2A5N7-BT601Speaker with Bluetooth

C5266091_X24_Ed.2 1/1 “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Dier Digital Audio(Longnan)Co., Ltd Grantee code: 2A5N7 FRN: 0032082190 FCC ID: 2A5N7-BT601 Contact Name: Liangping Liao Address: Information Industry Technology City, Longnan Economic Development Zone, Longnan, Ganzhou, Jiangxi Province, China Telephone No: 0086-755-89661216 Fax No: 0086-755-89663909 Email: [email protected] i. [Dier Digital Audio(Longnan)Co., Ltd] (“the applicant”) 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. The applicant must sign this certification. ii. [ Dier Digital Audio(Longnan)Co., Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. Dier Digital Audio(Longnan)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. Date: 08.23.2024 Applicant’s Name: Liangping Liao Title: Engineer Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

CFR47 §2.911(d)(7)AgentDesignationAttestation Date:08-21-2024 FCCID: 2A5N7-BT601FRN:0032082190 To:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD 21046 DierDigitalAudio(Longnan)Co., Ltd(“the applicant”) as requiredby section2.911(d)(7), designatesthe followingagent,locatedin the UnitedStates,for purposesof actingas the applicant’s agentfor serviceof process. The applicantacknowledgesthat they will maintainan agentfor no less thanone year afterthe granteehas terminatedall marketingand importationor the conclusionof any Commission- relatedproceedinginvolvingthe equipment.The applicantfurtheracknowledgestheir responsibilityto informthe FCCwheneverthe agentinformationchanges. U. S. AgentInformation: JamesHe OasisCompliance,Inc. 3313VerdiDr, San Jose,CA 95111 [email protected] cell:2026028330 Sincerelyyours, LiangpingLiao Manager Dier DigitalAudio(Longnan)Co., Ltd Address:InformationIndustryTechnologyCity,Longnan,longnanEconomicDevelopment Zone,Longnan,Ganzhou,JiangxiProvince,China Email:[email protected] Phone:+86 755-89661216

Dier Digital Audio(Longnan)Co., Ltd Product Similarity Declaration Product name: Speaker with Bluetooth Model name: BT601, BT602, BT603, RB580 FCC ID: 2A5N7-BT601 We (Dier Digital Audio(Longnan)Co., Ltd) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model name and color. Signature: Name: Liangping Liao Title: Engineer Date: 8.23.2024

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Dier Digital Audio(Longnan)Co., Ltd Address: Information Industry Technology City, Longnan Economic Development Zone, Longnan, Ganzhou, Jiangxi Province, China Product Name: Speaker with Bluetooth Model Number: BT601, BT602, BT603, RB580 FCC Identifier: 2A5N7-BT601 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Liangping Liao Date: 8/23/2024 Title: Engineer Signature of applicant:

C5266091_X10_Ed.2 1/1 Dier Digital Audio(Longnan)Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 8/23/2024 Subject: Request for Confidentiality FCC ID: 2A5N7-BT601 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of __ __ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Liangping Liao Title: Engineer

Page 1 of 3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the EUT (External Photos) Model: BT601 Page 2 of 3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 3 of 3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]

Page 1 of 5 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the EUT (Internal Photos) Model: BT601 Page 2 of 5 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] ANT Page 3 of 5 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 4 of 5 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 5 of 5 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]

Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) We b : http://www.mtitest.cn E-mail: [email protected] RF EXPOSURE Test Report Report No.: MTi240813022-01E2 Date of issue: 2024-08-21 Applicant: Dier Digital Audio (Longnan) Co., Ltd Product name: Speaker with Bluetooth Model(s): BT601, BT602, BT603, RB580 FCC ID: 2A5N7-BT601 Shenzhen Microtest Co., Ltd. http://www.mtitest.cn - Page 2 of 6- Report No.: MTi240813022-01E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) We b : http://www.mtitest.cn E-mail: [email protected] Instructions 1. The report shall not be partially reproduced without the written consent of the laboratory; 2. The test results of this report are only responsible for the samples submitted; 3. This report is invalid without the seal and signature of the laboratory; 4. This report is invalid if transferred, altered or tampered with in any form without authorization; 5. Any objection to this report shall be submitted to the laboratory within 15 days from the date of receipt of the report. - Page 3 of 6- Report No.: MTi240813022-01E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) We b : http://www.mtitest.cn E-mail: [email protected] TEST RESULT CERTIFICATION Applicant’s name ................. Dier Digital Audio (Longnan) Co., Ltd Address ............................... Information Industry Technology City, Longnan,longnan Economic Development Zone, Longnan,Ganzhou, Jiangxi Province, China Manufacturer's Name .......... Dier Digital Audio (Longnan) Co., Ltd Address ............................... Information Industry Technology City, Longnan,longnan Economic Development Zone, Longnan,Ganzhou, Jiangxi Province, China Factory's Name ................... Dier Digital Audio (Longnan) Co., Ltd Address ............................... Information Industry Technology City, Longnan,longnan Economic Development Zone, Longnan,Ganzhou, Jiangxi Province, China Product description Product name ......................... Speaker with Bluetooth Trademark .......................... N/A Model Name ....................... BT601 Serial Model ........................ BT602, BT603, RB580 Standards............................ N/A Test procedure .................... KDB 447498 D01 v06 Date of Test Date (s) of performance of tests............. : 2024-08 -19 to 2024-08 -21 Test Result ............................................. : Pass Test Engineer : (Maleah Deng) Reviewed By : (David Lee) Approved By : (Leon Chen) - Page 4 of 6- Report No.: MTi240813022-01E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) We b : http://www.mtitest.cn E-mail: [email protected] Table of Contents 1. STANDALONE SAR TEST EXCLUSION CONSIDERATIONS ............................................................................................ 5 2. SAR TEST EXCLUCSION THRESHOLDS ........................................................................................................................ 6 - Page 5 of 6- Report No.: MTi240813022-01E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) We b : http://www.mtitest.cn E-mail: [email protected] 1. Standalone SAR test exclusion considerations 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. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions. a) 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 res…

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Summary Inverted F Antenna Specification ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2450MHz2500MHz 2400MHz 2450MHz2500MHz -1.26-0.76-0.58-6.71-4.15-2.44 MAX. Gain -0.58dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD No. 333, Kexing Road, Xiangzhou District, Zhuhai City, Guangdong Province, China Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Max: 0dBi Min: -40dBi Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 -1.26-30.08-7.18 2450 -0.76-36.56-7.48 2500 -0.58-22.03-6.59 Vertical: 2400 MHz 2450 MHz 2500 MHz Max: 0dBi Min: -30dBi Scale: 5/div Frequency (MHz) Gain（dBi） Max Min Avg 2400 -6.71-22.14-12.42 2450 -2.44 -24.58-10.47 2500 -29.52-9.204 ANT Test Labs：Attestation of Global Compliance Co., Ltd. -4.15

Page 1 of 3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the test setup Model: BT601 Conducted Emission at AC power line Radiated emissions (below 1GHz) Page 2 of 3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Radiated emissions (above 1GHz) Page 3 of 3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]