MPE

FCC ID: 2AC7Z-ESP32WROOM32U

RF Exposure Info

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FCCID_3717264

                            MP
                             PE TE
                                 EST REPO
                                     R ORT


        A
        Applicant
                t            ESP
                               PRESSIF SYSTEM
                                            MS (SHANGHAI) P
                                                          PTE LTD
                                                                D

        FC
         CC ID               2AC
                               C7Z-ESP3
                                      32WROO
                                           OM32U

        Product              Wi-F
                                Fi & Bluettooth Inte
                                                   ernet of Things
                                                            T      Mo
                                                                    odule

        Brand                WRO
                               OOM

        M
        Model                ESP
                               P32-WRO
                                     OOM-32U
                                           U

        R
        Report No
                o.           RXA
                               A1710-03
                                      354MPE01

        Is
         ssue Date
                 e           Janu
                                uary 2, 20
                                         018


TA Techno
        ology (Shangh
                    hai) Co., Ltd. tested the ab
                                               bove equipme
                                                          ent in accorda
                                                                       ance with the
                                                                                   e requirementts in FCC
        art 1 1.1310. The test resu
47 CFR Pa                         ults show thatt the equipme
                                                            ent tested is capable
                                                                          c       of demonstrating compliance
                                                                                                   c
with the req
           quirements as documente
                                 ed in this repo
                                               ort.




                  Perfo
                      ormed by: Jia
                                  angpeng Lan                     Approvved by: Kai Xu
                                                                                     u




               TA Techn
                  T    ology
                           y (Shan
                                 nghai)) Co., L
                                              Ltd.
                  No.145, Jintang Rd,
                                  R Tangzhen Industry Park, Pudong Shanghai, C
                                                                             China
                                              86-021-50791
                                        TEL: +8          1141/2/3
                                     FAX: +86-0
                                              021-5079114
                                                        41/2/3-8000


           MP
            PE Test Reportt                                                                                 Report N
                                                                                                                   No: RXA1710-0
                                                                                                                               0354MPE01




                                                       Table
                                                           e of Contents
1  Test Laboratory
        L            ................................................................................................................................. 3
 1.1    N
        Notes  of the Test Reporrt ........................................................................................................... 3
 1.2    T
        Test facility ................................................................................................................................ 3
 1.3    T
        Testing Loca  ation ........................................................................................................................ 4
 1.4    L
        Laboratory    E
                      Environment        t ............................................................................................................ 4
2 Description of Eq   quipment under Test ................................................................................................ 5
3 Maxim mum conduccted output power (mea                   asured) and antenna Ga                ain ................................................. 6




TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 2 of 9
This report sh
             hall not be reprroduced exceptt in full, withoutt the written ap
                                                                            pproval of TA Teechnology (Shan
                                                                                                          nghai) Co., Ltd.


          MP
           PE Test Reportt                                                                     Report N
                                                                                                      No: RXA1710-0
                                                                                                                  0354MPE01




1 Testt Labora
             atory

1.1 Nottes of the Test Repo
                          ort

This reporrt shall not be
                       b reproduce
                                 ed in full or partial,
                                               p        witho
                                                            out the writte
                                                                         en approval of TA techn
                                                                                               nology

(shangha
       ai) co., Ltd.T
                    The results documented
                                d        d in this repo
                                                      ort apply only to the testted sample, under the

conditionss and modess of operatio           bed herein .Measureme
                                 on as describ                   ent Uncertainties were not
                                                                                        n taken

into accou
         unt and are published
                     p         fo
                                or informatio
                                            onal purpose
                                                       es only. This report is wrritten to supp
                                                                                              port

regulatoryy compliance
                     e of the applicable stand
                                             dards stated
                                                        d above.


