SAR Report

FCC ID: 2AK6W-WT-3003

RF Exposure Info

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                SAR Report
 EUT Name: WT-3003
EUT Model: WT-3003
    FCC ID: 2AK6W-WT-3003




Prepared for:
                Intel Corporation
                2200 Mission College Blvd.
                Santa Clara CA 95054
                USA

Prepared by:
                TÜV Rheinland of North America
                5015 Brandin Court
                Fremont, CA 94538
                Tel: (929) 249-9123
                Fax: (925) 249-9124
                http://www.tuv.com/



      Report/Issue Date: March 28, 2019
        Report Number: 31951457.001
           Job Number: 165093


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124




                                                       TABLE OF CONTENTS


1     EXECUTIVE SUMMARY................................................................................................................. 5
    1.1     SCOPE ............................................................................................................................................ 5
    1.2     PURPOSE ........................................................................................................................................ 5
    1.3     SUMMARY OF TEST RESULTS ........................................................................................................ 5
    1.4     EQUIPMENT MODIFICATIONS ........................................................................................................ 5
    1.5     DEVIATIONS FROM THE SPECIFICATIONS ...................................................................................... 5
2     LABORATORY INFORMATION ................................................................................................... 6
    2.1     ACCREDITATIONS & ENDORSEMENTS .......................................................................................... 6
    2.2     TEST FACILITIES ............................................................................................................................ 6
3     PRODUCT INFORMATION ............................................................................................................ 7
    3.1     PRODUCT DESCRIPTION ................................................................................................................ 7
    3.2     EQUIPMENT UNDER TEST (EUT) .................................................................................................. 7
    3.3     AIR INTERFACES............................................................................................................................ 7
    3.4     ANTENNA INFORMATION .............................................................................................................. 8
    3.5     SIMULTANEOUS TRANSMISSION CONFIGURATIONS ..................................................................... 8
    3.6     EQUIPMENT CONFIGURATION ....................................................................................................... 8
    3.7     DESCRIPTION OF SAMPLE USED FOR TESTING .............................................................................. 8
    3.8     DESCRIPTION OF SAMPLE ACCESSORIES USED FOR TESTING ....................................................... 8
    3.9     SUPPORT EQUIPMENT USED FOR TESTING .................................................................................... 8
4     SAR MEASUREMENT INFORMATION ....................................................................................... 9
    4.1     TEST SPECIFICATIONS ................................................................................................................... 9
    4.2     SAR LIMIT .................................................................................................................................... 9
    4.3     ENVIRONMENTAL CONDITIONS..................................................................................................... 9
    4.4     DEVICE TEST POSITIONS ............................................................................................................... 9
    4.5     SPEAG DASY5 MEASUREMENT SYSTEM .................................................................................. 12
    4.6     SAR SCALING (REPORTED SAR) ................................................................................................ 19
5     CONDUCTED OUTPUT POWER MEASUREMENTS .............................................................. 20
    5.1     WLAN......................................................................................................................................... 20
6     SAR MEASUREMENT RESULTS ................................................................................................ 22
    6.1     SAR EVALUATION EXCLUSIONS ................................................................................................. 22
    6.2     LIQUID MEASUREMENTS ............................................................................................................. 22
    6.3     SYSTEM CHECK ........................................................................................................................... 23
    6.4     TEST CONFIGURATIONS .............................................................................................................. 23
    6.5     BODY SAR RESULTS ................................................................................................................... 23
    6.6     MEASUREMENT VARIABILITY ..................................................................................................... 24
    6.7     SAR ESTIMATION........................................................................................................................ 24
7     TEST EQUIPMENT LIST ............................................................................................................... 25



Report Number: 31951457.001                                                                                                                     Page 2 of 26
EUT: WT-3003 Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124



8    REVISION HISTORY ..................................................................................................................... 26

APPENDIX A: PLOTS
APPENDIX B: PHOTOS
APPENDIX C: CALIBRATION CERTIFICATES




Report Number: 31951457.001                                                                                                     Page 3 of 26
EUT: WT-3003 Model: WT-3003
Report Date: March 28, 2019


                                 Statement of Compliance
 Manufacturer:                   Intel Corporation
                                 2200 Mission College Blvd.
                                 Santa Clara CA 95054
                                 USA
 Name of Equipment:              WT-3003
 Model Number:                   WT-3003
 FCC ID:                         2AK6W-WT-3003
 Test Dates:                     March 12-15, 2019


Guidance Documents:
        FCC Code of Federal Regulations Title 47, Various FCC KDBs
Test Methods:
        IEEE 1528-2013, Various FCC KDBs


The RF exposure test and documented data described in this report has been performed and recorded by
TÜV Rheinland, in accordance with the standards and procedures listed herein. As the responsible
authorized agent of the EMC laboratory, I hereby declare that the equipment described above has been
shown to be compliant with the RF exposure requirements of the stated regulations and standards based
on these results. If any special accessories and/or modifications were required for compliance, they are
listed in this report.
This report must not be used to claim product endorsement by A2LA or any agency of the U.S.
Government. This report shall not be reproduced except in full, without the written authorization of TÜV
Rheinland of North America.




 Josie Sabado             March 28, 2019                  Jeremy Luong              March 28, 2019
 Test Engineer            Date                            Laboratory Signatory      Date




                                           Test Cert. # 3331.02


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124



1 Executive Summary

1.1    Scope
This report is intended to document the status of conformance with the applicable RF exposure
requirements based on the results of testing performed on March 12-15, 2019 on the WT-3003 model
WT-3003 manufactured by Intel Corporation This report only applies to the specific samples tested under
the stated test conditions. It is the responsibility of the manufacturer to assure that production units of this
model are manufactured with identical or equivalent electrical and mechanical components. This report is
further intended to document changes and modifications to the EUT throughout its life cycle. All
documentation will be included as a supplement.

