2AITF-BTHS-NB17BTHS-NB17

FCC Statement This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: 1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try correct the interference by one or more of the following measures: - Reorient the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into and outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.

DATE：2020-may-12 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AITF-BTHS-NB17 Product Name: BTHS-NB17 Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) •Schematics •Block diagram •Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name：Nisa Wang Title：Manager Applicant Company：Avantree Technology Co., Ltd.

Model No.: BTHS-NB17

Model No.: BTHS-NB17

RF Exposure Evaluation Statement 1.1 RF Exposure Compliance Requirement 1.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied. 1.1.2 Limits The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 17 The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion 1 .1.3 EUT RF Exposure Operational Mode: EDR （π/4-QPSK worst case） Channel Maximum Peak Conducted Output Power (dBm) Tune up tolerance (dB) Maximum tune-up Power Calculated value Exclusion threshold (dBm) (mW) 2402MHz -0.06 ±1 0.94 1.24 0.38 3.0 2441MHz 1.89 ±1 2.89 1.95 0.61 2480MHz 2.84 ±1 3.84 2.42 0.76 Conclusion: the calculated value ≤3.0, SAR is exempted.

Report No. : BLA-EMC-201904-A37-01 1 Cover PageFCC Report (Bluetooth) Product Name : BTHS-NB17 Trade mark : N/A Model No. : BTHS-NB17 FCC ID : 2AITF-BTHS-NB17 Report Number : BLA-EMC-201904-A37-01 Date of sample receipt : April 15, 2019 Date of Test: : April 15, 2019–April 22, 2019 Date of Issue : April 20, 2020 Test standard : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Test result : PASS Prepared for: Avantree Technology Co., Ltd. The 4th Floor, Yuepeng Building, No.1019 Jiabin Rd, Luohu District, Shenzhen, China Prepared by: BlueAsia of Technical Services(Shenzhen) Co., Ltd. IOT Test Centre of BlueAsia No. 448 Bulong Road, Bantian Street, Longgang District, Shenzhen, China TEL: +86-755-28682673 FAX: +86-755-28682673 Compiled by: Review by: Approved by: Date: April 20, 2020 Report No. : BLA-EMC-201904-A37-01 Page 2 of 55 BlueAsia of Technical Services(Shenzhen) Co., Ltd. IOT Test Centre of BlueAsia, No. 448 Bulong Road, Bantian Street, Longgang District, Shenzhen, China Telephone: TEL: +86-755-28682673 FAX: +86-755-28682673 2 Version Version No. Date Description 00 April 23, 2019 Original 01 April 20, 2020 Replace the applicant, product name and model Report No. : BLA-EMC-201904-A37-01 Page 3 of 55 BlueAsia of Technical Services(Shenzhen) Co., Ltd. IOT Test Centre of BlueAsia, No. 448 Bulong Road, Bantian Street, Longgang District, Shenzhen, China Telephone: TEL: +86-755-28682673 FAX: +86-755-28682673 3 Contents Page 1 COVER PAGE ...........................................................................................................................................1 2 VERSION ...................................................................................................................................................2 3 CONTENTS ...............................................................................................................................................3 4 TEST SUMMARY ......................................................................................................................................4 5 GENERAL INFORMATION .......................................................................................................................5 5.1 GENERAL DESCRIPTION OF EUT ..........................................................................................................5 5.2 TEST MODE .........................................................................................................................................7 5.3 TEST FACILITY.....................................................................................................................................7 5.4 TEST LOCATION...................................................................................................................................7 5.5 OTHER INFORMATION REQUESTED BY THE CUSTOMER ..........................................................................7 5.6 DESCRIPTION OF SUPPORT UNITS ........................................................................................................7 6 TEST INSTRUMENTS LIST ......................................................................................................................8 7 TEST RESULTS AND MEASUREMENT DATA .....................................................................................10 7.1 ANTENNA REQUIREMENT ....................................................................................................................10 7.2 CONDUCTED EMISSIONS ....................................................................................................................11 7.3 CONDUCTED PEAK OUTPUT POWER ...................................................................................................14 7.4 20DB EMISSION BANDWIDTH ..............................................................................................................18 7.5 CARRIER FREQUENCIES SEPARATION .................................................................................................22 7.6 HOPPING CHANNEL NUMBER .............................................................................................................26 7.7 DWELL TIME ......................................................................................................................................27 7.8 PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ...........................................................................29 7.9 BAND EDGE.......................................................................................................................................30 7.9.1 Conducted Emission Method ......................................................................................................30 7.9.2 Radiated Emission Method .........................................................................................................34 7.10 SPURIOUS EMISSION .........................................................................................................................36 7.10.1 Conducted Emission Method ..................................................................................................36 7.10.2 Radiated Emission Method .....................................................................................................38 8 TEST SETUP PHOTO .............................................................................................................................46 9 EUT CONSTRUCTIONAL DETAILS .......................................................................................................48 Report No. : BLA-EMC-201904-A37-01 Page 4 of 55 BlueAsia of Technical Services(Shenzhen) Co., Ltd. IOT Test Centre of BlueAsia, No. 448 Bulong Road, Bantian Street, Longgang District, Shenzhen, China Telephone: TEL: +86-755-28682673 FAX: +86-755-28682673 4 Test Summary Test Item Section in CFR 47 Result Antenna Requirement 15.203/15.247 (c) Pass AC Power Line Conducted Emission 15.207 Pass Conducted Peak Output Power 15.247 …

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Model No.:BTHS-NB17