SAR

FCC ID: Z9G-EDF94

RF Exposure Info

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FCCID_4437253

Uni#+nTrust Page 1 of 10 Report No.: 190726004RFC—2 SAR TEST EXCLUSION EVALUATION REPORT True Wireless Earbuds with Active Noise Product Name: Cancellation Trade Mark: EDIFIER Model No. / HVIN: TWS NB Add. Model No. / HVIN: N/A Report Number: 190726004RFC—2 FCC 47 CFR Part 2.1093 Test Standards: RSS—102 Issue 5 FCC ID: Z9G—EDF94 IC: 10004A—EDF94 Test Result: PASS Date of Issue: September 5, 2019 Prepared for: Edifier International Limited P.O. Box 6264 General Post Office Hong Kong Prepared by: Shenzhen UnionTrust Quality and Technology Co., Ltd. 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China TEL: +86—755—2823 0888 FAX: +86—755—2823 0886 Prepared by: Reviewed by: Kevin Liang Assistant Manager Date: September 5, 2019 Technical Director Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua NewDistrict, Shenzhen, China Tel: +86—755—28230888 Fax: +86—755—28230886 E—mail: info@ultlab.com Hitp:/www.ultlab.com

Page 2 of 10 Report No.: 190726004RFC-2 Version Version No. Date Description V1.0 September 5, 2019 Original Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 3 of 10 Report No.: 190726004RFC-2 CONTENTS 1. GENERAL INFORMATION ....................................................................................................................................... 4 1.1 CLIENT INFORMATION ........................................................................................................................................ 4 1.2 EUT INFORMATION ............................................................................................................................................ 4 1.3 PRODUCT SPECIFICATION SUBJECTIVE TO THIS STANDARD ................................................................................. 4 1.4 OTHER INFORMATION ......................................................................................................................................... 4 1.5 GENERAL DESCRIPTION OF APPLIED STANDARDS ............................................................................................... 5 1.6 DEVIATION FROM STANDARDS ............................................................................................................................ 5 1.7 ABNORMALITIES FROM STANDARD CONDITIONS .................................................................................................. 5 1.8 OTHER INFORMATION REQUESTED BY THE CUSTOMER ........................................................................................ 5 2. EQUIPMENT LIST .................................................................................................................................................... 5 3. SAR TEST EXCLUSION EVALUATION ................................................................................................................... 6 3.1 REFERENCE DOCUMENTS FOR EVALUATION ........................................................................................................ 6 3.2 EXEMPTION LIMITS FOR ROUTINE EVALUATION – SAR EVALUATION .................................................................... 6 3.2.1 SAR TEST EXCLUSION THRESHOLD ........................................................................................................ 6 3.2.2 TEST PROCEDURE ................................................................................................................................. 8 3.3 MPE CALCULATION RESULTS ............................................................................................................................ 8 3.3.1 FOR BT ................................................................................................................................................. 8 APPENDIX 1 PHOTOS OF TEST SETUP ..................................................................................................................... 10 APPENDIX 1 PHOTOS OF EUT CONSTRUCTIONAL DETAILS ................................................................................. 10 Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 4 of 10 Report No.: 190726004RFC-2 1. GENERAL INFORMATION 1.1 CLIENT INFORMATION Applicant: Edifier International Limited Address of Applicant: P.O. Box 6264 General Post Office Hong Kong Manufacturer: Edifier International Limited Address of Manufacturer: P.O. Box 6264 General Post Office Hong Kong 1.2 EUT INFORMATION Product Name: True Wireless Earbuds with Active Noise Cancellation Model No. / HVIN: TWS NB Add. Model No. / HVIN: N/A Trade Mark: EDIFIER DUT Stage: Identical Prototype Bluetooth 5.0 EUT Supports Function: 2.4 GHz ISM Band: (LE/ 2LE/ LE Code mode is not supported) Sample Received Date: July 31, 2019 Sample Tested Date: July 31, 2019 to August 14, 2019 1.3 PRODUCT SPECIFICATION SUBJECTIVE TO THIS STANDARD For BT_EDR Frequency Band: 2400 MHz to 2483.5 MHz Frequency Range: 2402 MHz to 2480 MHz Bluetooth Version: Bluetooth BR + EDR Modulation Technique: Frequency Hopping Spread Spectrum(FHSS) Type of Modulation: GFSK, π/4DQPSK, 8DPSK Number of Channels: 79 Channel Separation: 