RF Info

FCC ID: T2C-BT42

RF Exposure Info

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FCCID_4414568

                                                                  2013-2016, 20th Floor, Business Center, JiahuiXin Cheng, No 3027,
                                                                  Shen Nan Road, Fu Tian, Shen Zhen, Guang Dong, P. R. China
                                                                  Tel: + 86 755 83642690      Fax: + 86 755 83297077
                                                                  www.kmolab.com




      RF Exposure Evaluation Report
                                          Under:
                                     47 CFR Part 2.1093
                        KDB447498 D01 General RF Exposure Guidance v06

                                                 Prepared For:
              YEALINK (XIAMEN) NETWORK
                TECHNOLOGY CO., LTD.
       309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China



                                            FCC ID: T2C-BT42
                                      EUT: Bluetooth USB Dongle
                                                 Model: BT42


                                                 July 29, 2019
                                                    Issue Date:

                                                Original Report
                                                   Report Type:




                                            Test Engineer: Jacky Huang




                                          Review By: Apollo Liu / Manager




The test report consists 7 pages in total. It may be duplicated completely for legal use with the allowance of the
applicant. It shall not be reproduced except in full, without the written approval of Ke Mei Ou Laboratory
Corporation. The test result in the report only applied to the tested sample.


YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.                                                                                                                         FCC ID:T2C-BT42


                                                                                  Table of Contents

1. General Information .................................................................................................................................................................... 4
   1. 1 Notes......................................................................................................................................................................................... 4
   1. 2 Testing Laboratory................................................................................................................................................................... 4
   1. 3 Detai1. 3 Details of Applicant ................................................................................................................................................ 4
   1. 4 Application Details .................................................................................................................................................................. 4
   1. 5 Details of Manufacturer .......................................................................................................................................................... 4
   1. 6 Test Item ................................................................................................................................................................................... 4
   1. 7 Applicable Standards ............................................................................................................................................................... 5
2. Technical Test................................................................................................................................................................................ 6
   2. 1 Summary of Test Results ........................................................................................................................................................ 6
3. EUT Modifications ....................................................................................................................................................................... 6
4. General SAR test exclusion guidance ........................................................................................................................................ 7
   4.1_4.3.1 Standalone SAR test exclusion considerations (FCC)................................................................................................. 7
   4.2_4.3.1 RF Exposure Requirements ........................................................................................................................................... 7
   4.3 Conclusion ................................................................................................................................................................................ 7




KMO FCC MPE Report                                                                              Page 2 of 7                                          Report #: KSZ2019062702J02


YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.                               FCC ID:T2C-BT42


Report Revision History
       Report #           Version              Description                     Issued Date
  KSZ2019062702J02        Rev.01          Initial issue of report             July 29, 2019




KMO FCC MPE Report                     Page 3 of 7                  Report #: KSZ2019062702J02


YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.                                                                   FCC ID:T2C-BT42


1. General Information
1. 1 Notes
The test results of this report relate exclusively to the test item specified in 1.6. The KMO Lab does not assume
responsibility for any conclusions and generalizations drawn from the test results with regard to other specimens or samples
of the type of the equipment represented by the test item. The test report may only be reproduced or published in full.
Reproduction or publication of extracts from the report requires the prior written approval of the KMO Lab.

1. 2 Testing Laboratory
 Test Firm Name:                                Ke Mei Ou Lab Co., Ltd.
                                                2013-2016, 20th Floor, Business Center, Jiahui Xin Cheng, No 3027, Shen Nan
 Test Firm Address:
                                                Road, Fu Tian, Shen Zhen, Guang Dong, P. R. China
 FCC Designation Number:                        CN1532
 Test Firm Registration Number:                 344480
 Internet:                                      www.kmolab.com
 Email:                                         kmo@kmolab.com
 ANSI-ASQ National Accreditation Board/ACLASS ISO/IEC 17025 Accredited Lab for telecommunication standards. The Registration Number is
 AT-1532. The testing quality system meets with ISO/IEC-17025 requirements, This approval results is accepted by MRA of ILAC.


