2BTPM-JLCHPJ88DDigital Piano

Dongguan shijulvtemaoyi Co., Ltd. Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Jan. 4, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BTPM-JLCHPJ88D Dongguan shijulvtemaoyi Co., Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name: Baoyu Zuo Title: CEO Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China Tel.: 13711935581 Email: [email protected]

Dongguan shijulvtemaoyi Co., Ltd. Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Dec. 30, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: [2BTPM-JLCHPJ88D] Product Name: [Digital Piano] This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name: Digital Piano Title: CEO Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China Tel.: 13711935581 Email: [email protected] Dongguan shijulvtemaoyi Co., Ltd. Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

DongguanshijulvtemaoyiCo.,Ltd. Address:Room106,No.25,ChangfuRoad,Changshantou,QingxiTown,DongguanCity, GuangdongProvince,China ReferenceNo.2025UD0158 U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Dec.31,25 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID:2BTPM-JLCHPJ88D [DongguanshijulvtemaoyiCo.,Ltd.](“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,[TTSMARKETINC.](“theagent”)isourdesignatedU.S.agentforserviceofprocess fortheabovereferenceFCCID.Theapplicantacceptstomaintainanagentforserviceofprocess intheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,ortheconclusionofany Commission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. TheapplicantfurtheracknowledgesitisourresponsibilitytoinformtheFCCwhenevertheagent informationchanges. [TTSMARKETINC.]("theagent”)understanditistheagent'sobligationtoacceptserviceof processintheUnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddress. DesignatedU.S.Agent CompanyName:TTSMARKETINC. FRN:0036806057 GC:N/A Address:1178BroadwaySte324,NewYork,NY 10001.USA Signature: ContactPerson:MaverickLim Tel:001-(646)305-2908Email:[email protected] Applicant CompanyName:DongguanshijulvtemaoyiCo.,Ltd. FRN:0037755766 Address:Room106,No.25,ChangfuRoad, Changshantou,QingxiTown,DongguanCity, GuangdongProvince,China Signature: ContactPerson:BaoyuZuo Tel:13711935581Email:[email protected]

Dongguan shijulvtemaoyi Co., Ltd. Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China (Dec. 30, 2025) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BTPM-JLCHPJ88D Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below : ⎯ Block Diagram ⎯ Schematics ⎯ Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Pursuant to DA 04-1705, the applicant also requests temporary confidential treatment of the exhibits outlined below for a period of (up to 180) days from the date of equipment authorization and prior to marketing in the United States to prevent the premature release of any sensitive information. Applicant is aware of their responsibility to notify DERYCOM in the event information regarding the product or the product is made available to the public before the requested period has expired. ⎯ User Manual Sincerely, (Signature) Title: CEO Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China Tel.: 13711935581 Email: [email protected]

Dongguan shijulvtemaoyi Co., Ltd. Address: Room 106, No.25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China (Dec. 30, 2025) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BTPM-JLCHPJ88D I, the undersigned, hereby authorize (Shenzhen BKC Testing Co., Ltd.) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (Shenzhen BKC Testing Co., Ltd.) shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with (Dongguan shijulvtemaoyi Co., Ltd.). We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, (Signature) (Full name of contact person listed on FCC’s website) Baoyu Zuo (Title): CEO Tel: 13711935581 Fax: / Email: [email protected]

Report No.: BKC25125290ME-3 External Photos Model: JLCHPJ88D Report No.: BKC25125290ME-3 Report No.: BKC25125290ME-3 Report No.: BKC25125290ME-3

Report No.: BKC25125290ME-4 Internal Photos Model: JLCHPJ88D Report No.: BKC25125290ME-4 Antenna Report No.: BKC25125290ME-4

