2BGS8-BD-881ELECTRONIC KEYBOARD

CFR 47 §2.911(d)(5)(i)(ii) Attestation Letter QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD ADD: NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG, FUJIAN, CHINA TEL: +86-18065929518 FAX: N/A E-mail: [email protected] Attestation Letter Date: 2024-06-24 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i)(ii) Filing FCC ID: 2BGS8-BD-881 QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD certifies that the equipment for which authorization is soughtis not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. QUANZHOU BADU 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 an entity producing “covered” equipment. Sincerely, Signature Printed Name: Jimmy Lin Title: Manager

U.S. AGENT LETTER OF ATTESTATION Date: 2024-06-24 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2BGS8-BD-881 QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD accepts to maintain an agent for no less than one year after the gr antee has terminated all marketing and importation or the conclusion of any Commission- related proceeding involving the equipment. Iconsigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Applicant: QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD Address: NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG ,FUJIAN ,China FRN: 0035493394 Tel: +86-18065929518 Email: 53233356 [email protected] Signed by (printed name): Jimmy Lin Signature:

QA-FR-170-B QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD ADD: NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG, FUJIAN, CHINA TEL: +86-18065929518 FAX: N/A E-mail: [email protected] FCC Authorization Date: 2024-06-24 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD, Hereby authorizes Bay Area Compliance Laboratories Corp. (Xiamen) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Xiamen) on our behalf shall have the same effect as our own action. We, the undersigned, hereby 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. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Printed Name: Jimmy Lin Title: Manager

QA-FR-171-A QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD ADD: NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG, FUJIAN, CHINA TEL: +86-18065929518 FAX: N/A E-mail: [email protected] FCC Confidential Authorization Date: 2024-06-24 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2BGS8-BD-881 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Printed Name: Jimmy Lin Title: General Manager

QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD ADD: NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG, FUJIAN, CHINA TEL: +86-18065929518 FAX: N/A E-mail: [email protected] DECLARATION OF SIMILARITY Date: 2024-05-14 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD , hereby declare that the product: ELECTRONIC KEYBOARD,FCC ID:2BGS8-BD-881,model:BD-881, 883,886. All the models are the same electromagnetic emissions and electromagnetic compatibility characteristics, only the model name differently, because the market name is different, there is no other difference. Please contact me should there be need for any additional clarification or information. Best Regards, Signature: Printed Name: Jimmy Lin Title: Manager

Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-EXP Page 1 / 6 EUT EXTERNAL PHOTOS Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-EXP Page 2 / 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-EXP Page 3 / 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-EXP Page 4 / 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-EXP Page 5 / 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-EXP Page 6 / 6 ports

Products: ELECTRONIC KEYBOARD ITEM NO.: BD-881 IN PUT(Ad apt or): 5V===1A IN PUT( B attery) : 5V= ＝二 (1.5Vx4) ＠陀 QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD. Addr:N0.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG,FUJIAN,China FCC ID: 2BGS8-BD-881 MACE IN CHINA

Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 1 / 12 EUT INTERNAL PHOTOS Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 2 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 3 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 4 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 5 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 6 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 7 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 8 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 9 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 10 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 11 / 12 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-INP Page 12 / 12 Antenna