1.2 Tes
      st facility

CNAS (ac
       ccreditation
                  n number:L2264)
TA Technology (Shan nghai) Co., Ltd.
                                L has obta ained the ac
                                                      ccreditation of
                                                                   o China Na
                                                                            ational Accre
                                                                                        editation
Service fo
         or Conformityy Assessmeent (CNAS).
FCC (Des
       signation nu
                  umber: CN1
                           1179, Test Firm
                                      F    Registtration Num
                                                           mber: 44662
                                                                     26)
TA Techno  ology (Shanghai) Co., Ltd. has been    n listed on th
                                                               he US Federal Communnications Co
                                                                                              ommission
list of test facilities reccognized to perform electromagnetiic emissionss measurem
                                                                                  ments.
IC (recognition number is 8510
                             0A)
        ology (Shanghai) Co., Ltd.
TA Techno                     L has been
                                       n listed by in
                                                    ndustry Canada to perfo
                                                                          orm electrom
                                                                                     magnetic
emission measureme
         m        ent.
VCCI (rec          umber is C--4595, T-2154, R-4113, G-10766)
        cognition nu
TA Techno
        ology (Shanghai) Co., Ltd.
                              L has been
                                       n listed by in
                                                    ndustry Japa
                                                               an to perform
                                                                           m electroma
                                                                                     agnetic
emission measureme
         m        ent.
A2LA (Ce
       ertificate Nu
                   umber: 3857
                             7.01)
TA Technoology (Shanghai) Co., Ltd.
                                 L has been n listed by American
                                                        A        Association forr Laboratory
                                                                                           y
Accreditattion to perform electrom
                                 magnetic emission meas surement.




TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 3 of 9
This report sh
             hall not be reprroduced exceptt in full, withoutt the written ap
                                                                            pproval of TA Teechnology (Shan
                                                                                                          nghai) Co., Ltd.


           MP
            PE Test Reportt                                                                    Report N
                                                                                                      No: RXA1710-0
                                                                                                                  0354MPE01


1.3 Tes
      sting Loca
               ation


   Compa
       any:              TA
                          A Technology (Shanghai) Co., Ltd.

   Address:               o.145, Jintang Rd, Tang
                         No                     gzhen Indus
                                                          stry Park, Pu
                                                                      udong Shang
                                                                                ghai, China

   City:                 Sh
                          hanghai

   Post co
         ode:            20
                          01201
   Countryy:             P. R. China

   Contact:              Xu
                          u Kai

   Telepho
         one:            +8
                          86-021-5079
                                    91141/2/3

   Fax:                  +8
                          86-021-5079
                                    91141/2/3-8000
   Website
         e:              htttp://www.ta--shanghai.co
                                                   om

   E-mail:               xu
                          ukai@ta-sha
                                    anghai.com




1.4 Lab
      boratory Environme
               E       ent

   Temperrature                                                       8C, Max. = 25 C
                                                              Min. = 18

   Relative
          e humidity                                          Min. = 30
                                                                      0%, Max. = 70%

   Ground
        d system ressistance                                  < 0.5 
   Ambiennt noise is ch
                      hecked and found very low and in compliance
                                                         c          w requirem
                                                                    with        ment of stan
                                                                                           ndards.
   Reflection of surrou
                      unding objeccts is minimized and in compliance with require
                                                                                ement of sta
                                                                                           andards.




TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 4 of 9
This report sh
             hall not be reprroduced exceptt in full, withoutt the written ap
                                                                            pproval of TA Teechnology (Shan
                                                                                                          nghai) Co., Ltd.


          MP
           PE Test Reportt                                                                     Report N
                                                                                                      No: RXA1710-0
                                                                                                                  0354MPE01



2 Des
    scription of Equip
                     pment un
                            nder Tes
                                   st

 Client In
         nformation
   Applica
         ant                                ESPRESSIF SYSTEM
                                                           MS (SHANGH
                                                                    HAI) PTE LT
                                                                              TD
                                            Room204,BBuilding2,69
                                                                90Bibo Road
                                                                          d,Zhangjiang
                                                                                     g Hi-Teck Pa
                                                                                                ark,
   Applica
         ant address
                   s
                                            Shanghai,C
                                                     China
   Manufa
        acturer                             ESPRESSIF SYSTEM
                                                           MS (SHANGH
                                                                    HAI) PTE LT
                                                                              TD
                                            Room204,BBuilding2,69
                                                                90Bibo Road
                                                                          d,Zhangjiang
                                                                                     g Hi-Teck Pa
                                                                                                ark,
   Manufa
        acturer add
                  dress
                                            Shanghai,C
                                                     China


General Technologie
        T         es
   Model                        ESP32-W
                                      WROOM-32
                                             2U
   Hardwa
        are Version
                  n             V2.1
   Softwa
        are Version             V1.0
   Date off Testing:            Novemb
                                     ber 9, 2017~
                                                ~ December 11, 2017




TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 5 of 9
This report sh
             hall not be reprroduced exceptt in full, withoutt the written ap
                                                                            pproval of TA Teechnology (Shan
                                                                                                          nghai) Co., Ltd.