FCC ID: 2BTPM-JLCHPJ88D RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093， 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. 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, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, So a SAR test is not required Mode Frequen cy (MHz) Max Power (dBm) Target power W/ tolerance (dBm) Max tune up power tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit BT GFSK 2402 0.58 0.0±1 1.0 1.2589 5.00 0.3902 3.0 2440 -0.01 0.0±1 1.0 1.2589 5.00 0.3933 3.0 2480 -0.65 0.0±1 1.0 1.2589 5.00 0.3965 3.0 Π/4-D QPSK 2402 2.94 2.0±1 3.0 1.9953 5.00 0.6185 3.0 2440 2.32 2.0±1 3.0 1.9953 5.00 0.6233 3.0 2480 1.68 2.0±1 3.0 1.9953 5.00 0.6284 3.0 8DPS K 2402 3.48 3.0±1 4.0 2.5119 5.00 0.7786 3.0 2440 2.90 3.0±1 4.0 2.5119 5.00 0.7847 3.0 2480 2.28 3.0±1 4.0 2.5119 5.00 0.7911 3.0 BLE GFSK 2402 0.57 0.0±1 1.0 1.2589 5.00 0.3902 3.0 2440 0.00 0.0±1 1.0 1.2589 5.00 0.3933 3.0 2480 -0.62 0.0±1 1.0 1.2589 5.00 0.3965 3.0

V . S .W . R < 1.4 Polarization Type V ertical & Horizontal Frequenc Range2400 ~ 2500GHz Input Impendence(ohm) 50 E fficiency (dB) 6 6 0.2 %-3.61.91.2 Maximum Power (dBm) Gain (dBi) Peak EIRP(dBm)1.2 Tot. Rad. Pwr. (dBm)-1.2 (Input pwr – loss pwr) Produ ct specification Q uick Reference Date Antenna module on the system board Ant. Port Input Pwr. (dBm)0 (Typ. BT class 2 output power) Directivity (dBi)1 (all direction antenna) Minimum Power (dBm) Avg. Power (dBm) 0 .2 % 1.9 (Peak Gain XZ-plane) 1.7 (XY-plane) -4(XY-plane) -0.5(XY-plane) All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Unit in dBi @2.44GH zXY-planeXZ-planeYZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board -0.51.1-3.0 Return Loss The Environment of Antenna Radiation Pattern 3D radiation pattern diagram XY-planeXZ-planeYZ-plane