1.2    Purpose
Testing was performed to evaluate the SAR levels of the EUT in accordance with the applicable
requirements, procedures, and criteria defined in the application of regulations and application of standards
listed in this report.

1.3    Summary of Test Results
                                                          Maximum Reported
      Equipment Class            Exposure Condition        1g SAR (W/kg)                      Result
 DTS                            Body                     0.318                       Complies
 DSS                     Body                      0.336                   Complies
 Note:
 DSS reported SAR value is estimated according to KDB 447498 section 4.3.2

1.4    Equipment Modifications
No modifications were found to be necessary in order to achieve compliance.

1.5    Deviations from the Specifications
None




Report Number: 31951457.001                                                                          Page 5 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


2 Laboratory Information

2.1     Accreditations & Endorsements

2.1.1    NIST / A2LA
                           TUV Rheinland of North America is accredited by the National Voluntary
                           Laboratory Accreditation Program, which is administered under the auspices of
                           the National Institute of Standards and Technology. The laboratory has been
                           assessed and accredited in accordance with ISO Guide 17025:2005. The scope
                           of laboratory accreditation includes emission and immunity testing. The
accreditation is updated every 2 years.
2.1.2    US Federal Communications Commission
                TUV Rheinland of North America at 5015 Brandin Court, Fremont, CA 94538, is
                accredited by the commission for performing testing services for the general public on a
                fee basis. These laboratory test facilities have been fully described in reports submitted to
and accepted by the FCC. The laboratory scope of accreditation includes: Title 47 CFR Parts 15, 18, 22,
24, 27, and 90. The accreditation is updated every 2 years.

2.1.3    Canada – Industry Canada
                                               TUV Rheinland of North America at the 5015 Brandin Court,
                                               Fremont, CA 94538 address is accredited by Industry Canada
                                               for performing testing services for the general public on a fee
basis. This laboratory test facility has been fully described in reports submitted to and accepted by
Industry Canada (File Number 2932D). The accreditation is updated every 3 years.

2.1.4    Acceptance by Mutual Recognition Arrangement
                         The United States has an established agreement with specific countries under the
                         Asia Pacific Laboratory Accreditation Corporation (APLAC) Mutual Recognition
                         Arrangement. Under this agreement, all TUV Rheinland at 5015 Brandin Court,
                         Fremont, CA 94538 test results and test reports within the scope of the laboratory
                         NIST / A2LA accreditation will be accepted by each member country.

2.2     Test Facilities
All of the test facilities are located at 1279 Quarry Lane, Ste. A, Pleasanton, California 94566, USA. The
5015 Brandin Court, Fremont, CA 94538, USA location is considered a Pleasanton annex.




Report Number: 31951457.001                                                                        Page 6 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


        TÜV Rheinland of North America
   5015 Brandin Court, Fremont, CA 94538
   Tel: (925) 249-9123, Fax: (925) 249-9124


   3 Product Information

   3.1    Product Description
   Wifi Tag for theme park tracking

   3.2    Equipment Under Test (EUT)
                                                    EUT Specification
 EUT Dimensions                           55.4 x 34.8 x 16.4 mm
 Power Input
                                          3.3 VDC battery, 5 VDC USB
 Exposure Type                            ☒ General Population / Uncontrolled
                                          ☐ Occupational / Controlled
 Exposure Condition                       ☐ Next to the Ear
                                          ☐ Head Worn
                                          ☒ Body Worn
                                          ☒ Next to the Body
                                          ☐ Limb
                                          ☐ Personal Wireless Router (Hotspot)
 Hardware Version                         Gen 3
 Software Version                         1.0
 Power Reduction Modes                    None



   3.3    Air Interfaces
                                                                                                   Maximum
                                                                                                    Output
                                                                                                     Power
                                                                                  Frequency        Including
                      Supported                             Maximum                 Range          Tolerance
Air Interface         Capabilities             Modulation   Duty Cycle    Band      (MHz)            (dBm)
                                               BPSK
                  b/g mode
  WLAN:                                        QPSK
                  n mode, HT20,                              100%        N/A    2400 – 2483.5          17
802.11 b/g/n                                   16QAM
                   HT40
                                               64QAM
                  Basic Data Rate                            BDR /
                                               GFSK
                  Enhanced Data                              EDR:
 Bluetooth                                     π/4 DQPSK                 N/A    2400 – 2483.5           8
                   Rate                                       57.7%
                                               8DPSK
                  Low Energy                                LE: 81%




   Report Number: 31951457.001                                                                   Page 7 of 26
   EUT: WT-3003 | Model: WT-3003
   Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


3.4    Antenna Information
                               Internal /                       Frequency Range            Antenna Gain
       Antenna                 External        Antenna Type          (MHz)                     (dBi)
       2.4 GHz                  Internal           PCB            2400 – 2483.5                  2

3.5    Simultaneous Transmission Configurations
No simultaneous transmission configurations.

3.6    Equipment Configuration
Test software was used to control the radio’s modulation, data rate, channel, and power.

3.7    Description of Sample used for Testing
           Device                   Serial Number         Configuration              Used For
 Tracker                        Unit #1               Radiated                  SAR Testing
 Tracker                        Unit #2               Conducted                 Conducted Power

3.8    Description of Sample Accessories used for Testing
No accessories were used for testing.

3.9    Support Equipment used for Testing
           Device                Serial Number            Configuration               Used For
  USB cable/power adapter              N/A                    Power                 SAR Testing
 Note: Support equipment is used for testing purposes only. The user manual of the EUT should be
 consulted to determine if the support equipment is used under normal operating conditions.