          MP
           PE Test Reportt                                                                     Report N
                                                                                                      No: RXA1710-0
                                                                                                                  0354MPE01



3 Max
    ximum co
           onducted
                  d outputt power (measure
                                  (      ed) and a
                                                 antenna Gain

the numerric gain (G) of the anten
                                 nna with a ga
                                             ain specified
                                                         d in dB is de
                                                                     etermined byy
Numeric gain
        g     (G)=10^^(antenna gain/10)


                                       Ma
                                        aximum Con
                                                 nducted Outp
                                                            put Power                     Antenna GGain          Num
                                                                                                                   meric gain
              Band                                                                                                  (dB)
                                              (dBm)                    (m
                                                                        mW)                   (dBi)

           W
           Wi-Fi 2.4G                         15.90                   38
                                                                       8.905                    2.33                  1.710
                                                                                                                      1

                BT                             2.79                    1.901                    2.33                  1.710
                                                                                                                      1

  Bluetooth (Low Ene
                   ergy)                       1.08                    1.282                    2.33                  1.710
                                                                                                                      1




TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 6 of 9
This report sh
             hall not be reprroduced exceptt in full, withoutt the written ap
                                                                            pproval of TA Teechnology (Shan
                                                                                                          nghai) Co., Ltd.


               MP
                PE Test Reportt                                                                     Report N
                                                                                                           No: RXA1710-0
                                                                                                                       0354MPE01

          According to section 1.1310 of
                                      o FCC 47 CFR
                                               C   Part 1, limits for ma
                                                                       aximum perm
                                                                                 missible exp
                                                                                            posure

          (MPE)) are as follo
                            owing




Note
   e1. Occupattional/contro
                          olled limits apply in situa
                                                    ations in whic
                                                                 ch persons are exposed
                                                                                      d as a conse
                                                                                                 equence of

       their em
              mployment provided thosse persons are
                                                a fully awa
                                                          are of the po
                                                                      otential for e
                                                                                   exposure and can

       exercise
              e control ove
                          er their expo
                                      osure. Limitss for occupa
                                                              ational/contro
                                                                           olled exposu
                                                                                      ure also app
                                                                                                 ply in

       situation
               ns when an individual iss transient th
                                                    hrough a location where occupational / controlle
                                                                                                   ed limits app
                                                                                                               ply

       provided
              d he or she is made aware of the po
                                                otential for exposure.
                                                             e

Note
   e2: General population/uncontrolled
                                     d exposuress apply in situations in which
                                                                         w     the gen
                                                                                     neral public may be

             d, or in whicch persons th
       exposed                        hat are expo
                                                 osed as a co
                                                            onsequence of their emp
                                                                                  ployment ma
                                                                                            ay not be fullly

       aware of
             o the potenttial for expossure or can not exercise
                                                              e control ove
                                                                          er their expo
                                                                                      osure.




     TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 7 of 9
     This report sh
                  hall not be reprroduced exceptt in full, withoutt the written ap
                                                                                 pproval of TA Teechnology (Shan
                                                                                                               nghai) Co., Ltd.


