standalone SAR test exclusion considerations
           Unless 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 Exclusion
     Threshold condition, listed below, is satisfied.
4.1.2 Limits
     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, 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




                                         Page:5 of 6


                                                     Shenzhen Huaxia Testing Technology Co., Ltd
                                                                       Report No.: CQASZ20190600444E-02




4.1.3 EUT RF Exposure
    eirp = pt x gt = (E x d)2/30
    where:
    pt = transmitter output power in watts,
    gt = numeric gain of the transmitting antenna (unitless),
    E = electric field strength in V/m, ---10((dBμV/m)/20)/106 ,
    d = measurement distance in meters (m)---3m,
    So pt = (E x d)2/30 / gt


    The worst case (refer to report CQASZ20190600444E-01) is below:


                                        Antenna polarization: Horizontal
           Frequency (MHz)                            Level (dBuV/m)                  Polarization
                   315                                         73.14                     Peak
                   315                                         58.53                    Average


                                         Antenna polarization: Vertical
           Frequency (MHz)                           Level (dBuV/m)                   Polarization
                   315                                         69.14                     Peak
                   315                                         54.53                    Average


    For 315MHz wireless:
    Field strength = 73.14dBμV/m @3m
    Ant. gain -0.36dBi; so Ant numeric gain=0.92
    So pt={[10(73.14/20)/106x3]2/30 /0.92}x1000mW =0.007mW
    So (0.007mW/5mm)x √0.315GHz = 0.0008,


    0.0008<3.0 for 1-g SAR


    So the SAR report is not required.




                                            Page:6 of 6



Document Created: 2019-09-23 15:52:56
Document Modified: 2019-09-23 15:52:56

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