2BWL4-S5120QSWWireless Subwoofer

Bef ore using the soundbar, please read this manual thoroughly and retain it for future ref er ence. USER MANUAL Model: S5120Q 5.1.2CH Soundbar with Wir eless Subwoofer 2 Contents 1.Important Safety Instructions ................................................................................................................................ .................................................................................................................... .................................................................................................................................................. 3 1.1Safety....................................................................................................................................................................3 1.2Caution..................................................................................................................................................................4 1.3Warning................................................................................................................................................................. ......................................................................................................................................................... 4 2.What’s in the Box5 3.Identifying the Parts6 3.1Soundbar ............................................................................................................................................................... ................................................................................................................................................................. 6 3.2Wireless Subwoofer.............................................................................................................................................. ........................................................................................................................................ 7 3.3Remote Control.....................................................................................................................................................7 3.4Prepare the Remote Control7 3.5Replace the Remote Control Battery ................................................................................................................................. 7 4.Placement and Mounting8 4.1Placement..............................................................................................................................................................8 4.2Wall Mounting the Soundbar................................................................................................................................8 5.Connections9 5.1Use the HDMI Socket ............................................................................................................................................. .................................................................................................................................... 9 5.2 5.3 Use the AUX Socket ............................................................................................................................................... ........................................................................................................................................... 11 Connect Power......................................................................................................................................................11 6.Pair up with the Subwoofer 12 7.Control Via ConnectLife12 12 ................................................................................................................................................. Select Equalizer (EQ) Effect ....................................................................................................................................................... ............................................................................................................................................... 9.Basic Operation12 9.1Standby/ON............................................................................................................................................................12 9.2Auto-Standby / Auto-Wake Feature......................................................................................................................13 9.3Select Modes..........................................................................................................................................................13 9.4Adjust the Volume.................................................................................................................................................13 9.5Select Surround Sound Mode..............................................................................................................................13 9.6Adjust the Bass/Treble..........................................................................................................................................13 9.7....................................................................................................................................13 9.8Select a sound mode.............................................................................................................................................13 9.9Level (LVL) control .................................................................................................................................................13 9.10 Set the Audio Delay13 9.11 Setup Menu........................................................................................................................................................... .............................................................................................................................................. 14 10.AUX / HDMI Operation14 11.USB Operation14 12.Bluetooth® Operation15 13.Troubleshooting Specifications Trademarks 16 15.18 14.17 8.Connect to W…

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Eastech (Huizhou) Co., Ltd Covered Equipment Certification Attestation Letter 8/20/2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2BWL4-S5120QSW Eastech (Huizhou) 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. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Eastech (Huizhou) 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 as an entity producing “covered” equipment. Signed: Printed name: Chunming Ma Title: Manager Company Name: Eastech (Huizhou) Co., Ltd Date: 8/20/2026

Eastech (Huizhou) Co., Ltd * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 8/20/2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2BWL4-S5120QSW FRN of applicant: 0038534756 Per section 2.911(d)(7) of the FCC rules, Eastech (Huizhou) Co., Ltd (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: Hisense USA Multimedia R&D Center Inc. FCC Registration Number (FRN): 0033725060 Physical U.S. Company Address: 7310 McGinnis Ferry RD, Suwanee, GA 30024, United States Contact Person: Shuang Guan Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed (if different from Applicant): Signed: Signed: Printed name: Chunming Ma Printed name: Shuang Guan Title: Manager Title: Director Company Name: Eastech (Huizhou) Co., Ltd Company Name: Hisense USA Multimedia R&D Center Inc. Date: 8/20/2026 Date: 8/20/2026

Eastech (Huizhou) Co., Ltd August 24, 2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: 2BWL4-S5120QSW Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of insert number of days (cannot exceed 180 days) days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☐ Short Term Internal Photos ☐ Permanent* ☐ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☐ Short Term User’s Manual ☐ Permanent* ☐ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Chunming Ma Title: Manager Company Name: Eastech (Huizhou) Co., Ltd

