2BRQM-KBS100Karaoke Machine for Kids

Shenzhen Yusu Technology Co., LTD 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Shenzhen Yusu Technology Co., LTD Address: Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China Product Name: Karaoke Machine for Kids FCC ID: 2BRQM-KBS100 Model(s): KBS100-PU, KBS100-BL, KBS100-PK, KBS100-PU, KBS100-BK, KBS100-YE, KBS100-GR, KBS200-BL, KBS200-PK, KBS200-PU, KBS200-BK, KBS200-YE, KBS200-GR, KBS300-BL, KBS300-PK, KBS300-PU, KBS300-BK, KBS300-YE, KBS300-GR 2.911(d)(5)(i) Equipment Type We, [Shenzhen Yusu 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: Yepa Huang Date: Aug. 08, 2025 Signature: Title and Company name: Manager / Shenzhen Yusu Technology Co., LTD 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

Shenzhen Yusu Technology Co., LTD 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Yusu Technology Co., LTD Address: Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China Product Name: Karaoke Machine for Kids FCC ID: 2BRQM-KBS100 Model(s): KBS100-PU, KBS100-BL, KBS100-PK, KBS100-PU, KBS100-BK, KBS100-YE, KBS100-GR, KBS200-BL, KBS200-PK, KBS200-PU, KBS200-BK, KBS200-YE, KBS200-GR, KBS300-BL, KBS300-PK, KBS300-PU, KBS300-BK, KBS300-YE, KBS300-GR 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Yusu 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 coveredcommunications equipment. Yours sincerely, Name: Yepa Huang Date: Sep. 02, 2025 Signature: Title and Company name: Manager / Shenzhen Yusu Technology Co., LTD 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

Shenzhen Yusu Technology Co., LTD 2.911 (d)(7)USA Agentv1.3 Section 2.911(d)(7) USA Agent for Service of Process Company name: Shenzhen Yusu Technology Co., LTD Address: Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China Product Name: Karaoke Machine for Kids FCC ID: 2BRQM-KBS100 Model(s): KBS100-PU, KBS100-BL, KBS100-PK, KBS100-PU, KBS100-BK, KBS100-YE, KBS100-GR, KBS200-BL, KBS200-PK, KBS200-PU, KBS200-BK, KBS200-YE, KBS200-GR, KBS300-BL, KBS300-PK, KBS300-PU, KBS300-BK, KBS300-YE, KBS300-GR 2.911(d)(7) USA Designated Agent for Service of Process We, [Shenzhen Yusu Technology Co., LTD] (“the applicant”) designate [Opuor INC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Shenzhen Yusu Technology Co., LTD 2.911 (d)(7)USA Agentv1.3 USA Agent Company name: Opuor INC Address: 6510 S Academy Blvd Ste A 642, Colorado Springs, CO 80906, United States FCC Registration Number(FRN): 0036496966 Contact Name: Shuiqing Yang Telephone No: (650) 315-6698 Email: [email protected] Applicant Company name: Shenzhen Yusu Technology Co., LTD Address: Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China FCC Registration Number (FRN): 0037408770 FCC Grantee Code: 2BRQM Contact Name: Yepa Huang Telephone No: 0755-28702845 Email: [email protected] Signature: Title: manager Signature: Title: Manager Date: Sep. 01, 2025 Date: Sep. 01, 2025 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; 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-communications-supply-chain-through-the

Shenzhen Yusu Technology Co., LTD Agent Authorization Company: Shenzhen Yusu Technology Co., LTD Address: Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China Product Name: Karaoke Machine for Kids Model Number(s): KBS100-PU, KBS100-BL, KBS100-PK, KBS100-PU, KBS100-BK, KBS100-YE, KBS100-GR, KBS200-BL, KBS200-PK, KBS200-PU, KBS200-BK, KBS200-YE, KBS200-GR, KBS300-BL, KBS300-PK, KBS300-PU, KBS300-BK, KBS300-YE, KBS300-GR Product Description: Karaoke Machine for Kids 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: Sep. 02, 2025 Name: Yepa Huang Title: Manager Company: Shenzhen Yusu Technology Co., LTD

Shenzhen Yusu Technology Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Sep. 02, 2025 Subject; Request for Confidentiality FCC ID: 2BRQM-KBS100 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 Tune-up Procedure Software security requirement 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 pursuantto 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: Yepa Huang Title: Manager

Shenzhen Yusu Technology Co., LTD Model Difference Declaration To Whom It May Concern, We, Shenzhen Yusu Technology Co., LTD (Karaoke Machine for Kids); Trade Mark: N/A, Model Number: KBS100-PU, KBS100-BL, KBS100-PK, KBS100-PU, KBS100-BK, KBS100- YE, KBS100-GR, KBS200-BL, KBS200-PK, KBS200-PU, KBS200-BK, KBS200-YE, KBS200- GR, KBS300-BL, KBS300-PK, KBS300-PU, KBS300-BK, KBS300-YE, KBS300-GR; All model's the function, software and electric circuit are the same, only with product color and model named different. Test sample model: KBS100-PU. Please contact me if you have any question. Signature: Date: Sep. 02, 2025 Name: Yepa Huang Title: Manager

