2A6UA-DB03White Noise Machine

回 the use「is encouraged to try to correct the inte『fe陀neeby one or mo陀 of the following measures: -Reorient or relocate the receiving antenna 一Increasethe separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit di仔erentfrom that to which the receiver is connected. -Consult the dealer o「an experienced radiofTVtechnician for help. Note:The G『antee is not responsible h「any changes o『『nodifications not exp陀ssly approved by the party responsible for complia nee. such modifications could void the user坦白uthority to operate the e quipment. The device has been evaluated to meet general RF exposure requi用ment. 。， 回 10 IC Statement This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic DevelopmentCanada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1)This device may not cause interference. (2)This device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil contient des émetteurs/récepteurs exemptés de licence qui sont conformes aux flux RSS exemptés de licence de Innovation, Science et développement économique Canada. L’exploitation est soumise aux deux conditions suivantes: 1)cet appareil ne doit pas causer d’interférences. (2) ce dispositif doit accepter toute interférence, y compris toute interférence susceptible de provoquer un fonctionnement indésirable du dispositif. IC RF Radiation Exposure and SAR Statements The White Noise Machine/M21FWDB03 has been tested for body-worn Specific Absorption Rate (SAR) compliance. The IC has established detailed SAR requirements and has established that these requirements. RF Exposure Information The radio module has been evaluated under IC Bulletin C95.1 and IEEE 1528 and found to be compliant to RF Exposure from radio frequency devices. This model meets the applicable government requirements for exposure to radio frequency waves. The highest reported SAR level for usage near the body (0mm) is 0.055 W/kg.

Rev 1/26/2023 Hong Kong Lute Technology Co., Limited Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 3-10-2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID ：2A6UA-DB03 Applicant FRN: 0032392508 [Hong Kong Lute Technology Co., Limited] certifies that, as of the date of the filing of the application, [ROOT TECHNOLOGY LTD.] is our designated U.S. agent for service of process for the above referenced FCC ID. [Hong Kong Lute Technology Co., Limited] 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. [ROOT TECHNOLOGY LTD.] 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: ROOT TECHNOLOGY LTD. FRN: 0036719888 Address: 1624 Market St Ste 226 #30327 Denver, CO 80202, United States Contact Person: Amy Dong Phone: (727) 358-6978 Email: [email protected] Sincerely, [申请商] Hong Kong Lute Technology Co., Limited ROOT TECHNOLOGY LTD. [联系人] Richard Pan Amy Dong

(Hong Kong Lute Technology Co., Limited) (2026.3.10) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for(FCC ID: 2A6UA-DB03) [Hong Kong Lute Technology Co., Limited] (“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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) Richard Pan (Hong Kong Lute Technology Co., Limited) (2026.3.10) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for(FCC ID: 2A6UA-DB03) [Hong Kong Lute Technology Co., Limited] (“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. Sincerely, (Applicant signature) (Applicant printed name) Richard Pan

Hong Kong Lute Technology Co., Limited 2026.3.10 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: White Noise Machine MODEL : M21FWDB03 FCC ID: 2A6UA-DB03 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Richard Pan / Assistant General Manager Contact information / address: Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong

Hong Kong Lute Technology Co., Limited 2026.3.10 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION EUT NAME: White Noise Machine MODEL : M21FWDB03 FCC ID: 2A6UA-DB03 To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Richard Pan / Assistant General Manager Contact information / address: Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong

External Photos

Size:25*10mm Model: M21FWDB03 HVIN: M21FWDB03-A IC : 29085-DB03 FCC ID: 2A6UA-DB03 Label location Size:25*10mm Model: A1104 HVIN: A1104 IC : 20208-A1103 FCC ID: 2AD99-A1103 Label location