Report Number: 31951457.001                                                                      Page 8 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


       TÜV Rheinland of North America
  5015 Brandin Court, Fremont, CA 94538
  Tel: (925) 249-9123, Fax: (925) 249-9124


  4 SAR Measurement Information

  4.1    Test Specifications
  The following specifications were used during the course of testing and are referenced in this test report.
Specification Number                                     Title                                        Version
                            IEEE Recommended Practice for Determining the Peak Spatial-
                           Average Specific Absorption Rate (SAR) in the Human Head from
      IEEE 1528                                                                                         2013
                                          Wireless Communications Devices:
                                              Measurement Techniques
                           RF Exposure Procedures and Equipment Authorization Policies for
FCC KDB 447498, D01                                                                                     v06
                                             Mobile and Portable Devices
FCC KDB 865664, D01            SAR Measurement Requirements for 100 MHz to 6 GHz                       v01r04
FCC KDB 248227, D01              SAR Guidance for IEEE 802.11 (Wi-Fi) Transmitters                     v02r02

  4.2    SAR Limit
  The following SAR limits have been applied in this test report to evaluate the compliance of the EUT
  against regulatory requirements.
                                                                  Limit               Average Mass
            Reference             Exposure Condition             (W/kg)                     (g)
    FCC §1.1310 & §2.1093           Head and Trunk                 1.6                       1

  4.3    Environmental Conditions
  The ambient and liquid temperature is measured throughout the course of SAR measurements and is
  maintained between 18 °C to 25 °C. The temperature drift of the liquid is ≤ 2 °C

  4.4    Device Test Positions
  Head Positions
  Reference lines are drawn on the handset to accurately position the handset against the SAM phantom. The
  vertical center line bisects the width of the handset into two equal halves. The horizontal line is
  perpendicular to the vertical center line and passes through the center of the acoustic output. The
  intersection point of the vertical center line and the horizontal line is the ear reference point. The following
  figure illustrates the position of the vertical center line and the horizontal line.




  Report Number: 31951457.001                                                                          Page 9 of 26
  EUT: WT-3003 | Model: WT-3003
  Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124




There are four head positions: right touch, right tilt, left touch, and left tilt. Left and right indicate the side
of the head.
In touch positions the handset makes contact with the head at two points. The first contact point is where
the ear reference point of the handset makes contact with the ear pinna of the SAM phantom. The second
contact point is where the handset makes contact with the cheek of the SAM phantom. The following figure
is an example of the left touch position.




In tilt positions the handset is tilted at a 15° angle from the ear. The top edge of the handset makes contact
with the SAM phantom. The ear reference point of the handset is centered on the ear pinna of the SAM
phantom. The following figure is an example of the left tilt position.




Report Number: 31951457.001                                                                           Page 10 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124




Body Positions
Body SAR measurements are done for the surfaces of the EUT that would face the user during normal
operation. The center of the EUT surface is centered on the surface of the flat phantom. If applicable, a
separation distance specified by the manufacturer is used between the EUT and the phantom.
For EUTs that do not fit completely within the measurement area of the phantom, pretest measurements
are done to find the hot spot. Once the hot spot is found, the EUT is placed so that the hot spot is at the
center of the flat phantom.




Report Number: 31951457.001                                                                       Page 11 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.5     SPEAG DASY5 Measurement System

4.5.1    System Overview




      The SPEAG DASY5 measurement system consists of the following items:

     A standard high precision 6-axis robot (Stäubli TX/RX family) with controller, teach pendant and
      software. An arm extension for accommodating the data acquisition electronics (DAE).
     An isotropic field probe optimized and calibrated for the targeted measurement.
     A data acquisition electronics (DAE) which performs the signal amplification, signal multiplexing,
      AD-conversion, offset measurements, mechanical surface detection, collision detection, etc. The unit
      is battery powered with standard or rechargeable batteries. The signal is optically transmitted to the
      EOC.
     The Electro-optical converter (EOC) performs the conversion from optical to electrical signals for the
      digital communication to the DAE. To use optical surface detection, a special version of the EOC is
      required. The EOC signal is transmitted to the measurement server.
     The function of the measurement server is to perform the time critical tasks such as signal filtering,
      control of the robot operation and fast movement interrupts.
     The Light Beam used is for probe alignment. This improves the (absolute) accuracy of the probe
      positioning.
     A computer running Win7 professional operating system and the DASY5 software.
     Remote control and teach pendant as well as additional circuitry for robot safety such as warning
      lamps, etc.
     The phantom, the device holder and other accessories according to the targeted measurement.

4.5.2    Robot
The Stäubli TX60L robot is a high precision, high reliability industrial robot. The placement precision
repeatability is within ±0.02 mm. It uses a brushless synchronous motor with low ELF interference. The
robot is controlled by the Stäubli CS8c robot controller.


Report Number: 31951457.001                                                                     Page 12 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.5.3    Data Acquisition Electronics
The data acquisition electronics consist of a highly sensitive electrometer-grade preamplifier with
auto-zeroing, a channel and gain-switching multiplexer, a fast 16 bit AD-converter and a command decoder
with a control logic unit. Transmission to the measurement server is accomplished through an optical
downlink for data and status information, as well as an optical uplink for commands and the clock.
The mechanical probe mounting device includes two different sensor systems for frontal and sideways
probe contacts. They are used for mechanical surface detection and probe collision detection.
The input impedance of both the DAE4 as well as of the DAE3 box is 200MOhm; the inputs are
symmetrical and floating. Common mode rejection is above 80 dB.
4.5.4    Probe
The EX3DV4 dosimetric SAR probe are specially designed and calibrated for use in liquids with high
permittivities. The enclosure of the probe is made of PEEK material. The probe is calibrated by SPEAG
according to ISO/IEC 17025. See the appendix for the probe calibration report including specifications of
probe parameters.
4.5.5    Phantoms
The SAM twin phantom is a fiberglass shell phantom with 2 mm ± 0.2 mm shell thickness (except the ear
region, where shell thickness increases to 6 mm ± 0.2 mm). The phantom has three measurement areas:
      Left hand
      Right hand
      Flat phantom
The shape of the left hand and right hand phantoms are according to IEEE 1528 and IEC 62209-1. The
relative permittivity of the shell is 3.5 ± 0.5. The loss tangent is ≤ 0.05.
The ELI phantom is intended for compliance testing of handheld and body-mounted wireless devices. It is
fully compatible with IEC 62209-2. The flat bottom surface is an elliptical shape measuring 600 mm in
length and 400 mm in width. The shell thickness is 2 mm ± 0.2 mm. The relative permittivity is 4 ± 1 and
the loss tangent is ≤ 0.05.