FCC ID_EDR (Part15.247) Test Data Report No.: BKC25125290ME-1 FCC ID: 2BTPM-JLCHPJ88D Table of Contents 1. Duty Cycle ................................................................................................................................................................... 2 2. -20dB Bandwidth ........................................................................................................................................................ 7 3. 99% Occupied Bandwidth ........................................................................................................................................ 12 4. Peak Output Power................................................................................................................................................... 17 5. Spurious Emissions ................................................................................................................................................... 22 6. Bandedge .................................................................................................................................................................. 31 7. Carrier Frequencies Separation (Hopping) ............................................................................................................... 44 8. Number of Hopping Channel (Hopping) ................................................................................................................... 49 9. Dwell Time (Hopping) ............................................................................................................................................... 51 Page 2 of 59 1. Duty Cycle Condition Antenna Rate Frequency (MHz) Dutycycle(%) Duty_factor NVNT ANT1 1-DH1 2402.00 33.33 4.77 NVNT ANT1 1-DH1 2441.00 34.92 4.57 NVNT ANT1 1-DH1 2480.00 33.33 4.77 NVNT ANT1 2-DH1 2402.00 34.92 4.57 NVNT ANT1 2-DH1 2441.00 34.92 4.57 NVNT ANT1 2-DH1 2480.00 34.92 4.57 NVNT ANT1 3-DH1 2402.00 34.92 4.57 NVNT ANT1 3-DH1 2441.00 33.87 4.70 NVNT ANT1 3-DH1 2480.00 36.51 4.38 Duty_Cycle_NVNT_ANT1_1-DH1_2402 Duty_Cycle_NVNT_ANT1_1-DH1_2441 Page 3 of 59 Duty_Cycle_NVNT_ANT1_1-DH1_2480 Duty_Cycle_NVNT_ANT1_2-DH1_2402 Page 4 of 59 Duty_Cycle_NVNT_ANT1_2-DH1_2441 Duty_Cycle_NVNT_ANT1_2-DH1_2480 Page 5 of 59 Duty_Cycle_NVNT_ANT1_3-DH1_2402 Duty_Cycle_NVNT_ANT1_3-DH1_2441 Page 6 of 59 Duty_Cycle_NVNT_ANT1_3-DH1_2480 Page 7 of 59 2. -20dB Bandwidth Condition Antenna Modulation Frequency (MHz) -20dB BW(MHz) if larger than CFS NVNT ANT1 1-DH1 2402.00 0.866 No NVNT ANT1 1-DH1 2441.00 0.874 No NVNT ANT1 1-DH1 2480.00 0.874 No NVNT ANT1 2-DH1 2402.00 1.273 Yes NVNT ANT1 2-DH1 2441.00 1.272 Yes NVNT ANT1 2-DH1 2480.00 1.270 Yes NVNT ANT1 3-DH1 2402.00 1.248 Yes NVNT ANT1 3-DH1 2441.00 1.243 Yes NVNT ANT1 3-DH1 2480.00 1.252 Yes -20dB_Bandwidth_NVNT_ANT1_1-DH1_2402_00 -20dB_Bandwidth_NVNT_ANT1_1-DH1_2441_00 Page 8 of 59 -20dB_Bandwidth_NVNT_ANT1_1-DH1_2480_00 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2402_00 Page 9 of 59 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2441_00 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2480_00 Page 10 of 59 -20dB_Bandwidth_NVNT_ANT1_3-DH1_2402_00 -20dB_Bandwidth_NVNT_ANT1_3-DH1_2441_00 Page 11 of 59 -20dB_Bandwidth_NVNT_ANT1_3-DH1_2480_00 Page 12 of 59 3. 99% Occupied Bandwidth Condition Antenna Modulation Frequency (MHz) 99%%BW(MHz) NVNT ANT1 1-DH1 2402.00 0.810 NVNT ANT1 1-DH1 2441.00 0.810 NVNT ANT1 1-DH1 2480.00 0.811 NVNT ANT1 2-DH1 2402.00 1.167 NVNT ANT1 2-DH1 2441.00 1.168 NVNT ANT1 2-DH1 2480.00 1.168 NVNT ANT1 3-DH1 2402.00 1.151 NVNT ANT1 3-DH1 2441.00 1.151 NVNT ANT1 3-DH1 2480.00 1.151 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2402_00 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2441_00 Page 13 of 59 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2480_00 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2402_00 Page 14 of 59 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2441_00 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2480_00 Page 15 of 59 99%_Occupied_Bandwidth_NVNT_ANT1_3-DH1_2402_00 99%_Occupied_Bandwidth_NVNT_ANT1_3-DH1_2441_00 Page 16 of 59 99%_Occupied_Bandwidth_NVNT_ANT1_3-DH1_2480_00 Page 17 of 59 4. Peak Output Power Condition Antenna Modulation Frequency (MHz) Max. Conducted Power(dBm) Max. Conducted Power(mW) Limit(mW) Result NVNT ANT1 1-DH1 2402.00 0.58 1.14 1000 Pass NVNT ANT1 1-DH1 2441.00 -0.01 1.00 1000 Pass NVNT ANT1 1-DH1 2480.00 -0.65 0.86 1000 Pass NVNT ANT1 2-DH1 2402.00 2.94 1.97 125 Pass NVNT ANT1 2-DH1 2441.00 2.32 1.71 125 Pass NVNT ANT1 2-DH1 2480.00 1.68 1.47 125 Pass NVNT ANT1 3-DH1 2402.00 3.48 2.23 125 Pass NVNT ANT1 3-DH1 2441.00 2.90 1.95 125 Pass NVNT ANT1 3-DH1 2480.00 2.28 1.69 125 Pass Peak_Output_Power_NVNT_ANT1_1-DH1_2402_00 Peak_Output_Power_NVNT_ANT1_1-DH1_2441_00 Page 18 of 59 Peak_Output_Power_NVNT_ANT1_1-DH1_2480_00 Peak_Output_Power_NVNT_ANT1_2-DH1_2402_00 Page 19 of 59 Peak_Output_Power_NVNT_ANT1_2-DH1_2441_00 Peak_Output_Power_NVNT_ANT1_2-DH1_2480_00 Page 20 of 59 Peak_Output_Power_NVNT_ANT1_3-DH1_2402_00 Peak_Output_Power_NVNT_ANT1_3-DH1_2441_00 Page 21 of 59 Peak_Output_Power_NVNT_ANT1_3-DH1_2480_00 Page 22 of 59 5. Spurious Emissions Condition Antenna Modulation TX Mode Ref_level(dBm) Spurious MAX.Value(dBm) Limit Result NVNT ANT1 1-DH1 2402.00 0.505 -32.505 -19.495 Pass NVNT ANT1 1-DH1 2441.00 -0.109 -29.102 -20.109 Pass NVNT ANT1 1-DH1 2480.00 -0.756 -39.553 -20.756 Pass NVNT ANT1 2-DH1 2402.00 0.472 -32.357 -19.528 Pass NVNT ANT1 2-DH1 2441.00 -0.138 -37.877 -20.138 Pass NVNT ANT1 2-DH1 2480.00 -0.719 -39.399 -20.719 Pass NVNT ANT1 3-DH1 2402.00 0.501 -32.722 -19.499 Pass NVNT ANT1 3-DH1 2441.00 -0.078 -35.545 -20.078 Pass NVNT ANT1 3-DH1 2480.00 -0.657 -45.535 -20.657 Pass 1_Reference_Level_NVNT_ANT1_1-DH1_2402_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2402_00 Page 23 of 59 1_Reference_Level_NVNT_ANT1_1-DH1_2441_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2441_00 Page 24 of 59 1_Reference_Level_NVNT_ANT1_1-DH1_2480_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2480_00 Page 25 of 59 1_Reference_Level_NVNT_ANT1_2-DH1_2402_00 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2…

