2BMHF-TTD-2807Speaker

Guangzhou Wanshuntong Technology Co., Ltd 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Guangzhou Wanshuntong Technology Co., Ltd Address: 3rd Floor, Building R, Tongchuang Technology Park, Shijing Avenue, Baiyun Lake, Baiyun District, Guangzhou City, Guangdong Province, China Product Name: Speaker FCC ID: 2BMHF-TTD-2807 Model(s): TTD-2807, TTD-2801, TTD-2802, TTD-2803, TTD-2804, TTD-2805, TTD-2806 2.911(d)(5)(i) Equipment Type We, [Guangzhou Wanshuntong Technology Co., Ltd] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Qingxi Zhuang Date: Nov. 29, 2024 Title: MANAGER Company name: Guangzhou Wanshuntong Technology Co., Ltd Signature: NOTE 1 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Guangzhou Wanshuntong Technology Co., Ltd 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Guangzhou Wanshuntong Technology Co., Ltd Address: 3rd Floor, Building R, Tongchuang Technology Park, Shijing Avenue, Baiyun Lake, Baiyun District, Guangzhou City, Guangdong Province, China Product Name: Speaker FCC ID: 2BMHF-TTD-2807 Model(s): TTD-2807, TTD-2801, TTD-2802, TTD-2803, TTD-2804, TTD-2805, TTD-2806 2.911(d)(5)(ii) Applicant filing We, [Guangzhou Wanshuntong Technology Co., Ltd] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Qingxi Zhuang Date: Nov. 29, 2024 Title: MANAGER Company name: Guangzhou Wanshuntong Technology Co., Ltd Signature: NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

GuangzhouWanshuntongTechnologyCo.,Ltd 2.911(d)(7)USAAgentv1.3 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:GuangzhouWanshuntongTechnologyCo.,Ltd Address:3rdFloor,BuildingR,TongchuangTechnologyPark,ShijingAvenue,Baiyun Lake,BaiyunDistrict,GuangzhouCity,GuangdongProvince,China ProductName:Speaker FCCID:2BMHF-TTD-2807 Model(s):TTD-2807,TTD-2801,TTD-2802,TTD-2803,TTD-2804,TTD-2805, TTD-2806 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[GuangzhouWanshuntongTechnologyCo.,Ltd](“theapplicant”)designate[USA MEIHUATRADINGINC] NOTE1 forthepurposeofacceptingserviceofprocessonbehalf oftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. GuangzhouWanshuntongTechnologyCo.,Ltd 2.911(d)(7)USAAgentv1.3 USAAgent Companyname:USAMEIHUATRADING INC Address:5379PineValleyCtBoulderCO 80301UnitedStates FRNNumber:0033406166 ContactName:HarleyQuinn TelephoneNo:1-312-363-9424 Email:[email protected] Applicant Companyname:Guangzhou WanshuntongTechnologyCo.,Ltd Address:3rdFloor,BuildingR, TongchuangTechnologyPark,Shijing Avenue,BaiyunLake,BaiyunDistrict, GuangzhouCity,GuangdongProvince, China FCCRegistrationNumber(FRN): 0036338432 FCCGranteeCode:2BMHF ContactName:QingxiZhuang TelephoneNo:020-28345738 Email:[email protected] Signature: Title:MANAGER Signature: Title:MANAGER Date:Nov.29,2024Date:Nov.29,2024 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Guangzhou Wanshuntong Technology Co., Ltd Agent Authorization Company: Guangzhou Wanshuntong Technology Co., Ltd Address: 3rd Floor, Building R, Tongchuang Technology Park, Shijing Avenue, Baiyun Lake, Baiyun District, Guangzhou City, Guangdong Province, China Product Name: Speaker Model Number(s): TTD-2807, TTD-2801, TTD-2802, TTD-2803, TTD-2804, TTD-2805, TTD- 2806 Product Description: Speaker We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: Nov. 29, 2024 Name: Qingxi Zhuang Title: MANAGER Company: Guangzhou Wanshuntong Technology Co., Ltd

Guangzhou Wanshuntong Technology Co., Ltd Model Difference Declaration To Whom It May Concern, We, Guangzhou Wanshuntong Technology Co., Ltd (Speaker); Trade Mark: N/A, Model Number: TTD- 2807, TTD-2801, TTD-2802, TTD-2803, TTD-2804, TTD-2805, TTD-2806; All model’s the function, software and electric circuit are the same, only with a product color and model named different. Test sample model: TTD-2807. Please contact me if you have any question. Signature: Date: Nov. 29, 2024 Name: Qingxi Zhuang Title: MANAGER

