2BAIX-ACE970Electronic drum

Rev 1/26/2023 (NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07‐16‐2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BAIX‐ACE970 NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Lili / head engineer NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Rev 1/26/2023 (NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07‐16‐2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BAIX‐ACE970 NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Lili / head engineer NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.

NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. No. 335, Jingu Middle Road, Yinzhou District Ningbo, zhejiang, 315101 China Date: 2024.7.09 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BAIX-ACE970 FRN: 0033522863 US Agent – Attestation Statement / Part 2.911(d)(7) NINGBO KI NLIN ELECTRONIC TECHNOLOGY CO., LTD.certifies, that as of July09, 2024, we have designated FCC US Agent, LLC to accept service of process on our behalf for FCC ID: 2BAIX-ACE970 NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.accepts to maintain an agent of 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. FCC US Agent, LLC, accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. for FCC ID: 2BAIX-ACE970 Designated Agent Information: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Phone: 708-571-3148 Email: [email protected] Sincerely, Company: NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Designated Agent: FCC US Agent, LLC Company Representative:Li li Designated Agent Representative: Tim Payne Signature: Signature:

( NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2BAIX-ACE970 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram .pdf, Schematics .pdf , Operation Description .pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Short-term confidentiality requested: 180 days Exhibit Type File Name Internal Photos, Test Setup Photos, User Manual Internal Photos .pdf, Test Setup Photos .pdf, User Manual .pdf Sincerely, Li li/head engineer NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.

Difference Statement Model：ACE-970, ACE-1719 The two models differ only in exterior color. The schematic design, PCB Layout, etc. are the same. July 16, 2024 Lili / head engineer NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.

(NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: July 16, 2024 SUBJECT: FCC Application for FCC ID: 2BAIX-ACE970 To Whom It May Concern: We, the undersigned, hereby authorize Tony Wei at EMTEK(NINGBO) CO., LTD. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by EMTEK(NINGBO) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Lili / head engineer NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD.

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Label and Label Location PEODUCT: Electronic drum Model：ACE-970 FCC ID: 2BAIX-ACE970

FCC ID: 2BAIX-ACE970 RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 11.1 Friis transmission formula: Pd= (Pout*G)\ (4*pi*R 2 ) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in mW G= Numeric gain of the antenna relative to isotropic antenna Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE,1mW/cm 2 . If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. mW = 10^( dBm/10) 11.2 Measurement Result Operation Frequency: 2402MHz-2480MHz; Antenna gain: 1.76 dBi; R=20cm Chann el Freq. (MHz) modulati on Measure d power (dBm) Tune-up power (dBm) Max tune-up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2) Power density Limits (mW/cm2 ) 2402 GFSK -1.14 -2±1 -1 1.50 0.000236990 1 2441 -1.07 -2±1 -1 1.50 0.000236990 1 2480 -1.87 -2±1 -1 1.50 0.000236990 1 2402 pi/4- DQPSK -1.12 -2±1 -1 1.50 0.000236990 1 2441 -1.09 -2±1 -1 1.50 0.000236990 1 2480 -1.91 -2±1 -1 1.50 0.000236990 1 2402 8DPSK -0.76 -1±1 0 1.50 0.000298352 1 2441 -0.70 -1±1 0 1.50 0.000298352 1 2480 -1.64 -2±1 -1 1.50 0.000236990 1 *** End of Report ***

Report No.: BL-SZ2470453-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 13 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China TEST REPORT Applicant: NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Address: No. 335, Jingu Middle Road, Yinzhou District, Ningbo, China Equipment Type: Electronic drum Model Name: ACE-970, ACE-1719 Brand Name: N/A Test Standard: IEEE Std 149-2021 Sample Arrival Date: Jul. 08, 2024 Test Date: Jul. 09, 2024 Date of Issue: Jul. 12, 2024 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Mai Jintian Checked by: Xia Long Approved by: Tolan Tu (Testing Director) _______________ _______________ _______________ Report No.: BL-SZ2470453-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 13 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Revision History Version Issue Date Revisions Rev. 01 Jul. 12, 2024 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ......................................................................................................... 3 1.1 Test Laboratory ..................................................................................................................... 3 1.2 Test Location ......................................................................................................................... 3 2 PRODUCT INFORMATION ......................................................................................................... 4 2.1 Applicant Information ............................................................................................................ 4 2.2 Manufacturer Information ...................................................................................................... 4 2.3 General Description for Equipment under Test (EUT) .......................................................... 4 2.4 Ancillary Equipment .............................................................................................................. 4 3 SUMMARY OF TEST RESULTS ................................................................................................. 5 3.1 Test Standards ...................................................................................................................... 5 3.2 Test Verdict ........................................................................................................................... 5 3.3 Test Uncertainty .................................................................................................................... 5 4 GENERAL TEST CONFIGURATIONS ........................................................................................ 6 4.1 Test Condition ....................................................................................................................... 6 4.2 Test Equipment List .............................................................................................................. 6 4.3 Test Setup ............................................................................................................................. 7 4.4 Test Frequencies .................................................................................................................. 7 ANNEX A TEST RESULTS ............................................................................................................. 8 A.1 Gain and Efficiency ............................................................................................................... 8 A.2 VSWR ................................................................................................................................... 8 ANNEX B RADIATION PATTERN .................................................................................................. 9 ANNEX C TEST SETUP PHOTOS ............................................................................................... 12 ANNEX D EUT PHOTO ................................................................................................................ 12 Report No.: BL-SZ2470453-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 13 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1 GENERAL INFORMATION 1.1 Test Laboratory Name Shenzhen BALUN Technology Co., Ltd. Address Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Phone Number +86 755 6685 0100 1.2 Test Location Name Shenzhen BALUN Technology Co., Ltd. Location Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park, No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ2470453-901 Tel: +86-755-66850100 E-mail: [email protected] Page No. 4 / 13 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-09-07) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 2 PRODUCT INFORMATION 2.1 Applicant Information Applicant NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Address No. 335, Jingu Middle Road, Yinzhou District, Ningbo, China Contact Person Li Li Email Address [email protected] 2.2 Manufacturer Information Manufacturer N/A Address N/A 2.3 General Description for Equipment under Test (EUT) EUT Name Electronic drum Model Name Under Test ACE-970, ACE-1719 Antenna Type PCB Antenna Dimensions 19*5 mm 2.4 Ancillary Equipment Note: Not applicable. Report No.: BL-S…