1 MHz Antenna Type: Monopole Antenna Right Ear 1.1 dBi Antenna Gain: Left Ear -1.9 dBi Right Ear 11.596 dBm Maximum Peak Power: Left Ear 11.568 dBm 1.4 OTHER INFORMATION Test channels for BT_EDR Test RF Channel Lists Mode Tx/Rx Frequency Lowest(L) Middle(M) Highest(H) GFSK Channel 0 Channel 39 Channel 78 2402 MHz to 2480 MHz (DH1, DH3, DH5) 2402 MHz 2441 MHz 2480 MHz π/4DQPSK Channel 0 Channel 39 Channel 78 2402 MHz to 2480 MHz (2DH1, 2DH3, 2DH5) 2402 MHz 2441 MHz 2480 MHz 8DPSK Channel 0 Channel 39 Channel 78 2402 MHz to 2480 MHz (3DH1, 3DH3, 3DH5) 2402 MHz 2441 MHz 2480 MHz Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 5 of 10 Report No.: 190726004RFC-2 1.5 GENERAL DESCRIPTION OF APPLIED STANDARDS The EUT is a RF product, according to the specifications of the manufacturers. It must comply with the requirements of the following standards: FCC 47 CFR Part 2.1093 RSS-102 Issue 5 All test items have been performed and recorded as per the above standards 1.6 DEVIATION FROM STANDARDS None. 1.7 ABNORMALITIES FROM STANDARD CONDITIONS None. 1.8 OTHER INFORMATION REQUESTED BY THE CUSTOMER None. 2. EQUIPMENT LIST Please refer to the RF test report. Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 6 of 10 Report No.: 190726004RFC-2 3. SAR TEST EXCLUSION EVALUATION 3.1 REFERENCE DOCUMENTS FOR EVALUATION No. Identity Document Title 1 FCC 47 CFR Part 2.1093 Radiofrequency radiation exposure evaluation: portable devices. Radio Frequency (RF) Exposure Compliance of 2 RSS-102 Issue 5 Radiocommunication Apparatus (All Frequency Bands) 3 KDB 447498 D01 General RF RF EXPOSURE PROCEDURES AND EQUIPMENT Exposure Guidance v06 AUTHORIZATION POLICIES FOR MOBILE AND PORTABLE DEVICES 3.2 EXEMPTION LIMITS FOR ROUTINE EVALUATION – SAR EVALUATION 3.2.1 SAR Test Exclusion Threshold 3.2.1.1 KDB 447498 D01 v06 Appendix A SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The equation and threshold in 4.3.1 must be applied to determine SAR test exclusion. Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 7 of 10 Report No.: 190726004RFC-2 3.2.1.2 RSS-102 Issue 5 Table 1: SAR evaluation – Exemption limits for routine evaluation based on frequency and separation distance4,5 4 The exemption limits in Table 1 are based on measurements and simulations of half-wave dipole antennas at separation distances of 5 mm to 25 mm from a flat phantom, providing a SAR value of approximately 0.4 W/kg for 1 g of tissue. For low frequencies (300 MHz to 835 MHz), the exemption limits are derived from a linear fit. For high frequencies (1900 MHz and above), the exemption limits are derived from a third order polynomial fit. 5 Transmitters operating between 0.003-10 MHz, meeting the exemption from routine SAR evaluation, shall Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 8 of 10 Report No.: 190726004RFC-2 demonstrate compliance to the instantaneous limits in Section 4. 3.2.2 Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 3.3 MPE CALCULATION RESULTS Note: For the test results, the EUT had been tested with all conditions. But only the worst case was shown in test report. 3.3.1 For BT For BT_BR & EDR function, operating at 2402MHz to 2480 MHz for GFSK, π/4 DQPSK, 8DPSK 3.3.1.1 Antenna Type: Chain 0: Monopole Antenna 3.3.1.2 Antenna Gain: Chain 0: 2402MHz to 2480 MHz: 1.1 dBi 3.3.1.3 Minimum contact distance: The following is the product antenna location. BT Antenna >15mm The minimum contact distance is more than 15 mm. So, the 15 mm separation distance applies. Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 9 of 10 Report No.: 190726004RFC-2 3.3.1.4 Results for FCC 47 CFR Part 2.1093 Tune-up SAR Test Maximum Tune-up Separation Operating Frequency Power Tolerance Exclusion Power Distance Mode (Average) Threshold (MHz) (dBm) (dBm) (dBm) (mW) (mm) (mW) EDR 2402-2480 7.5 2 9.5 8.91 15 29 So the transmitter complies with the RF exposure requirements and the SAR is not required. 3.3.1.5 Results for RSS-102 Issue 5 Tune-up SAR Test Maximum Tune-up Separation Operating Frequency Power Tolerance Exclusion Power Distance Mode (Average) Threshold (MHz) (dBm) (dBm) (dBm) (mW) (mm) (mW) EDR 2402-2480 7.5 2 9.5 8.91 15 15 So the transmitter complies with the RF exposure requirements and the SAR is not required. Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com

Page 10 of 10 Report No.: 190726004RFC-2 APPENDIX 1 PHOTOS OF TEST SETUP N/A APPENDIX 1 PHOTOS OF EUT CONSTRUCTIONAL DETAILS Refer to Appendix 2 for EUT external and internal Photos. *** End of Report *** The test report is effective only with both signature and specialized stamp. The result(s) shown in this report refer only to the sample(s) tested. Without written approval of UnionTrust, this report can’t be reproduced except in full. Shenzhen UnionTrust Quality and Technology Co., Ltd. Address: 16/F, Block A, Building 6, Baoneng Science and Technology Park, Qingxiang Road No.1, Longhua New District, Shenzhen, China Tel: +86-755-28230888 Fax: +86-755-28230886 E-mail: info@uttlab.com Http://www.uttlab.com


Document Created: 2019-09-11 03:00:51
Document Modified: 2019-09-11 03:00:51
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