Guangzhou Wanshuntong Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Nov. 29, 2024 Subject; Request for Confidentiality FCC ID: 2BMHF-TTD-2807 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Qingxi Zhuang Title: MANAGER

FCC ID LABEL: Ca. 10mm x 20mm Label Location FCC ID: 2BMHF-TTD-2807

MPE ESTIMATION FCC ID: 2BMHF-TTD-2807 1, Limit for General Population/ Uncontrolled Exposures Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/1500 30 1.5GHz---100GHz 1.0 30 2, Estimation Result For BT: Mode Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (linear) MPE (mW/cm²) 2402 3.82 3±1(4) 2.51 -0.68 0.86 0.00043 Note: Note: The estimation distance is 20cm Note: PK Output power= conducted power. Conducted power see the test report HK2411156808-E, antenna gain=-0.68dBi when the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.00043 which is< 1.0, RF Exposure testing is not required. -------The End-------

Name: Shenzhen Yuhao Senda Technology Co., LTD Company address:3rd Floor, Building 4, Xiyuantong Industrial Park, Zikeng Village, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province

Page 1 of 53 Report No.: HK2411156808-E FCC Test Report Test report On Behalf of Guangzhou Wanshuntong Technology Co., Ltd For Speaker Model No.: TTD-2807, TTD-2801, TTD-2802, TTD-2803, TTD-2804, TTD-2805, TTD-2806 FCC ID: 2BMHF-TTD-2807 Prepared For : Guangzhou Wanshuntong Technology Co., Ltd 3rd Floor, Building R, Tongchuang Technology Park, Shijing Avenue, Baiyun Lake, Baiyun District, Guangzhou City, Guangdong Province, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Nov. 13, 2024 ~ Nov. 26, 2024 Date of Report: Nov. 26, 2024 Report Number: HK2411156808-E Page 2 of 53 Report No.: HK2411156808-E Test Result Certification Applicant’s name ....... Guangzhou Wanshuntong Technology Co., Ltd Address ....................... . 3rd Floor, Building R, Tongchuang Technology Park, Shijing Avenue, Baiyun Lake, Baiyun District, Guangzhou City, Guangdong Province, China Manufacturer's Name .......................... . Guangzhou Wanshuntong Technology Co., Ltd Address ........................ 3rd Floor, Building R, Tongchuang Technology Park, Shijing Avenue, Baiyun Lake, Baiyun District, Guangzhou City, Guangdong Province, China Product description Trade Mark: N/A Product name ................ Speaker Model and/or type reference ................... . TTD-2807, TTD-2801, TTD-2802, TTD-2803, TTD-2804, TTD-2805, TTD-2806 Standards ................... . 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ................................. . Date (s) of performance of tests ... . Nov. 13, 2024 ~ Nov. 26, 2024 Date of Issue ................................. Nov. 26, 2024 Test Result ..................................... Pass Testing Engineer : (Len Liao) Technical Manager : (Sliver Wan) Authorized Signatory : (Jason Zhou) Page 3 of 53 Report No.: HK2411156808-E Table of Contents Page 1. Summary ........................................................................................................................................................ 5 1.1. Test Standards ......................................................................................................................................... 5 1.2. Test Description ....................................................................................................................................... 5 1.3. Information of the Test Laboratory ........................................................................................................... 6 1.4. Statement of the Measurement Uncertainty ............................................................................................ 6 2. General Information ....................................................................................................................................... 7 2.1. Environmental Conditions ........................................................................................................................ 7 2.2. General Description of EUT ..................................................................................................................... 7 2.3. Description of Test Modes and Test Frequency ....................................................................................... 8 2.4. Equipments Used During the Test ........................................................................................................... 9 2.5. Related Submittal(S) / Grant (S) ............................................................................................................ 10 2.6. Modifications .......................................................................................................................................... 10 2.7. Description of Test Setup ....................................................................................................................... 10 2.8. Description of Support Units .................................................................................................................. 11 3. Test Conditions and Results ...................................................................................................................... 12 3.1. Conducted Emissions Test .................................................................................................................... 12 3.2. Radiated Emissions and Band Edge ..................................................................................................... 15 3.3. Maximum Peak Conducted Output Power ............................................................................................ 26 3.4. 20db Bandwidth ..................................................................................................................................... 27 3.5. Frequency Separation ........................................................................................................................... 31 3.6. Number of Hopping Frequency ............................................................................................................. 33 3.7. Time of Occupancy (Dwell Time) ........................................................................................................... 35 3.8. Out-of-Band Emissions .......................................................................................................................... 39 3.9. Pseudorandom Frequency Hopping Sequence .................................................................................... 49 3.10. An…