Internal Photos Antenna

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.:STS2601403H01 Issued for Hong Kong Lute Technology Co., Limited Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Product Name: White Noise Machine Brand Name: momcozy Model Name: M21FWDB03 Series Model(s): N/A FCC ID: 2A6UA-DB03 Test Standards: FCC 47CFR §2.1093 Page 2 of 7 Report No.: STS2601403H01 TEST REPORT Applicant’s Name ................. : Hong Kong Lute Technology Co., Limited Address ................................. : Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Manufacturer's Name ........... : Hong Kong Lute Technology Co., Limited Address ................................. : Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Product Description Product Name ........................ : White Noise Machine Brand Name .......................... : momcozy Model Name .......................... : M21FWDB03 Series Model(s) ...................... : N/A Test Standards ..................... : FCC 47CFR §2.1093 447498 D01 Interim General RF Exposure Guidance v06 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 27 Oct. 2025 Date (s) of performance of tests ............. : 27 Oct. 2025 to 31 Jan. 2026 Date of Issue .......................................... : 31 Jan. 2026 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 7 Report No.: STS2601403H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 7 Page 4 of 7 Report No.: STS2601403H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 31 Jan. 2026 STS2601403H01 ALL Initial Issue Page 5 of 7 Report No.: STS2601403H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name White Noise Machine Brand Name momcozy Model Name M21FWDB03 Series Model(s) N/A Model Difference N/A Product Description The EUT is a White Noise Machine Operation Frequency: 2402 – 2480 MHz 802.11b/g/n 20: 2412~2462 MHz Modulation Type: GFSK 802.11b(DSSS):CCK,DQPSK,DBPSK 802.11g(OFDM):BPSK,QPSK,16-QAM,64-Q AM 802.11n(OFDM):BPSK,QPSK,16-QAM,64-Q AM 802.11b/g Support SISO 802.11n Support SISO Antenna gain: 1.68 dBi Antenna Designation: Internal Antenna Power Rating DC 5V from adapter/ DC 3.7V from battery Adapter N/A Battery DC 3.7V Hardware Version N/A Software Version N/A 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 7 Report No.: STS2601403H01 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Page 7 of 7 Report No.: STS2601403H01 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 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 is applied to determine SAR test exclusion. 2.3 TEST RESULT Maximum measured transmitter power. Worst Case Mode frequency Maximum Output Power Tune up tolerance Max Tune up GHz dBm dBm dBm 2.4G WIFI 2.412 6.33 6±1 7 GFSK(BLE) 2.480 2.46 2±1 3 Evaluation Result Mode Frequency Antenna Distance RF output power including tune up (dBm) SAR Test Exclusion Threshold SAR Test Exclusion Estimated SAR GHz mm dBm mw 2.4G WIFI 2.412 5 7 5.012 1.557 Yes / GFSK(BLE) 2.480 5 3 1.995 0.628 Yes / Note: 1. Remark: The worst case gain of the antenna is 1.68 dBi. 2. Threshold at which no SAR required is 1.557≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. ※※※※※END OF THE REPORT※※※※※

AntennaSpecification Manufacture：TUYA ProductName：T1-3SAntenna AntennaType：PCB TestDate：2025.2.25 Testedby：YJC Approvedby：Licco Content 1.GeneralDescription.................................................................................1 2.TestConfigurations...................................................................................2 2.1TestEnvironment............................................................................2 2.2TestEquipment...............................................................................2 2.3TestPrinciple...................................................................................2 3.TestResults..............................................................................................3 3.1GainandEfficiency..........................................................................3 3.2RadiationPattern............................................................................4 4.AntennaDimensions................................................................................6 5.EUTPhoto................................................................................................6 6.TestSetupPhoto......................................................................................6 1 1.GeneralDescription ManufacturerHangzhouTuyaInformationTechnologyCo.,Ltd Address Room701,Building3,MoreCenter,No.87GuDunRoad, Hangzhou,Zhejiang,China TestLocation Room106,Building3,LetongSciencePark,No.500, QiuyiRoad,BinjiangDistrict,Hangzhou ProductNameT1-3SAntenna Productmodel T1-3S AntennaType PCBAntenna TestItems Gain;Efficiency;RadiationPattern TestFrequency 2400-2500MHz TestStandard ANSI/IEEEStd149-1979 2 2.TestConfigurations 2.1TestEnvironment Temperature(°C)25 Humidity(%RH)60 AtmosphericPressure(kPa)100.5 2.2TestEquipment TestSystemTEM24Multi-probeMicrowaveChamber TestInstrumentAgilentE5071B 2.3TestPrinciple 3 3.TestResults 3.1GainandEfficiency Frequency(MHz)PeakGain(dBi)Efficiency(%) 24001.38 42.95 24101.23 43.95 24201.35 45.39 24301.23 46.56 24401.03 46.34 24501.36 51.17 24601.21 51.64 24701.38 52.6 24801.68 51.52 24901.12 52.84 25001.17 50.12 4 3.2RadiationPattern Phi02D Phi902D Theta902D 5 2400MHz3D 2450MHz3D 2500MHz3D 6 4.AntennaDimensions(mm) Unit:mm 5.EUTPhoto 6.TestSetupPhoto Antenna