Report Number: 31951457.001                                                                  Page 13 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.5.6    System Check Procedure
The purpose of the system check is to verify that a specific SAR measurement system operates within its
specifications at the device test frequencies. It is done within 24 hours before SAR measurements. The
setup for system check is as follows
                                                                                            Dipole
                                                        Directional Coupler
     Signal                                Attenuator
                        Amplifier
    Generator

                                                                Attenuator                Attenuator


                                                                  Power                    Power
                                                                  Meter 1                  Meter 2


    1. An unmodulated continuous wave signal is generated at the frequency to be tested.
    2. The power at the input to the dipole is measured using power meter 2 while the forward power at
       the directional coupler is measured using power meter 1. The output power of the signal generator
       is varied until 20 dBm is measured at power meter 2.
    3. Power meter 2 is disconnected and the dipole is connected. The output power of the signal generator
       is varied until power meter 1 measures the same forward power as when 20 dBm was measured
       with power meter 2.
    4. A SAR measurement is performed using the dipole with the same area scan and zoom scan
       parameters required for a SAR measurement on the EUT.
    5. The 1g and 10g SAR result is compared to the 1g and 10g SAR value in the dipole’s calibration
       certificate.

4.5.7    SAR Measurement Procedure
Power Reference Measurement
A single point SAR measurement is measured above the center of the radiating structure. This power
reference measurement is compared to the power drift measurement after the zoom scan to ensure the output
power of the EUT does not drift during the SAR measurement.




Report Number: 31951457.001                                                                   Page 14 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


Area Scan
The area scan is done in the x-y plane. The measurement grid is larger than the area of the EUT surface
under test with the following characteristics:
                                                          ≤ 3 GHz                      > 3 GHz
     Maximum distance from the closest
    measurement point (geometric center of             5 mm ± 1 mm             δ ∙ ln(2)/2 mm ± 0.5 mm
      probe sensors) to phantom surface
   Maximum probe angle from probe axis to
  phantom surface normal at the measurement               30° ± 1°                     20° ± 1°
                   location

                                                     ≤ 2 GHz: ≤ 15mm             3 – 4 GHz: ≤ 12 mm
                                                    2 – 3 GHz: ≤ 12 mm           4 – 6 GHz: ≤ 10 mm

     Maximum area scan spatial resolution:        When the x or y dimension of the test device, in the
               ΔxArea, ΔyArea                      measurement plane orientation, is smaller than the
                                                   above, the measurement resolution must be ≤ the
                                                 corresponding x or y dimension of the test device with
                                                   at least one measurement point on the test device.
 Note: δ is the penetration depth of a plane-wave at normal incidence to the tissue medium.
Zoom Scan
Once the hot spot is found in the area scan, a zoom scan measurement is done above the hot spot. A uniform
measurement grid is done in the x, y, and z direction in the form of a cube. The following characteristics
are used:
                                                          ≤ 3 GHz                      > 3 GHz

    Maximum zoom scan spatial resolution:            ≤ 2 GHz: ≤ 8 mm             3 – 4 GHz: ≤ 5 mm
              Δxzoom, Δyzoom                        2 – 3 GHz: ≤ 5 mm            4 – 6 GHz: ≤ 4 mm

                                                                                 3 – 4 GHz: ≤ 4 mm
    Maximum zoom scan spatial resolution,
                                                          ≤ 5 mm                 4 – 5 GHz: ≤ 3 mm
      normal to phantom surface: Δzzoom
                                                                                 5 – 6 GHz: ≤ 2 mm
                                                                                 3 – 4 GHz: ≥ 28 mm
      Minimum zoom scan volume: x, y, z                  ≥ 30 mm                 4 – 5 GHz: ≥ 25 mm
                                                                                 5 – 6 GHz: ≥ 22 mm
Power Drift Measurement
A second single point SAR measurement is done at the same location as the power reference measurement.
The delta between the power reference measurement and the power drift measurement shall not be more
than ± 5%




Report Number: 31951457.001                                                                   Page 15 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.5.8      Measurement Uncertainty