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Page 35 of 53 Report No.: HK2411156808-E 3.7. Time of Occupancy (Dwell Time) Limit The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Test Procedure The transmitter output was connected to the spectrum analyzer through an attenuator. Set center frequency of spectrum analyzer=operating frequency with 1MHz RBW and 3MHz VBW, Span 0Hz. Test Configuration EUT SPECTRUM ANALYZER Test Results Modulation Packet Pulse time (ms) Dwell time (second) Limit (second) Result GFSK DH1 0.381 0.122 0.40 PASS DH3 1.638 0.262 DH5 2.885 0.308 π/4DQPSK 2-DH1 0.390 0.125 0.40 PASS 2-DH3 1.642 0.263 2-DH5 2.889 0.308 8DPSK 3-DH1 0.390 0.125 0.40 PASS 3-DH3 1.642 0.263 3-DH5 2.889 0.308 Note: 1. We have tested all mode at high, middle and low channel, and recoreded worst case at middle channel. 2. Dwell time=Pulse time (ms) × (1600 ÷ 2 ÷ 79) ×31.6 Second for DH1, 2-DH1, 3-DH1 Dwell time=Pulse time (ms) × (1600 ÷ 4 ÷ 79) ×31.6 Second for DH3, 2-DH3, 3-DH3 Dwell time=Pulse time (ms) × (1600 ÷ 6 ÷ 79) ×31.6 Second for DH5, 2-DH5, 3-DH5 Test plot as follows: Page 36 of 53 Report No.: HK2411156808-E GFSK Modulation DH1 DH3 DH5 Page 37 of 53 Report No.: HK2411156808-E π/4DQPSK Modulation 2-DH1 2-DH3 2-DH5 Page 38 of 53 Report No.: HK2411156808-E 8DPSK Modulation 3-DH1 3-DH3 3-DH5 Page 39 of 53 Report No.: HK2411156808-E 3.8. Out-of-Band Emissions Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF con-ducted or a radiated measurement, pro-vided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter com-plies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated device is operating, the RF power that is produced shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided that the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of root-mean-square averaging over a time interval, as permitted under Section 5.4(4), the attenuation required shall be 30 dB instead of 20 dB. Attenuation below the general field strength limits specified in RSS-Gen is not required. Test Procedure Connect the transmitter output to spectrum analyzer using a low loss RF cable, and set the spectrum analyzer to RBW=100 kHz, VBW= 300 kHz, peak detector , and max hold. Measurements utilizing these setting are made of the in-band reference level, band edge and out-of-band emissions. Test Configuration EUT SPECTRUM ANALYZER Test Results Remark: The measurement frequency range is from 30MHz to the 10th harmonic of the fundamental frequency. The lowest, middle and highest channels are tested to verify the spurious emissions and bandage measurement data. We measured all conditions (DH1, DH3, DH5) and recorded worst case at DH5, 2DH5 and 3DH5. Test plot as follows: Page 40 of 53 Report No.: HK2411156808-E GFSK CH00 CH39 Page 41 of 53 Report No.: HK2411156808-E CH78 Page 42 of 53 Report No.: HK2411156808-E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 43 of 53 Report No.: HK2411156808-E π/4DQPSK CH00 CH39 Page 44 of 53 Report No.: HK2411156808-E CH78 Page 45 of 53 Report No.: HK2411156808-E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 46 of 53 Report No.: HK2411156808-E 8DPSK CH00 CH39 Page 47 of 53 Report No.: HK2411156808-E CH78 Page 48 of 53 Report No.: HK2411156808-E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 49 of 53 Report No.: HK2411156808-E 3.9. Pseudorandom Frequency Hopping Sequence TEST APPLICABLE For 47 CFR Part 15C section 15.247 (a) (1): Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hop-ping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400–2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hop-ping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence Requirement The pseudorandom frequency hopping sequence may be generated in a nice-stage shift register whose 5 th and 9 th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones, for example: the shift register is initialized with nine ones. ● Number of shift register stages:9 ● Length of pseudo-random sequence:29-1=511…

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Test model: TTD-2807 Radiated Emission Conducted Emission