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2601403W03 Issued for Hong Kong Lute Technology Co., Limited Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Product Name: White Noise Machine Brand Name: momcozy Model Name: M21FWDB03 Series Model(s): N/A FCC ID: 2A6UA-DB03 Test Standards: FCC Part15.247 Page 2 of 54 Report No.: STS2601403W03 TEST REPORT Applicant’s Name ................. : Hong Kong Lute Technology Co., Limited Address ................................. : Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Manufacturer's Name .......... : Hong Kong Lute Technology Co., Limited Address ................................. : Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Product Description Product Name ....................... : White Noise Machine Brand Name .......................... : momcozy Model Name .......................... : ... : M21FWDB03 Series Model(s) .................... : N/A Test Standards ..................... : FCC Part15.247 Test Procedure ...................... : ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the IC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ..................... : 27 Oct. 2025 Date (s) of performance of tests ............. : 27 Oct. 2025 to 31 Jan. 2026 Date of Issue .......................................... : 31 Jan. 2026 Test Result.............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 54 Report No.: STS2601403W03 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 TEST SOFTWARE AND POWER LEVEL 10 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.6 EQUIPMENTS LIST 12 3. EMC EMISSION TEST 13 3.1 CONDUCTED EMISSION MEASUREMENT 13 3.2 TEST PROCEDURE 14 3.3 TEST SETUP 14 3.4 EUT OPERATING CONDITIONS 14 3.5 TEST RESULTS 15 4. RADIATED EMISSION MEASUREMENT 17 4.1 RADIATED EMISSION LIMITS 17 4.2 TEST PROCEDURE 19 4.3 TEST SETUP 20 4.4 EUT OPERATING CONDITIONS 20 4.5 FIELD STRENGTH CALCULATION 21 4.6 TEST RESULTS 21 5. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 5.1 LIMIT 30 5.2 TEST PROCEDURE 30 5.3 TEST SETUP 30 5.4 EUT OPERATION CONDITIONS 30 5.5 TEST RESULTS 30 6. POWER SPECTRAL DENSITY TEST 31 6.1 LIMIT 31 6.2 TEST PROCEDURE 31 6.3 TEST SETUP 31 Page 4 of 54 Report No.: STS2601403W03 Table of Contents Page 6.4 EUT OPERATION CONDITIONS 31 6.5 TEST RESULTS 31 7. BANDWIDTH TEST 32 7.1 LIMIT 32 7.2 TEST PROCEDURE 32 7.3 TEST SETUP 32 7.4 EUT OPERATION CONDITIONS 32 7.5 TEST RESULTS 32 8. PEAK OUTPUT POWER TEST 33 8.1 LIMIT 33 8.2 TEST PROCEDURE 33 8.3 TEST SETUP 33 8.4 EUT OPERATION CONDITIONS 33 8.5 TEST RESULTS 33 9. ANTENNA REQUIREMENT 34 9.1 STANDARD REQUIREMENT 34 9.2 EUT ANTENNA 34 APPENDIX 1-TEST DATA 35 APPENDIX 2- EUT TEST PHOTO 54 Page 5 of 54 Report No.: STS2601403W03 Revision History Rev. Issue Date Report No. Effect Page Contents 00 31 Jan. 2026 STS2601403W03 ALL Initial Issue Page 6 of 54 Report No.: STS2601403W03 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247 (a)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/ Part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- Note: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Page 7 of 54 Report No.: STS2601403W03 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Power Spectral Density, conducted ±1.214dB 11 Duty Cycle ±3.2% Page 8 of 54 Report No.: STS2601403W03 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name White Noise Machine Brand Name momcozy Model Name M21FWDB03 Series Model(s) N/A Model Difference N/A Product Description The EUT is a White Noise Machine Operation Frequency: 2402~2480…