4.5.8.1 IEEE 1528-2013, 300 MHz - 3 GHz
                                                                                              Std.       Std.
                                        Uncertainty   Probability              (ci)   (ci)    Unc.      Unc.     (vi)
           Error Description              Value       Distribution   Divisor   1g     10g     (1g)      (10g)    veff
 Measurement System
            Probe Calibration              ± 6.0%          N           1        1      1     ± 6.0%    ± 6.0%    ∞
             Axial Isotropy                ± 4.7%          R           √3      0.7    0.7    ± 1.9%    ± 1.9%    ∞
         Hemispherical Isotropy            ± 9.6%          R           √3      0.7    0.7    ± 3.9%    ± 3.9%    ∞
            Boundary Effects               ± 1.0%          R           √3       1      1     ± 0.6%    ± 0.6%    ∞
                Linearity                  ± 4.7%          R           √3       1      1     ± 2.7%    ± 2.7%    ∞
        System Detection Limits            ± 1.0%          R           √3       1      1     ± 0.6%    ± 0.6%    ∞
          Modulation Response              ± 2.4%          R           √3       1      1     ± 1.4%    ± 1.4%    ∞
          Readout Electronics              ± 0.3%          N           1        1      1     ± 0.3%    ± 0.3%    ∞
             Response Time                 ± 0.8%          R           √3       1      1     ± 0.5%    ± 0.5%    ∞
            Integration Time               ± 2.6%          R           √3       1      1     ± 1.5%    ± 1.5%    ∞
           RF Ambient Noise                ± 3.0%          R           √3       1      1     ± 1.7%    ± 1.7%    ∞
        RF Ambient Reflections             ± 3.0%          R           √3       1      1     ± 1.7%    ± 1.7%    ∞
            Probe Positioner               ± 0.4%          R           √3       1      1     ± 0.2%    ± 0.2%    ∞
            Probe Positioning              ± 2.9%          R           √3       1      1     ± 1.7%    ± 1.7%    ∞
          Max. SAR Evaluation              ± 2.0%          R           √3       1      1     ± 1.2%    ± 1.2%    ∞
 Test Sample Related
           Device Positioning              ± 2.9%          N           1        1      1     ± 2.9%    ± 2.9%    145
             Device Holder                 ± 3.6%          N           1        1      1     ± 3.6%    ± 3.6%     5
              Power Drift                  ± 5.0%          R           √3       1      1     ± 2.9%    ± 2.9%    ∞
             Power Scaling                 ± 0%            R           √3       1      1     ± 0.0%    ± 0.0%    ∞
 Phantom and Setup
          Phantom Uncertainty              ± 6.1%          R           √3       1      1     ± 3.5%    ± 3.5%    ∞
             SAR correction                ± 1.9%          R           √3       1     0.84   ± 1.1%    ± 0.9%    ∞
    Liquid Conductivity (mea.)DAK          ± 2.5%          R           √3      0.78   0.71   ± 1.1%    ± 1.0%    ∞
    Liquid Permittivity     (mea.)DAK      ± 2.5%          R           √3      0.26   0.26   ± 0.3%    ± 0.4%    ∞
        Temp. unc. - Conductivity          ± 3.4%          R           √3      0.78   0.71   ± 1.5%    ± 1.4%    ∞
        Temp. unc. - Permittivity          ± 0.4%          R           √3      0.23   0.26   ± 0.1%    ± 0.1%    ∞
     Combined Std. Uncertainty                                                               ± 11.2%   ± 11.1%   361
     Expanded STD Uncertainty                                                                ± 22.3%   ± 22.2%




Report Number: 31951457.001                                                                              Page 16 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.5.8.2 IEEE 1528-2013, 3 GHz – 6 GHz
                                                                                             Std.       Std.
                                       Uncertainty   Probability              (ci)   (ci)    Unc.      Unc.     (vi)
         Error Description               Value       Distribution   Divisor   1g     10g     (1g)      (10g)    veff
 Measurement System
          Probe Calibration                ± 6.55%        N           1        1      1     ± 6.55%   ± 6.55%   ∞
            Axial Isotropy                 ± 4.7%         R           √3      0.7    0.7    ± 1.9%    ± 1.9%    ∞
       Hemispherical Isotropy              ± 9.6%         R           √3      0.7    0.7    ± 3.9%    ± 3.9%    ∞
          Boundary Effects                 ± 2.0%         R           √3       1      1     ± 1.2%    ± 1.2%    ∞
              Linearity                    ± 4.7%         R           √3       1      1     ± 2.7%    ± 2.7%    ∞
       System Detection Limits             ± 1.0%         R           √3       1      1     ± 0.6%    ± 0.6%    ∞
        Modulation Response                ± 2.4%         R           √3       1      1     ± 1.4%    ± 1.4%    ∞
         Readout Electronics               ± 0.3%         N           1        1      1     ± 0.3%    ± 0.3%    ∞
           Response Time                   ± 0.8%         R           √3       1      1     ± 0.5%    ± 0.5%    ∞
          Integration Time                 ± 2.6%         R           √3       1      1     ± 1.5%    ± 1.5%    ∞
          RF Ambient Noise                 ± 3.0%         R           √3       1      1     ± 1.7%    ± 1.7%    ∞
       RF Ambient Reflections              ± 3.0%         R           √3       1      1     ± 1.7%    ± 1.7%    ∞
           Probe Positioner                ± 0.8%         R           √3       1      1     ± 0.5%    ± 0.5%    ∞
          Probe Positioning                ± 6.7%         R           √3       1      1     ± 3.9%    ± 3.9%    ∞
        Max. SAR Evaluation                ± 4.0%         R           √3       1      1     ± 2.3%    ± 2.3%    ∞
 Test Sample Related
         Device Positioning                ± 2.9%         N           1        1      1     ± 2.9%    ± 2.9%    145
            Device Holder                  ± 3.6%         N           1        1      1     ± 3.6%    ± 3.6%     5
             Power Drift                   ± 5.0%         R           √3       1      1     ± 2.9%    ± 2.9%    ∞
            Power Scaling                   ± 0%          R           √3       1      1     ± 0.0%    ± 0.0%    ∞
 Phantom and Setup
        Phantom Uncertainty                ± 6.6%         R           √3       1      1     ± 3.8%    ± 3.8%    ∞
           SAR correction                  ± 1.9%         R           √3       1     0.84   ± 1.1%    ± 0.9%    ∞
    Liquid Conductivity (mea.)DAK          ± 2.5%         R           √3      0.78   0.71   ± 1.1%    ± 1.0%    ∞
    Liquid Permittivity (mea.)DAK          ± 2.5%         R           √3      0.26   0.26   ± 0.3%    ± 0.4%    ∞
      Temp. unc. - Conductivity            ± 3.4%         R           √3      0.78   0.71   ± 1.5%    ± 1.4%    ∞
      Temp. unc. - Permittivity            ± 0.4%         R           √3      0.23   0.26   ± 0.1%    ± 0.1%    ∞
     Combined Std. Uncertainty                                                              ± 12.3%   ± 12.2%   748
     Expanded STD Uncertainty                                                               ± 24.6%   ± 24.5%