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Report No. ENB2405310209W00201R Page 1 of 65 Ver.1.0 TEST REPORT $二维码$ Product Name : Electronic drum Model Number : ACE-970, ACE-1719 FCC ID : 2BAIX-ACE970 Prepared for : NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Address : No. 335, Jingu Middle Road, Yinzhou District, Ningbo, China Prepared by : EMTEK (NINGBO) CO., LTD. Address : No. 8, Building 8, Lane 216, Qingyi Road, Ningbo Hi-Tech Zone, Ningbo, Zhejiang, China Tel: +86-574-27907998 Fax: +86-574-27721538 Report Number : ENB2405310209W00201R Date(s) of Tests : May 31, 2024 to June 27, 2024 Date of issue : July 05, 2024 Report No. ENB2405310209W00201R Page 2 of 65 Ver.1.0 Table of Contents 1 TEST RESULT CERTIFICATION ............................................................................................................ 3 2 EUT TECHNICAL DESCRIPTION .......................................................................................................... 5 3 SUMMARY OF TEST RESULT ............................................................................................................... 6 4 TEST METHODOLOGY .......................................................................................................................... 7 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS ....................................................................... 7 4.2 MEASUREMENT EQUIPMENT USED .................................................................................................. 7 4.3 DESCRIPTION OF TEST MODES ........................................................................................................ 9 4.4 TEST SOFTWARE ................................................................................................................................ 9 5 FACILITIES AND ACCREDITATIONS ................................................................................................. 10 5.1 FACILITIES .......................................................................................................................................... 10 5.2 LABORATORY ACCREDITATIONS AND LISTINGS ........................................................................... 10 6 TEST SYSTEM UNCERTAINTY ........................................................................................................... 11 7 SETUP OF EQUIPMENT UNDER TEST ............................................................................................... 12 7.1 RADIO FREQUENCY TEST SETUP 1 ................................................................................................ 12 7.2 RADIO FREQUENCY TEST SETUP 2 ................................................................................................ 12 7.3 CONDUCTED EMISSION TEST SETUP ............................................................................................ 14 7.4 SUPPORT EQUIPMENT ..................................................................................................................... 14 8 FREQUENCY HOPPING SYSTEM REQUIREMENTS ......................................................................... 15 8.1 STANDARD APPLICABLE .......................................................................................................................... 15 8.2 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ........................................................................ 15 8.3 EQUAL HOPPING FREQUENCY USE ......................................................................................................... 16 8.4 FREQUENCY HOPPING SYSTEM .............................................................................................................. 16 9 TEST REQUIREMENTS ........................................................................................................................ 17 9.1 20DB BANDWIDTH ............................................................................................................................. 17 9.2 CARRIER FREQUENCY SEPARATION ............................................................................................. 23 9.3 NUMBER OF HOPPING FREQUENCIES ........................................................................................... 29 9.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ............................................................................ 31 9.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER ........................................................................... 34 9.6 CONDUCTED SUPRIOUS EMISSION ............................................................................................... 40 9.7 RADIATED SPURIOUS EMISSION ..................................................................................................... 47 9.8 CONDUCTED EMISSION TEST ......................................................................................................... 61 9.9 ANTENNA APPLICATION ................................................................................................................... 64 Report No. ENB2405310209W00201R Page 3 of 65 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Address : No. 335, Jingu Middle Road, Yinzhou District, Ningbo, China Manufacturer : NINGBO KINLIN ELECTRONIC TECHNOLOGY CO., LTD. Address : No. 335, Jingu Middle Road, Yinzhou District, Ningbo, China EUT : Electronic drum Model Name : ACE-970, ACE-1719 Trademark : N/A Measurement Procedure Used: APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C PASS The above equipment was tested by EMTEK (NINGBO) CO., LTD.The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2013) and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 2 and Part 15.247. The test results of this report relate only to the tested sample identified in this report.…

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