Eastech (Huizhou) Co., Ltd I, the undersigned, Chunming Ma: The following models have the same technical construction including circuit diagram, PCB Layout, components and component layout, all electrical construction and mechanical construction, except the different model number, appearance color and trade mark. Model Number: S5120Q Series Model: S5120R, S5120S, S5120QW, S5121Q, S5121R, S5121S, S512Q, S512LQ, S512S, S512LS, S512R, S512LR, S8Q, S8LQ, S8R, S8LR, SL80Q, SL81Q, SL80R, SL81R, T8, T8Q, T8R, T8S, A3120Q, A7140Q, S7140Q, S7140QW, S7140S, S7140SW, S70, S700, S71, S701, S5120DE, S5120WDE, A5120S, A5120SW, RA-B770, RA-B770F, T80QW, T5120Q FCC ID: 2BWL4-S5120QSW Sincerely, Client’s signature : Client’s name / title : Chunming Ma / Manager Contact information / address : BLD 6, Meilonghu (Phase II), Xinxu, Huiyang, Huizhou 516000, China Telephone: +86 13829996501 Fax No.: +86 13829996501 Date: 8/24/2026

External Photos M/N: S5120Q External Photos M/N: S5120Q External Photos M/N: S5120Q External Photos M/N: S5120Q

Model / Modèle / Modelo: S5120Q Wireless Subwoofer / Caisson de Basses sans fil / Subwoofer Inalámbrico AC 100-240 V~ 50/60 Hz 20 W CAN ICES (B) / NMB (B) FCC ID:2BWL4-S5120QSW HVIN:S5120QSW IC:35763-S5120QSW Made in China / Hecho en China / Fabriqué en Chine / This device complies with Part 15 of the FCC Rules and Indus- try Canada's licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Label Location

Internal Photos M/N: S5120Q Internal Photos M/N: S5120Q Internal Photos M/N: S5120Q 5.8G SRD TX Antenna 5.8G SRD RX Antenna

Page 1 of 4 Report No. ESTE-R2607323 FCC 47 CFR MPE REPORT Eastech (Huizhou) Co., Ltd Wireless Subwoofer Model Number: S5120Q Additional Model: S5120R, S5120S, S5120QW, S5121Q, S5121R, S5121S, S512Q, S512LQ, S512S, S512LS, S512R, S512LR, S8Q, S8LQ, S8R, S8LR, SL80Q, SL81Q, SL80R, SL81R, T8, T8Q, T8R, T8S, A3120Q, A7140Q, S7140Q, S7140QW, S7140S, S7140SW, S70, S700, S71, S701, S5120DE, S5120WDE, A5120S, A5120SW, RA-B770, RA-B770F, T80QW, T5120Q FCC ID: 2BWL4-S5120QSW Applicant: Eastech (Huizhou) Co., Ltd Address: BLD 6, Meilonghu (Phase II), Xinxu, Huiyang, Huizhou 516000, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2607323 Date of Test: Jun. 23, 2026 to Jul. 20, 2026 Date of Report: Jul. 24, 2026 Page 2 of 4 Report No. ESTE-R2607323 Maximum Permissible Exposure 1. Applicable Standards Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 & KDB 447498 D04 V01 this device has been defined as a mobile device whereby a distance of 0.2m normally can be maintained between the user and the device. 1.1. Limits for Maximum Permissible Exposure (MPE) (a) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-10000 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-10000 1.o 30 Note: f=frequency in MHz; *Plane-wave equivalent power density Page 3 of 4 Report No. ESTE-R2607323 1.2. MPE Calculation Method E (V/m) = d G × P × 30 Power Density: Pd (W/m 2 ) = 377 E 2 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = 2 d × 377 G × P × 30 From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained Page 4 of 4 Report No. ESTE-R2607323 2. Conducted Result and Limit For 5.8G SRD Field strength =66.95dBuV/m@3m P*G={ [10 (66.95/20) /10 6 *3] 2 /30 }*1000mW =0.001mW Pd= (30*0.001)/ (377*20 2 )=0.0000002<1 End of Test Report