Report Number: 31951457.001                                                                             Page 17 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.5.8.3 IEC 62209-1/2, 30 MHz – 6 GHz
                                                                                             Std.       Std.
                                       Uncertainty   Probability              (ci)   (ci)    Unc.      Unc.     (vi)
         Error Description               Value       Distribution   Divisor   1g     10g     (1g)      (10g)    veff
 Measurement System
          Probe Calibration                ± 6.55%        N           1        1      1     ± 6.55%   ± 6.55%   ∞
            Axial Isotropy                 ± 4.70%        R           √3      0.7    0.7    ± 1.9%    ± 1.9%    ∞
       Hemispherical Isotropy              ± 9.60%        R           √3      0.7    0.7    ± 3.9%    ± 3.9%    ∞
          Boundary Effects                 ± 2.00%        R           √3       1      1     ± 1.2%    ± 1.2%    ∞
              Linearity                    ± 4.70%        R           √3       1      1     ± 2.7%    ± 2.7%    ∞
       System Detection Limits             ± 1.00%        R           √3       1      1     ± 0.6%    ± 0.6%    ∞
        Modulation Response                ± 2.40%        R           √3       1      1     ± 1.4%    ± 1.4%    ∞
         Readout Electronics               ± 0.30%        N           1        1      1     ± 0.3%    ± 0.3%    ∞
           Response Time                   ± 0.80%        R           √3       1      1     ± 0.5%    ± 0.5%    ∞
          Integration Time                 ± 2.60%        R           √3       1      1     ± 1.5%    ± 1.5%    ∞
          RF Ambient Noise                 ± 3.00%        R           √3       1      1     ± 1.7%    ± 1.7%    ∞
       RF Ambient Reflections              ± 3.00%        R           √3       1      1     ± 1.7%    ± 1.7%    ∞
           Probe Positioner                ± 0.80%        R           √3       1      1     ± 0.5%    ± 0.5%    ∞
          Probe Positioning                ± 6.70%        R           √3       1      1     ± 3.9%    ± 3.9%    ∞
           Post-processing                 ± 4.00%        R           √3       1      1     ± 2.3%    ± 2.3%    ∞
 Test Sample Related
         Device Positioning                ± 2.90%        N           1        1      1     ± 2.9%    ± 2.9%    145
            Device Holder                  ± 3.60%        N           1        1      1     ± 3.6%    ± 3.6%     5
             Power Drift                   ± 5.00%        R           √3       1      1     ± 2.9%    ± 2.9%    ∞
            Power Scaling                   ± 0%          R           √3       1      1     ± 0.0%    ± 0.0%    ∞
 Phantom and Setup
        Phantom Uncertainty                ± 7.90%        R           √3       1      1     ± 4.6%    ± 4.6%    ∞
           SAR correction                  ± 1.90%        R           √3       1     0.84   ± 1.1%    ± 0.9%    ∞
    Liquid Conductivity (mea.)DAK          ± 2.50%        R           √3      0.78   0.71   ± 1.1%    ± 1.0%    ∞
    Liquid Permittivity (mea.)DAK          ± 2.50%        R           √3      0.26   0.26   ± 0.4%    ± 0.4%    ∞
      Temp. unc. - Conductivity            ± 3.40%        R           √3      0.78   0.71   ± 1.5%    ± 1.4%    ∞
      Temp. unc. - Permittivity            ± 0.40%        R           √3      0.23   0.26   ± 0.1%    ± 0.1%    ∞
     Combined Std. Uncertainty                                                              ± 12.5%   ± 12.5%   748
     Expanded STD Uncertainty                                                               ± 25.1%   ± 25.0%




Report Number: 31951457.001                                                                             Page 18 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


4.6    SAR Scaling (Reported SAR)
Measured 1g and 10g SAR values are scaled up to the maximum output power including tolerance of the
EUT as declared by the manufacturer. Conducted output power measurements are performed to ensure the
output power of the EUT is close to the maximum power. After SAR measurements are performed, the
measured SAR is scaled up by the delta between the measured output power and the manufacturer’s
declared maximum output power including tolerance.


The SAR scaling factor is calculated as
                                       𝑀𝑎𝑥𝑖𝑚𝑢𝑚 𝑂𝑢𝑡𝑝𝑢𝑡 𝑃𝑜𝑤𝑒𝑟 𝐼𝑛𝑐𝑙𝑢𝑑𝑖𝑛𝑔 𝑇𝑜𝑙𝑒𝑟𝑎𝑛𝑐𝑒, 𝑚𝑊
         𝑆𝐴𝑅 𝑆𝑐𝑎𝑙𝑖𝑛𝑔 𝐹𝑎𝑐𝑡𝑜𝑟 =
                                                𝑀𝑒𝑎𝑠𝑢𝑟𝑒𝑑 𝑂𝑢𝑡𝑝𝑢𝑡 𝑃𝑜𝑤𝑒𝑟, 𝑚𝑊

The reported SAR is
         𝑅𝑒𝑝𝑜𝑟𝑡𝑒𝑑 𝑆𝐴𝑅 = 𝑀𝑒𝑎𝑠𝑢𝑟𝑒𝑑 𝑆𝐴𝑅 × 𝑆𝐴𝑅 𝑆𝑐𝑎𝑙𝑖𝑛𝑔 𝐹𝑎𝑐𝑡𝑜𝑟


For Example:
Measured SAR: 1.0 W/kg
Measured output power: 250 mW
Maximum output power including tolerance: 300 mW
SAR scaling factor = 1.2
Reported SAR = 1.2 W/kg




Report Number: 31951457.001                                                              Page 19 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