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ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC25125290ME-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage1of29 TESTREPORT Applicant:DongguanshijulvtemaoyiCo.,Ltd. Address: Room106,No.25,ChangfuRoad,Changshantou,QingxiTown, DongguanCity,GuangdongProvince,China Manufacturer: DongguanshijulvtemaoyiCo.,Ltd. Address: Room106,No.25,ChangfuRoad,Changshantou,QingxiTown, DongguanCity,GuangdongProvince,China ProductName:DigitalPiano ModelNumber:SeeSection1.1fordetails Trademark:JLCH/TEKUAI FCCID:2BTPM-JLCHPJ88D TestDate: Dec.03,2025–Dec.18,2025 DateofReport: Dec.18,2025 TestResult: ThisdevicedescribedabovehasbeentestedbyBKC,andthetest resultsshowthattheequipmentundertest(EUT)isincompliance withtheStandardrequirements.Anditisapplicableonlytothetested sampleidentifiedinthereport. TestProcedureUsed: Standards:FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10:2020 RSS-247Issue3August2023 RSS-GenIssue5,Amendment2(February2021) Preparedby(TestEngineer): CareyZheng Reviewer(Supervisor): CaseyWang Approved(Manager): JerryLiao ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC25125290ME-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage2of29 TABLEOFCONTENT 1.GeneralInformation......................................................................................5 1.1.DescriptionofDevice(EUT).......................................................................................................................5 1.2.ChannelList..................................................................................................................................................5 1.3.Summaryoftestresult................................................................................................................................6 1.4.SpecialAccessoriesandAuxiliaryEquipment........................................................................................6 1.5.Testmode......................................................................................................................................................6 1.6.BlockDiagram...............................................................................................................................................7 1.7.TestConditions.............................................................................................................................................7 1.8.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................7 1.9.TestFacility....................................................................................................................................................8 1.10.TestEquipment...........................................................................................................................................8 2.Conductedemissionatthemainsterminalstest....................................10 2.1.Limit..............................................................................................................................................................10 2.2.TestSetup....................................................................................................................................................10 2.3.TestProcedure............................................................................................................................................10 2.4.TestResult...................................................................................................................................................11 3.RadiatedSpuriousEmissions...................................................................13 3.1.Limit..............................................................................................................................................................13 3.2.TestSetup....................................................................................................................................................14 3.3.TestProcedure............................................................................................................................................16 3.4.TestResult...................................................................................................................................................17 4.MaximumPeakOutputPower....................................................................22 4.1.Limit..............................................................................................................................................................22 4.2.TestSetup....................................................................................................................................................22 4.3.TestProcedure............................................................................................................................................22 4.4.TestResult...................................................................................................................................................22 5.-20dBBandwidthMeasurement...............................................................23 5.1.Limit..............................................................................................................................................................23 5.2.TestSetup....................................................................................................................................................23 5.3.TestProcedure............................................................................................................................................23 5.4.TestResult...................................................................................................................................................23 6.CarrierFrequencySeparationTest...........................................................24 6.1.Limit...........................................................................…

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Report No.: BKC25125290ME-2 EUT TEST PHOTO Model: JLCHPJ88D Report No.: BKC25125290ME-2