Page 1 of 53 Report No.ESTE-R2607322 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Eastech (Huizhou) Co., Ltd Wireless Subwoofer Model Number: S5120Q Additional Model: S5120R, S5120S, S5120QW, S5121Q, S5121R, S5121S, S512Q, S512LQ, S512S, S512LS, S512R, S512LR, S8Q, S8LQ, S8R, S8LR, SL80Q, SL81Q, SL80R, SL81R, T8, T8Q, T8R, T8S, A3120Q, A7140Q, S7140Q, S7140QW, S7140S, S7140SW, S70, S700, S71, S701, S5120DE, S5120WDE, A5120S, A5120SW, RA-B770, RA-B770F, T80QW, T5120Q FCC ID: 2BWL4-S5120QSW Applicant: Eastech (Huizhou) Co., Ltd Address: BLD 6, Meilonghu (Phase II), Xinxu, Huiyang, Huizhou 516000, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2607322 Date of Test: Jun. 23, 2026 to Jul. 20, 2026 Date of Report: Jul. 24, 2026 Page 2 of 53 Report No.ESTE-R2607322 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................ 5 1.1. Description of Device (EUT) ......................................................................................................... 5 1.2. Antenna Information ...................................................................................................................... 5 1.3. Information of RF Cable ................................................................................................................ 5 2. SUMMARY OF TEST ........................................................................................................................ 6 2.1. Summary of test result .................................................................................................................. 6 2.2. Test Facilities .................................................................................................................................. 7 2.3. Measurement uncertainty ............................................................................................................. 8 2.4. Assistant equipment used for test ............................................................................................... 8 2.5. Block Diagram ................................................................................................................................ 8 2.6. Test Mode ....................................................................................................................................... 9 2.7. Power Setting of Test Software ................................................................................................... 9 2.8. Channel List .................................................................................................................................. 10 2.9. Test Equipment List ..................................................................................................................... 11 3. FIELD STRENGTH OF FUNDAMENTAL .......................................................................................... 12 3.1. Limit ................................................................................................................................................ 12 3.2. Test Setup ..................................................................................................................................... 12 3.3. Spectrum Analyzer Setting ......................................................................................................... 12 3.4. Test Procedure ............................................................................................................................. 13 3.5. Test Result .................................................................................................................................... 14 4. RADIATED SPURIOUS EMISSIONS AND BAND EDGE ................................................................... 21 4.1. Limit ................................................................................................................................................ 21 4.2. Test Setup ..................................................................................................................................... 23 4.3. Spectrum Analyzer Setting ......................................................................................................... 24 4.4. Test Procedure ............................................................................................................................. 25 4.5. Test Result .................................................................................................................................... 26 5. 20DB BANDWIDTH ....................................................................................................................... 38 5.1. Limit ................................................................................................................................................ 38 5.2. Test Setup ..................................................................................................................................... 38 5.3. Spectrum Analyzer Setting ......................................................................................................... 38 5.4. Test Procedure ............................................................................................................................. 38 5.5. Test Condition .............................................................................................................................. 38 5.6. Test Result .................................................................................................................................... 39 6. AC POWER LINE CONDUCTED EMISSIONS ................................................................................…

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Page 1 of 5 深 圳 市 亚 岱 科 技 有 限 公 司 SHENZHEN A&D TECHNOLOGY CO. Address: A701E, Building 1, Shenzhen Software Industry Base, No. 81, 83, 85 Gaoxin South 10th Road, Binhai Community, Yuehai Street, Nanshan District, Shenzhen, Guangdong Province, China EV21AD LA Antenna Product specification Quick Reference Data Antenna Layout & module on the system board Frequency Range 5135-5250MHz / 5725 ~ 5850MHz Ant. Port Input Pwr. (dBm) 10 (dBi) 0 (all direction antenna) Efficiency (dB) 62.67 % Gain (dBi) 0.5 (peak Gain XY-plane) Input Impendence(ohm) 50 Polarization Type Vertical & Horizontal VSWR < 2 Antenna Layout & module on the system board Page 2 of 5 深 圳 市 亚 岱 科 技 有 限 公 司 SHENZHEN A&D TECHNOLOGY CO. Antenna Gain Freq.[MHZ] 5725 5800 5850 Eff.[%] 59.08% 62.67% 60.14% Peak Gain [dBi] 0.1 0.2 0.26 The Environment of Antenna Radiation Pattern Page 3 of 5 深 圳 市 亚 岱 科 技 有 限 公 司 SHENZHEN A&D TECHNOLOGY CO. 3D radiation pattern diagram 5135Mhz-5250Mhz : < 0.48dBi Page 4 of 5 深 圳 市 亚 岱 科 技 有 限 公 司 SHENZHEN A&D TECHNOLOGY CO. 5725Mhz - 5850Mhz : < 0.26dBi

Conducted Test Radiated Test (30-1000 MHz) Radiated Test (Above 1GHz) Radio Spectrum Test