           MP
            PE Test Reportt                                                                     Report N
                                                                                                       No: RXA1710-0
                                                                                                                   0354MPE01
    The ma
         aximum perm
                   missible exp
                              posure for 15
                                          500~100,000MHz is 1.0
                                                              0.So



                          Ba
                           and                                      The maximum permissible
                                                                                p         e exposure


                      Wi-Fi 2.4G                                                        0mW/cm2
                                                                                      1.0
                           B
                           BT                                                           0mW/cm2
                                                                                      1.0
              Bluetooth (Low Energyy)                                                   0mW/cm2
                                                                                      1.0



 IMPORTA
       ANT NOTE: To comply with
                           w the FCC
                                   C RF exposure compliance requirem
                                                                   ments, the

antenna(s) used for this transmitte
                                  er must be in
                                              nstalled to prrovide a sep
                                                                       paration dista
                                                                                    ance of at le
                                                                                                east 20

                     nd must not be
cm from all persons an           b co-locate
                                           ed or operating in conjun
                                                                   nction with a
                                                                               any other an
                                                                                          ntenna

or transmittter. No chan
                       nge to the an
                                   ntenna or the device is permitted.
                                                           p          A change tto the antenna or
                                                                      Any

the device could
           c     result in the devicce exceeding
                                               g the RF exp
                                                          posure requ
                                                                    uirements an
                                                                               nd void userr’s

authority to
           o operate the
                       e device.




 TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 8 of 9
 This report sh
              hall not be reprroduced exceptt in full, withoutt the written ap
                                                                             pproval of TA Teechnology (Shan
                                                                                                           nghai) Co., Ltd.


            MP
             PE Test Reportt                                                                     Report N
                                                                                                        No: RXA1710-0
                                                                                                                    0354MPE01




R Exposure
RF       e Calculatio
                    ons:
 T followin
 The      ng informatio
                      on provides the minimum
                                            m separation
                                                       n distance fo
                                                                   or the highe
                                                                              est gain ante
                                                                                          enna

 provided. Th
            his calculatio
                         on is based on the cond
                                               ducted powe
                                                         er, considering maximum
                                                                               m power and
                                                                                         d antenna

 g
 gain. The fo
            ormula show
                      wn in KDB 44
                                 47498 D01 is used in the calculation
                                                                    n.

E
Equation from KDB 447498 D01 Ge
                              eneral RF Exxposure Guidance v06 (10/23/2015
                                                                         5) is:
                                                                           2
                                                          S= PG / 4∏R
                                                                    R
                                                                                2
 Where:                ensity (in app
            S = power de            propriate units, e.g. mW
                                                           W/cm )

            P = Time-average maximum tune up procedure (in
                                                       ( appropria
                                                                 ate units, e.g
                                                                              g., mW)

                       eric gain of th
            G = the nume             he antenna

            R = distance to
                         t the cente
                                   er of radiation of the ante
                                                             enna (20 cm
                                                                       m = limit for M
                                                                                     MPE)



                                                                      Tes
                                                                        st Result           Limit Valu
                                                                                                     ue             The
                                                                                                                      e MPE
                    Band                          PG (mW
                                                       W)                           2                    2
                                                                       (mW/cm )              (mW/cm )                 ra
                                                                                                                       atio
                Wi-Fi 2.4G
                         G                          66.527
                                                         7                0.0132
                                                                          0                       1.0                 0.0
                                                                                                                        0132
                      BT                             3.251                0.0006
                                                                          0                       1.0                 0.0
                                                                                                                        0006
        Bluettooth (Low Energy)
                        E                            2.193
                                                         3                0.0004
                                                                          0                       1.0                 0.0
                                                                                                                        0004
    Note: R = 20 cm ∏=
                     ∏ 3.1416
        The MPE ratio = Mac Test Result÷Lim
                                 R        mit Value


  So the sim
           multaneous transmitting
                      t            antenna pa
                                            airs as below
                                                        w:
  ∑of MPE ratios=WiFi 2.4G + BT =0.0132+0.0
                                  =         0006=0.014 <1

 Note: For transmitters,
            t            , minimum separation distance is
                                                        s 20cm, eve
                                                                  en if calcula
                                                                              ations indic
                                                                                         cate MPE
       distance is less.




  TA Techno   ology (Shang    ghai) Co., Lttd.                                                                            Paage 9 of 9
  This report sh
               hall not be reprroduced exceptt in full, withoutt the written ap
                                                                              pproval of TA Teechnology (Shan
                                                                                                            nghai) Co., Ltd.



Document Created: 2018-01-02 18:12:02
Document Modified: 2018-01-02 18:12:02

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