5 Conducted Output Power Measurements
Conducted output power measurements are performed to verify the EUT is transmitting at maximum output
power. The power measurements are compared to the manufacturer’s declared output power including
tolerance.
The following set up is used for conducted output power measurements

                                                                         Power
                      EUT                  Attenuator
                                                                       Meter/Sensor

The following path losses were used during conducted measurements
         Frequency                   Path Loss
           (MHz)                        (dB)                        Comments
       2400 – 2483.5                     10.1             Loss includes 10 dB attenuator

5.1      WLAN
Output power is measured using a power meter.
2.4 GHz WLAN – 802.11 b/g/n, 20 MHz Channel Bandwidth
                                         802.11b                   802.11g            802.11n, HT20
              Duty Cycle                  100%                      100%                  100%
          Measured Burst Avg. Power
      2412 MHz




                                          16.88                        14                 13.82
                    (dBm)
        Ch. 1 /




             Max Output Power
             Including Tolerance            17                         14                  14
                    (dBm)
          Measured Burst Avg. Power
      2417 MHz




                                           N/A                      16.78                 16.69
                    (dBm)
        Ch. 2 /




             Max Output Power
             Including Tolerance            17                         17                  17
                    (dBm)
          Measured Burst Avg. Power
      2437 MHz




                                          16.33                     15.76                 15.74
                    (dBm)
        Ch. 6 /




             Max Output Power
             Including Tolerance            17                         17                  17
                    (dBm)
          Measured Burst Avg. Power
      2457 MHz




                                           N/A                      16.02                 16.12
       Ch. 10 /




                    (dBm)
             Max Output Power
             Including Tolerance            17                         17                  17
                    (dBm)
          Measured Burst Avg. Power
      2462 MHz




                                          16.33                     13.40                 13.87
       Ch. 11 /




                    (dBm)
             Max Output Power
             Including Tolerance            17                         14                  14
                    (dBm)


Report Number: 31951457.001                                                                     Page 20 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


2.4 GHz WLAN – 802.11n, 40 MHz Channel Bandwidth
                                   802.11n, HT40
            Duty Cycle                  100%
        Measured Burst Avg. Power
  2422 MHz


                                        13.48
                  (dBm)
    Ch. 3 /




           Max Output Power
           Including Tolerance           14
                  (dBm)
        Measured Burst Avg. Power
  2427 MHz




                                        16.27
                  (dBm)
    Ch. 4 /




           Max Output Power
           Including Tolerance           17
                  (dBm)
        Measured Burst Avg. Power
  2437 MHz




                                        16.44
                  (dBm)
    Ch. 6 /




           Max Output Power
           Including Tolerance           17
                  (dBm)
        Measured Burst Avg. Power
  2447 MHz




                                        16.30
                  (dBm)
    Ch. 8 /




           Max Output Power
           Including Tolerance           17
                  (dBm)
        Measured Burst Avg. Power
  2452 MHz




                                        13.77
                  (dBm)
    Ch. 9 /




           Max Output Power
           Including Tolerance           14
                  (dBm)




Report Number: 31951457.001                        Page 21 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


      TÜV Rheinland of North America
 5015 Brandin Court, Fremont, CA 94538
 Tel: (925) 249-9123, Fax: (925) 249-9124


 6 SAR Measurement Results

 6.1    SAR Evaluation Exclusions
 According to FCC KDB 447498, section 4.3.1, SAR testing can be excluded for a radio when the following
 exclusion threshold is satisfied:
           𝑀𝑎𝑥. 𝑃𝑜𝑤𝑒𝑟 𝑜𝑓 𝑐ℎ𝑎𝑛𝑛𝑒𝑙, 𝑖𝑛𝑐𝑙𝑢𝑑𝑖𝑛𝑔 𝑡𝑢𝑛𝑒−𝑢𝑝 𝑡𝑜𝑙𝑒𝑟𝑎𝑛𝑐𝑒, 𝑚𝑊
                                                                    × √𝑓(𝐺𝐻𝑧) ≤ 3.0
                       𝑀𝑖𝑛.𝑇𝑒𝑠𝑡 𝑆𝑒𝑝𝑎𝑟𝑎𝑡𝑖𝑜𝑛 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒, 𝑚𝑚

 Additionally, when the minimum test separation distance is < 5 mm, the minimum test separation distance
 used in the equation above is 5 mm.
 Bluetooth
 Max power including tolerance: 6.3 mW
 Min. test separation distance: 5 mm
 Exclusion Threshold Evaluation: 1.98
 The exclusion threshold evaluation is less than 3.0. Bluetooth SAR testing is not required.

 6.2    Liquid Measurements
 Liquid measurements are within +/-10% of the target value. The DASY52 software corrects the measured
 SAR value to the target conductivity and permittivity only when the SAR value will be higher after
 correction.


                                                          Measured                        % Delta
  Liquid            Date          Frequency    Permittivity    Conductivity     Permittivity   Conductivity
                                     2410        51.2349          2.0801         -2.87836        8.80423
                                     2415        51.2251         2.08503         -2.88463        8.79043
                                     2435        51.1846         2.10474         -2.91237        8.73462
  HBBL           March 15,           2440        51.1741         2.10966         -2.92001        8.72059
600-6000V6        2019               2450        51.1529         2.11955         -2.93571        8.69463
                                     2460        51.1316         2.12949         -2.95268        8.41629
                                     2465        51.1209         2.13448         -2.96123        8.27912




 Report Number: 31951457.001                                                                   Page 22 of 26
 EUT: WT-3003 | Model: WT-3003
 Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


6.3    System Check
System check is performed within 24 hours before the SAR measurement on the EUT. A SAR measurement
is done with a calibrated reference dipole. The measured SAR is normalized to 1 W and compared to the
1 W reference SAR value provided in the calibration report for the dipole. The system check is verified to
be within ±10% of the reference SAR value.

