2AR9U-MS2SIAMPMotorcycle audio system

MOTORCYCLE AUDIO SYSTEM Excitement on Every Mile User Manual ▲Built-in Amplifier Version — Amplifier is built-in, no external connection required ▲External Amplifier Version — Requires connection to an external amplifier to use full functionality Please confirm the model you purchased before referring to the corresponding operating instructions. ▲External Amplifier Version Functions/Ports Built-in AmplifierExternal Amplifier Radio× × √ √ √√ √ √ External Amplifier Port Wired Control TWS Pairing ▲Built-in Amplifier Version 1. Install by a professional and secure firmly to avoid loosening. 2. Use DC 12V power only; add a fuse for protection. 3. Keep volume moderate to ensure safe riding and avoid disturbing others. 4. Water-resistant but not waterproof—do not submerge or spray with high-pressure water. 5. Follow local traȁc laws and never let audio distract you while riding. 1.Motorcycle audio(Double pack *2/ͳuad pack *4) 2.Amplifier*1 (With external amplifier / With built-in amplifier ) 3.Wired control*1 4.Mounting bracket kit*1 5.User manual*1 ▲Only models with an amplifier have the radio function; other models without an amplifier are not equipped with this feature. 3. Install the speaker with the mounting clamp using the M5 screw set. (For larger bars, cutting or removing the inserted rubber may be required.) Note: We oȀer a variation of the mounting bracket. Contact us if the included mounting hardware does not fit your setup: [[email protected]](mailto:- [email protected]) ▲Note: When installing, it is recommended to tilt the speaker slightly down- ward to prevent water accumulation during rain. Screw the mounting bracket to the bottom of the speaker. ▲Requires installation with four screws Step 1 Step 2 Step 3 Locate a safe mounting location on the mounting bar. ① ② ③ 2.Power Cable Installation 1. Under the seat – low center of gravity, hidden, keep waterproof and dust- proof. 2. Inside the top box or storage – easy wiring and maintenance, keep wiring short. 3. Under the fuel tank or inside the frame – balanced weight, may need custom bracket. 4. On custom side brackets – suitable for heavy or custom bikes, keep water- proof and vibration-proof. 5.The radio antenna has a magnetic base that can attach to iron objects. 1.Connect to Amplifier Device 1 Device 2 Radio Antenna Device 3 Device 4 DC 10-20v 2.Power Cable Installation 1.Amplifier Buttons Volume +Previous TrackPause Long Press Power to Turn On Next TrackVolume - FM FLFR RLRR DC 12v USB 1. Power On/OȀ Long press for 3 seconds to power on/oȀ, short press for 1 second to switch mode. 2. Previous Track 3. Next Track 4. Volume Up 5. Volume Down 6. Eͳ Tone 6. Eͳ Tone 7. TWS Pairing ① ② ⑦ ④ ⑥ ③ ③ ⑤ 1. Press **Mode** to switch the unit to FM mode. 2. Short press **Previous / Next** to scan radio stations manually. 3. Long press **Play** to scan and auto-save radio stations. 1. Press **Mode** to switch the unit to Bluetooth mode. 2. Enable Bluetooth on your smartphone. 3. Search for the Bluetooth device named “EhahoE2R / EhahoE4R”. 4. Pair the device (enter **0000** if it asks for a PIN). 5. **“Connected”** will be indicated if successfully connected. 1. After inserting USB, single-click the power button to switch to USB mode Eͳ Mode: Long press the Eͳ button for 3 seconds; the control light flashes once for Bass, twice for Full Range, and three times for Treble. Thank you for choosing Ehaho.lf you have any questions or need assistance,please contact our customer service team at:[email protected]

Rev 1/26/2023 SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 12-20-2025 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AR9U-MS2SIAMP [SHENZHEN AIRUIMAI 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. [SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD] certifies 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). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, (Applicant signature) (Applicant printed name) Lv Ran Rev 1/26/2023 SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 12-20-2025 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AR9U-MS2SIAMP [SHENZHEN AIRUIMAI 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, (Applicant signature) (Applicant printed name) Lv Ran

SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: December 20, 2025 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2AR9U-MS2SIAMP SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD (“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Company Name: SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD FRN: 0028153013 Address: Floor 2/3, 4thBuilding, Wenge Industrial Area, Gongming Town, Guangming District, Shenzhen, China Signature: Contact Person: Lv Ran Tel: 18575592177 Email: [email protected]

SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Date: December 20, 2025 Product Model Number: MS-2-SI-AMP, MS-2-BL-AMP, MS-2-SI, MS-2-BL, MS-4-SI-AMP, MS-4-BL-AMP, RX1200A, RX1200B, RX450A, RX450B FCC ID: 2AR9U-MS2SIAMP To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:  Testing  Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. By: Lv Ran Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: 18575592177 On behalf of: SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD

SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: December 20, 2025 Subject; Request for Confidentiality FCC ID: 2AR9U-MS2SIAMP To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Lv Ran Title: Manager

SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Model Difference Statement DATE: December 20, 2025 FCC ID: 2AR9U-MS2SIAMP Dear Sir/Madam, Added models MS-2-BL-AMP, MS-2-SI, MS-2-BL, MS-4-SI-AMP, MS-4-BL-AMP, RX1200A, RX1200B, RX450A, RX450B basis of the original product MS-2-SI-AMP. The color of appearance and model name of series models listed are different from the main model, but the circuit and the electronic construction are the same, declared by the manufacturer. Sincerely, Name: Lv Ran Title: Manager Company name: Shenzhen ZhiHuiJu Technology Co., Ltd Address: Floor 2/3, 4thBuilding, Wenge Industrial Area, Gongming Town, Guangming District, Shenzhen, China

Summary Inverted F Antenna Specification ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2400MHz 2500MHz 2400MHz 2400MHz 2500MHz -1.26-0.76-0.58-5.25-2.46-1.86 MAX. Gain -0.58dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Antenna type PCB Antenna Impedance 50 Ohm length and width 15.2*5.7mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Address 333 Kexing Road, Xiangzhou District, Zhuhai City, Guangdong Province Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 -1.26174-30.0801-7.18716 2450 -0.765802-36.5604-7.48023 2500 -0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 -5.2537-22.1424-12.4294 2450 -2.4652-24.5837-10.4702 2500 -1.86120-29.5214-9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report Annex A. EUT External Photos Model: MS-2-SI-AMP EUT View 1 EUT View 2 Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report EUT View 3 EUT View 4 Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report EUT View 5 EUT View 6 Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report EUT View 7

Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report Annex D. Label and Inf ormation FCC Label Sample FCC Labe Size: 4cm * 2cm FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location Label Location

Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report Annex B. EUT Internal Photos Model: MS-2-SI-AMP EUT Internal View 1 EUT Internal View 2 FM Receiving Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report EUT Internal View 3 EUT Internal View 4 PCB ANT

FCC ID: 2AR9U-MS2SIAMP RF Exposure Evaluation Limits 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 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz 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 = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation For BR+EDR Mode Output power to antenna (dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm2) Limit (mW/cm2) Result 8DPSK 1.58 1(±1) 2 1.58 0.0003 1.0 PASS Remark: antenna gain= -0.58dBi

Report No: SSP25120270-1E FCC Test Report Page 1 of 49 FCC TEST REPORT FCC ID: 2AR9U-MS2SIAMP Report No. : SSP25120270-1E Applicant : SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Product Name : Motorcycle audio system Model Name : MS-2-SI-AMP Test Standard : FCC Part 15.247 Date of Issue : 2025-12-18 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. Report No: SSP25120270-1E FCC Test Report Page 2 of 49 Test Report Basic Information Applicant..................................: SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Address of Applicant...............: Floor 2/3, 4thBuilding, Wenge Industrial Area, Gongming Town, Guangming District, Shenzhen, China Manufacturer..........................: SHENZHEN AIRUIMAI TECHNOLOGY CO., LTD Address of Manufacturer........: Floor 2/3, 4thBuilding, Wenge Industrial Area, Gongming Town, Guangming District, Shenzhen, China Product Name.........................: Motorcycle audio system Brand Name.............................: - Main Model..............................: MS-2-SI-AMP Series Models..........................: MS-2-BL-AMP, MS-2-SI, MS-2-BL, MS-4-SI-AMP, MS-4-BL-AMP, RX1200A, RX1200B, RX450A, RX450B Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2020 Date of Test .............................: 2025-12-11 to 2025-12-17 Test Result...............................: PASS Tested By ................................: (Walker Wu) Reviewed By............................: (Lorzix Luo) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. Report No: SSP25120270-1E FCC Test Report Page 3 of 49 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................6 1.3 Compliance Standards ...........................................................................................................................................7 1.4 Test Facilities ........................................................................................................................................................7 1.5 List of Measurement Instruments ..........................................................................................................................8 1.6 Measurement Uncertainty .....................................................................................................................................9 2. Summary of Test Results ........................................................................................................................................... 10 3. Antenna Requirement ............................................................................................................................................... 11 3.1 Standard and Limit.............................................................................................................................................. 11 3.2 Test Result .......................................................................................................................................................... 11 4. Conducted Emissions ................................................................................................................................................ 12 4.1 Standard and Limit.............................................................................................................................................. 12 4.2 Test Procedure.................................................................................................................................................... 12 4.3 Test Data and Results .......................................................................................................................................... 13 5. Radiated Emissions ................................................................................................................................................... 14 5.1 Standard and Limit.............................................................................................................................................. 14 5.2 Test Procedure.................................................................................................................................................... 14 5.3 Test Data and Results .......................................................................................................................................... 16 6. Band-edge Emissions(Radiated) ............................................................................................................................... 20 6.1 Standard and Limit.............................................................................................................................................. 20 6.2 Test Procedure.................................................................................................................................................... 20 6.3 Test Data and Results ...................................................................…

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Report No: SSP25120270-1E FCC ID: 2AR9U-MS2SIAMP Annex of Test Report Annex C. Test Photos Radiated Emission Test View Below 1GHz Radiated Emission Test View Above 1GHz