1. 3 Detai1. 3 Details of Applicant
 Name:            YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.
 Address:         309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China

1. 4 Application Details
Date of Receipt of Application:              June 27, 2019
Date of Receipt of Test Item:                July 4, 2019
Date of Test :                               July 4~July 23, 2019

1. 5 Details of Manufacturer
 Name:            Same as applicant
 Address:         Same as applicant

1. 6 Test Item
                                                   EUT Feature
 EUT Description:                       Bluetooth USB Dongle
 Brand Name:                            Yealink
 Model Name:                            BT42
                                           Bluetooth BT       Bluetooth v4.0 LE      Bluetooth v4.2 LE
 EUT RF Technology:
                                           Bluetooth v5.0 LE
 HW Version:                            WF50V
 SW Version:                            BT42
 EUT Stage:                                Identical Prototype    Production
 Note: The above EUT’s information was declared by manufacturer. Please refer to the specifications or user’s manual for
 more detailed description.
Additional Information
                                         Standard Product Specification
 Tx/Rx Frequency Range                                                 2402~2480 MHz
 Number of Channels                                                            79
 Carrier Frequency of Each Channel                              f=2402+k MHz (k=0,1,2…,78)
 Antenna Type / Gain                    Internal PCB Antenna / gain             3      dBi
                                                                 Bluetooth BR 1Mbps: GFSK
 Type of Modulation                                          Bluetooth EDR 2Mbps: π/4-DQPSK
                                                               Bluetooth EDR 3Mbps: 8DPSK
                                            AC
 EUT Operational Condition                  DC à        From Battery      External AC adapter        POE       PC
                                            Li-ion battery




KMO FCC MPE Report                                               Page 4 of 7                         Report #: KSZ2019062702J02


YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.                                                           FCC ID:T2C-BT42


1. 7 Applicable Standards
                                                   Applicable Standards
 According to the specifications of the manufacturer, the EUT must comply with the requirements of the following
 standards:
 47 CFR Part 2.1093
 KDB447498 D01 General RF Exposure Guidance v06
 Note: All test items were verified and recorded according to the standards and without any deviation during the test.




KMO FCC MPE Report                                          Page 5 of 7                       Report #: KSZ2019062702J02


YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.                                             FCC ID:T2C-BT42


2. Technical Test
2. 1 Summary of Test Results

                     The EUT has been tested according to the following specifications:
        FCC Rules                   Test Type                     Limit          Result         Notes
                                                       ≤ 3.0 for 1-g SAR, and
   KDB 447498 Section:
                                  SAR Exclusion           ≤ 7.5 for 10-g          PASS         Complies.
         4.3.1.
                                                           extremity SAR,


3. EUT Modifications
No modification by test lab.




KMO FCC MPE Report                                  Page 6 of 7                 Report #: KSZ2019062702J02


YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.                                                          FCC ID:T2C-BT42



4. General SAR test exclusion guidance
4.1_4.3.1 Standalone SAR test exclusion considerations (FCC)

Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body
and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or
numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s),
listed below, is (are) satisfied.

4.2_4.3.1 RF Exposure Requirements

                                              RF Exposure Requirements
 a) For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are
 determined by the following:
 [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for
 1-g SAR, and ≤ 7.5 for 10-g extremity SAR,30 where
 l f(GHz) is the RF channel transmit frequency in GHz
 l Power and distance are rounded to the nearest mW and mm before calculation31
 l The result is rounded to one decimal place for comparison
 l The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below
 The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission
 frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm
 according to 4.1 f) is applied to determine SAR test exclusion.


4.3 Conclusion
                            During normal operation, user extremities can come within 20 cm of the internal antenna and
                            therefore product is considered as “Portable”.

                                           Compliance with FCC Rules
                              Maximum tune-up        Test Separation                                        Exclusion
       Mode/Band                                                                   Calculate Value
                            Conducted Power (dBm)          (mm)                                             Threshold
     2402~2480MHz
                                       3.92                        5                     0.76                   3.0
     CH00_2402MHz


----------------------------------------------------------End of Report ----------------------------------------------------




KMO FCC MPE Report                                         Page 7 of 7                      Report #: KSZ2019062702J02



Document Created: 2019-08-26 22:52:45
Document Modified: 2019-08-26 22:52:45

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