                                              Dipole        1W                1W
                                              Input      Normalized         Reference
 Frequency        Liquid                      Power       1g SAR             1g SAR
   (MHz)           Type          Date         (mW)         (W/kg)            (W/kg)          Difference
                                March 15,
      2450        MBBL                          20           55.6               50.9           9.2%
                                 2019



6.4    Test Configurations
The following configurations were tested for SAR.
 Configuration # Exposure Condition Accessories                  Position        Distance
         B1                                                       Front           0 mm
                             Body                 None
         B2                                                       Back            0 mm
During testing, the EUT was plugged into the AC power plug to ensure the EUT does not power off during
testing.

6.5    Body SAR Results
802.11b
                                              Power    Measured        SAR        Reported
                Frequency                      Drift    1g SAR        Scaling      1g SAR
  Channel         (MHz)           Config. #    (dB)     (W/kg)        Factor       (W/kg)       Plot #
     6             2437             B1          0.16      0.237        1.17         0.277         1
     6             2437             B2          0.11     0.0115        1.17         0.013         2
     1             2412             B1          0.05      0.309        1.03         0.318         3
    11             2462             B1         -0.12      0.179        1.17         0.209         4
802.11g/n HT20/n HT40 testing is not required because the highest reported SAR for DSSS adjusted by
the ratio of OFDM to DSSS power is less than 1.2 W/kg.




Report Number: 31951457.001                                                                    Page 23 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


6.6     Measurement Variability
According to FCC KDB 865664, When the highest measured 1-g SAR within a frequency band is
< 1.5 W/kg, the extensive SAR measurement uncertainty analysis described in IEEE Std 1528-2013 is not
required in SAR reports submitted for equipment approval. SAR measurement variability is assessed for
each frequency band for the tissue simulating liquid with the highest measured SAR and using the highest
measured SAR configuration. The following procedure is used to assess measurement variability:
      1. Repeated measurement is not required when the original highest measured SAR is < 0.80 W/kg;
         steps 2) through 4) do not apply.
      2. When the original highest measured SAR is ≥ 0.80 W/kg, repeat that measurement once.
      3. Perform a second repeated measurement only if the ratio of largest to smallest SAR for the original
         and first repeated measurements is > 1.20 or when the original or repeated measurement is
         ≥ 1.45 W/kg (~ 10% from the 1-g SAR limit).
      4. Perform a third repeated measurement only if the original, first or second repeated measurement is
         ≥ 1.5 W/kg and the ratio of largest to smallest SAR for the original, first and second repeated
         measurements is > 1.20.
The highest measured SAR is 0.309 W/kg. Measurement variability is not required.



6.7     SAR Estimation
When SAR measurements are excluded, the SAR value of the radio is estimated according to FCC
KDB 447498. The standalone SAR value is estimated as
                         𝑃𝑜𝑤𝑒𝑟        √𝑓(𝐺𝐻𝑧)
          1𝑔 𝑆𝐴𝑅 = (               )∙(          )
                        𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒           𝑥

Where
          Power is the maximum power of the channel, including tune-up tolerance in mW
          Distance is the test separation distance in mm
          fGHz is the highest channel in the band in GHz
          x = 7.5

                              Power                 Distance    Frequency    Estimated 1g SAR
       Radio                  (mW)                   (mm)         (GHz)           (W/kg)
 Bluetooth                8                    5               2.480        0.336




Report Number: 31951457.001                                                                     Page 24 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019


         TÜV Rheinland of North America
    5015 Brandin Court, Fremont, CA 94538
    Tel: (925) 249-9123, Fax: (925) 249-9124


    7 Test Equipment List
                                                                                     Last Cal         Next Cal
     Equipment                Manufacturer         Model #         Serial/Inst #
                                                                                    mm/dd/yyyy       mm/dd/yyyy
   2450 MHz Dipole                  IMST           diSARA2450     304324-2402103     10/16/2018        10/16/2019
     DASY5 Robot                   Staubli           TX60L        F13/5R4XC1/A/01       N/A                N/A
DASY5 Robot Controller             Staubli       CS8Cspeag-TX60   F13/5R4XC1/C/01       N/A                N/A
 DASY5 Measurement
                                   SPEAG         SE UMS 011 DA         1398             N/A                N/A
       Server
   Data Acquisition
                                   SPEAG             DAE4              1419          02/01/2019        02/01/2020
     Electronics
     SAR Probe                     SPEAG            EX3DV4             3957          12/14/2018        12/14/2019
     SAM Phantom                   SPEAG          QD 000P40 CD         1806             N/A                N/A
      ELI Phantom                  SPEAG         QD OVA 002 AA         2154             N/A                N/A
       Head Liquid
                                   SPEAG             HBBL            161114-1           N/A                N/A
    600 MHz – 6 GHz
Dielectric Assessment Kit          SPEAG            DAKS-3.5           1079          02/12/2019        02/12/2020
   Submersible Digital
                                LKM Electronic     DTM 3000            3641          03/14/2018        04/14/2019
      Thermometer
  Temperature Sensor           Control Company        4184          170255262        03/16/2017        03/16/2019




    Report Number: 31951457.001                                                                   Page 25 of 26
    EUT: WT-3003 | Model: WT-3003
    Report Date: March 28, 2019


     TÜV Rheinland of North America
5015 Brandin Court, Fremont, CA 94538
Tel: (925) 249-9123, Fax: (925) 249-9124


8 Revision History
The latest revision replaces all previous versions
 Revision
   No.               Date                            Reason for change     Author
     0         March 28, 2019       Original                                 JS




Report Number: 31951457.001                                              Page 26 of 26
EUT: WT-3003 | Model: WT-3003
Report Date: March 28, 2019



Document Created: 2019-03-28 13:07:05
Document Modified: 2019-03-28 13:07:05

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