RF EXPOSURE REPORT For QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG, FUJIAN, China FCC ID: 2BGS8-BD-881 Report Type: Original Report Product Name: ELECTRONIC KEYBOARD Report Number: 2407T28020E-RF-03 Report Date: 2024-07-10 Reviewed By: Stein Peng Approved By: Miles Chen Prepared By: Bay Area Compliance Laboratories Corp. (Xiamen) Unit 102, No. 902 Meifeng South Road, Binhai West Avenue, Science and Technology Innovation Park, Torch High tech Zone XiaMen Tel: +86-592-3200111 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-03 Page 2 of 7 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 3 GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 RF EXPOSURE EVALUATION ................................................................................................................................. 5 EUT PHOTOGRAPHS ................................................................................................................................................. 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-03 Page 3 of 7 REPORT REVISION HISTORY Number of Revisions Report No. Version Issue Date Description 0 2407T28020E-RF-03 R1V1 2024-07-10 Initial Release Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-03 Page 4 of 7 GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product Name: ELECTRONIC KEYBOARD Tested Model: BD-881 Multiple Model(s): 883, 886 Power Supply: DC 5V from adapter or DC 6V from battery Maximum Output Power: GFSK:-3.33 dBm π/4-DQPSK:-2.52 dBm 8DPSK:-1.96 dBm BLE: -2.66dBm Operating Band/Frequency: 2402-2480 MHz Modulation Type: BT: GFSK, π/4-DQPSK, 8DPSK BLE:GFSK Antenna Type: PCB on-board ★Maximum Antenna Gain: 0.5 dBi EUT Received Status: Good Note: 1. The Maximum Antenna Gain was declared by manufacturer. 2. The model difference please refer to declaration letter. 3. All measurement and test data in this report was gathered from production sample serial number: 2LBU-1(Assigned by the BACL(Xiamen). The EUT supplied by the applicant was received on 2024-05-14) Test Facility The Test site used by Bay Area Compliance Laboratories Corp. (Xiamen) to collect test data is located on the Unit 102, No. 902 Meifeng South Road, Binhai West Avenue, Science and Technology Innovation Park, Torch High tech Zone XiaMen. Bay Area Compliance Laboratories Corp. (Xiamen) Lab is accredited to ISO/IEC 17025 by A2LA (Certificate Number: 7134.01) and the lab has been recognized as the FCC accredited lab under the KDB 974614 D01, the FCC Designation No. : CN1384. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-03 Page 5 of 7 RF EXPOSURE EVALUATION Applicable Standard According to§15.247(i) and §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission's guideline According to KDB447498 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 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 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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 according to 5) in section 4.1 is applied to determine SAR test exclusion. Measurement Result The max conducted power including tune-up tolerance is -1.5 dBm (0.71 mW). [(max. power of channel, mW)/(min. test separation distance, mm)][√f(GHz)] =0.71/5*(√2.480) = 0.22< 3.0 Result: Compliant. The stand-alone SAR evaluation is not necessary Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-03 Page 6 of 7 EUT PHOTOGRAPHS Please refer to the attachment 2407T28020E-RF-EXP EUT EXTERNAL PHOTOGRAPHS and 2407T28020E-RF-INP EUT INTERNAL PHOTOGRAPHS. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-03 Page 7 of 7 Declarations 1. Bay Area Compliance Laboratories Corp. (Xiamen) is not responsible for authenticity of any information provided by the applicant. Information from the applicant that may affect test results are marked with an asterisk “★”. 2. Unless otherwise stated, the results shown in this test report refer only to the sample(s) tested. 3. Unless required by the rule provided by the applicant or product regulations, then decision rule in this report did not consider the uncertainty. 4. The extended uncertainty given in this report is obtained by combining the standard uncertainty times the coverage factor k=2 with the 95.45% confidence interval. 5. This report cannot be reproduced except in full, without prior written approval of Bay Area Compliance Laboratories Corp. (Xiamen). 6. This report is valid only with a valid digital signature. The digital signature may be available only under the adobe software above version 7.0. ***** END OF REPORT *****

Model NameDRM-GF5B14C1(EMC) Antenna Gain0.5dBi Antenna TypePCB Antenna ManufactureTongda Technology（Shen Zhen）CO.,LTD Address 12th Floor, Building A, Colorful Science and Technology Innovation Park, Luhu Community, Guanhu Street, Longhua New District, Shenzhen,China Antenna Report 1.General Information 2.Antenna Dimension 3.Antenna Pattern

FCC PART 15.247 TEST REPORT For QUANZHOU BADU ELECTRONIC TECHNOLOGY CO., LTD NO.12, EAST ROAD, ANQIAN INDUSTRIAL, ANHAI TOWN, JINJIANG, FUJIAN, China FCC ID: 2BGS8-BD-881 Report Type: Original Report Product Name: ELECTRONIC KEYBOARD Report Number: 2407T28020E-RF-01 Report Date: 2024-07-10 Reviewed By: Stein Peng Approves By: Miles Chen Prepared By: Bay Ar ea Compliance Laboratories Corp. (Xiamen) Unit 102, No. 902 Meifeng South Road, Binhai West Avenue, Science and Technology Innovation Park, Torch High tech Zone XiaMen Tel: +86-592-3200111 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-01 FCC Part 15.247 Page 2 of 86 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 6 TEST FACILITY ............................................................................................................................................................. 6 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 TEST MODE AND VOLTAGE .......................................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 ★EUT EXERCISE SOFTWARE ...................................................................................................................................... 7 SPECIAL ACCESSORIES ................................................................................................................................................. 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 8 EXTERNAL I/O CABLE .................................................................................................................................................. 8 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................. 10 TEST EQUIPMENT LIST ......................................................................................................................................... 11 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 12 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 TEST SYSTEM SETUP .................................................................................................................................................. 13 EMI TEST RECEIVER SETUP ....................................................................................................................................... 13 TEST PROCEDURE ...................................................................................................................................................... 13 LEVEL &MARGIN CALCULATION ............................................................................................................................... 14 TEST DATA ................................................................................................................................................................ 15 FCC §15.205, §15.209 & §15.247(d) – RADIATED EMISSIONS ........................................................................... 17 APPLICABLE STANDARD ............................................................................................................................................ 17 TEST SYSTEM SETUP .................................................................................................................................................. 17 EMI TEST RECEIVER SETUP ....................................................................................................................................... 18 TEST PROCEDURE ...................................................................................................................................................... 19 LEVEL &MARGIN CALCULATION .............…

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Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-TSP Page 1 / 5 EUT SETUP PHOTOS CE-Front View CE-Rear View Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-TSP Page 2 / 5 RE View(9kHz~30MHz) RE-Front View(30MHz~1GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-TSP Page 3 / 5 RE-Rear View(30MHz~1GHz) RE-Front View(1 GHz -18 GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-TSP Page 4 / 5 RE-Rear View(1 GHz -18 GHz) RE-FrontView (18 GHz-25 GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2407T28020E-RF-TSP Page 5 / 5 RE-RearView (18 GHz-25 GHz) RF