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The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2601403W04 Issued for Hong Kong Lute Technology Co., Limited Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Product Name: White Noise Machine Brand Name: momcozy Model Name: M21FWDB03 Series Model(s): N/A FCC ID: 2A6UA-DB03 Test Standards: FCC Part15.247 Page 2 of 68 Report No.: STS2601403W04 TEST REPORT Applicant’s Name ................. : Hong Kong Lute Technology Co., Limited Address ................................. : Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Manufacturer's Name ........... : Hong Kong Lute Technology Co., Limited Address ................................. : Room 803B, 8/F, West Bund International Building, 290-296 Yuen Chau Street, Cheung Sha Wan, Kowloon, Hongkong Product Description Product Name ........................ : White Noise Machine Brand Name ........................... : momcozy Model Name .......................... : M21FWDB03 Series Model(s) .................... : N/A Standards ............................. : FCC Part 15.247 Test Procedure........................: ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 27 Oct. 2025 Date (s) of performance of tests ............. : 27 Oct. 2025 to 31 Jan. 2026 Date of Issue .......................................... : 31 Jan. 2026 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 68 Report No.: STS2601403W04 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 TEST SOFTWARE AND POWER LEVEL 10 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 12 3. EMC EMISSION TEST 13 3.1 CONDUCTED EMISSION MEASUREMENT 13 3.2 RADIATED EMISSION MEASUREMENT 17 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 4.1 LIMIT 30 4.2 TEST PROCEDURE 30 4.3 DEVIATION FROM STANDARD 30 4.4 TEST SETUP 30 4.5 EUT OPERATION CONDITIONS 30 4.6 TEST RESULTS 30 5. POWER SPECTRAL DENSITY TEST 31 5.1 LIMIT 31 5.2 TEST PROCEDURE 31 5.3 DEVIATION FROM STANDARD 31 5.4 TEST SETUP 31 5.5 EUT OPERATION CONDITIONS 31 5.6 TEST RESULTS 31 6. BANDWIDTH TEST 32 6.1 LIMIT 32 6.2 TEST PROCEDURE 32 6.3 DEVIATION FROM STANDARD 32 6.4 TEST SETUP 32 6.5 EUT OPERATION CONDITIONS 32 Page 4 of 68 Report No.: STS2601403W04 Table of Contents Page 6.6 TEST RESULTS 32 7. PEAK OUTPUT POWER TEST 33 7.1 LIMIT 33 7.2 TEST PROCEDURE 33 7.3 DEVIATION FROM STANDARD 33 7.4 TEST SETUP 33 7.5 EUT OPERATION CONDITIONS 33 7.6 TEST RESULTS 33 8. ANTENNA REQUIREMENT 34 8.1 STANDARD REQUIREMENT 34 8.2 EUT ANTENNA 34 APPENDIX 1-TEST DATA 35 APPENDIX 2-PHOTOS OF TEST SETUP 68 Page 5 of 68 Report No.: STS2601403W04 Revision History Rev. Issue Date Report No. Effect Page Contents 00 31 Jan. 2026 STS2601403W04 ALL Initial Issue Page 6 of 68 Report No.: STS2601403W04 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247 (a)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted Band Edge Emission PASS -- Part 15.247(d)/ part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Page 7 of 68 Report No.: STS2601403W04 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Power Spectral Density, conducted ±1.214dB 11 Duty Cycle ±3.2% Page 8 of 68 Report No.: STS2601403W04 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name White Noise Machine Brand Name momcozy Model Name M21FWDB03 Series Model(s) N/A Model Difference N/A Product Description The EUT is a White Noise Machine Operation Frequency: 802.11b/g/n 20: 2412~2462 MHz Modulation Type: 802.11b(DSSS):CCK,DQPSK,DBPSK 802.11g(OFDM):BPSK,QPSK,16-QA…

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Page 1 of 2 FCC ID: 2A6UA-DB03 Conducted emissions 30MHz-1GHz Page 2 of 2 FCC ID: 2A6UA-DB03 Spurious emissions