LABEL: Ca: 5mm x 20mm Label Location FCC ID: 2BRQM-KBS100

FCC RF Exposure Product Name: Karaoke Machine for Kids FCC ID: 2BRQM‐KBS100 Model(s): KBS100‐PU 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separation distance mm Result Limit (mW/cm 2 ) SAR Test Exclusion 2480 ‐2.02 ‐2±1 ‐1/0.79 5 0.249 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2508064334‐E, antenna gain=2.338dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.249 which is<= 3, RF Exposure testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f (GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

2.4G-2.48G频段板载PIFA天线测试报告 2 . 4 G - 2 . 4 8 G I n v e r t e d F A n t e n n a S p e c i f i c a t i o n SPECIFICATIONS F r e q u e n c y （ M H z ） 2 4 0 0 - 2 4 8 0 P e a k G a i n （ d B i ） 2 . 3 3 8 A v e r a g e G a i n （ d B i ） ＞ - 5 . 5 V S W R ＜ 3 . 2 I m p e d a n c e （ Ω ） 5 0 Ω AntennaTypePlannarInvertedF Antennaonboard PolarizationLinear M a n u f a c t u r e Z H U H A I J I E L I T E C H N O L O G Y C O . , L T D Address: N o . 3 3 3 K e x i n g R o a d , N a n p i n g S c i e n c e P a r k , X i a n g z h o u D i s t r i c t , Z h u h a i T e s t e q u i p m e n t H W A - T E C H AntennaPhoto& Length(mm) 天线无源S参数： AntennapassiveS-parameters: 驻波比（ VSWR ）、回波损耗（ ReturnLoss ）及史密斯圆图（ Smith ） 天线效率及增益： Antennaefficiencyandgain ： Frequency（MHz）Gain（dBi）Effciency（%）AverageGain（dBi）Efficiency（dB） 24002.33859.39%-2.915-2.263 24101.60349.11%-3.883-3.088 24201.29546.04%-4.014-3.369 24300.38836.89%-4.91-4.331 24400.18734.00%-5.276-4.685 24500.0231.71%-5.431-4.988 24600.50734.88%-5.02-4.575 24700.29131.89%-5.323-4.963 24800.42932.89%-5.195-4.83 Average0.7839.64%-4.66-4.12 Peak2.33859.39%-2.915-2.263 天线2400MHz2D-ThetaPattern 天线2400MHz2D-PhiPattern 2400MHz3D-TotalPattern

Page 1 of 48 Report No.: HK2508064334-E FCC Test Report Test Report On Behalf of Shenzhen Yusu Technology Co., LTD For Karaoke Machine for Kids Model No.: KBS100-PU, series models see page 7 FCC ID: 2BRQM-KBS100 Prepared For: Shenzhen Yusu Technology Co., LTD Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, 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: Aug. 06, 2025 ~ Aug. 27 2025 Date of Report: Aug. 27 2025 Report Number: HK2508064334-E Page 2 of 48 Report No.: HK2508064334-E Test Result Certification Applicant’s Name .................. : Shenzhen Yusu Technology Co., LTD Address .................................. : Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China Manufacturer's Name ........... : Shenzhen Yusu Technology Co., LTD Address .................................. : Room 4105, Building 5, Vanke Tianyu Garden, No. 88, Xipu Road, Jixiang Community, Longcheng Subdistrict, Longgang District, Shenzhen City, China Product Description Trade Mark ............................. : N/A Product Name ........................... : Karaoke Machine for Kids Model and/or Type Reference...: KBS100-PU, series models see page 7 Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247, ANSI C63.10: 2020 KDB 558074 D01 15.247 Meas Guidance v05r02 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 ............ : Aug. 06, 2025 ~ Aug. 27 2025 Date of Issue ........................................... : Aug. 27 2025 Test Result ............................................... : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 48 Report No.: HK2508064334-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. AC 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 ............................................................................................................... 30 3.6. Number of Hopping Frequency ................................................................................................ 32 3.7. Time of Occupancy (Dwell Time) ............................................................................................. 34 3.8. Out‐of‐Band Emissions ............................................................................................................. 37 3.9. Pseudorandom Frequency Hopping Sequence ........................................................................ 44 3.10. Antenna Requirement .......................................................................................................... 45 4. Test Setup Photos of the EUT .............................................................................. 46 5. Photos of the EUT .......................................…

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Model No.: KBS100-PU Radiated Emission AC Conducted Emission RF Conducted Emission