2ARBY-CLASSIC-300SBUltrasonic Cool Mist Humidifier

Arovastcorporation CoveredEquipmentCertificationAttestationLetter 4/6/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2ARBY-CLASSIC-300SB Arovastcorporation(“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredListasanentityproducing “covered”equipment. Signed: Printedname:ChrisHuang Title:SrManager,ProductCompliance CompanyName:Arovastcorporation Date:4/6/2023

Arovastcorporation * theapplicantmustdesignateacontactlocatedintheUnitedStatesforpurposesofactingasthe applicant’sagentforserviceofprocess,regardlessofwhethertheapplicantisadomesticorforeign entity.AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. U.S.AgentDesignationforServiceofProcess- CertificationAttestationLetter 4/6/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2ARBY-CLASSIC-300SB Persection2.911(d)(7)oftheFCCrules,Arovastcorporation(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisdesignatedtothefollowingU.S.agent*for serviceofprocess: CompanyName:Arovastcorporation FCCRegistrationNumber(FRN):0027859651 PhysicalU.S.CompanyAddress:1202NMillerSt.,SuiteA,Anaheim,CA92806,USA ContactPerson:ChrisHuang AgentEmailAddress:[email protected] Theabovecontactpersonacceptstheobligationforserviceofprocess. Theapplicantacceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. ApplicantSigned:AgentSigned(ifdifferentfromApplicant): Signed:Signed: Printedname:ChrisHuangPrintedname:ChrisHuang Title:SrManager,ProductComplianceTitle:SrManager,ProductCompliance CompanyName:ArovastcorporationCompanyName:Arovastcorporation Date:4/6/2023Date:4/6/2023

Arovastcorporation CoveredEquipmentCertificationAttestationLetter 4/6/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2ARBY-CLASSIC-300SB Arovastcorporation(“theapplicant”)certifiesthattheequipmentforwhichauthorization issoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. Signed: Printedname:ChrisHuang Title:SrManager,ProductCompliance CompanyName:Arovastcorporation Date:4/6/2023

DATE:4/7/2023 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 AuthoritytoActasAgent Onourbehalf,IappointESTTechnologyCo.,Ltd.Address:Chilingxiang,Qishantou, Santun,Houjie,Dongguan,Guangdong,Chinatoactasouragentinthepreparationof thisapplicationforequipmentcertification.Icertifythatsubmitteddocumentsproperly describethedeviceorsystemforwhichequipmentcertificationissought.Ialsocertifythat eachunitmanufactured,importedormarketed,asdefinedintheFederalCommunications Commission’sregulationswillhaveaffixedtoitalabelidenticaltothatsubmittedfor approvalwiththisapplication. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonour behalf,Iacknowledgethatallresponsibilityforcomplyingwiththetermsandconditions forcertification,stillresideswithArovastcorporationAddress:1202NMillerSt.,Suite A,Anaheim,CA92806,USA <Signature> Name：ChrisHuang Title：SrManager,ProductCompliance ApplicantCompany ： Arovastcorporation

DATE:4/7/2023 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2ARBY-CLASSIC-300SB ProductName:UltrasonicCoolMistHumidifier RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommissionsrules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: Schematics  Blockdiagram Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. <Signature> Name：ChrisHuang Title：SrManager,ProductCompliance Company：ArovastCorporation

Arovastcorporation I,theundersigned,Chrishuang: Thefollowingmodelshavethesametechnicalconstructionincludingcircuitdiagram,PCB Layout,componentsandcomponentlayout,allelectricalconstructionandmechanical construction,exceptthedifferentmodelnameandcolor. 1)ModelNo.:Classic300S 2)ModelNo.:LUH-A601S-WUSB 3)ModelNo.:LUH-A601S-BUSR 4)ModelNo.:LUH-A601S-followedbythreetofourletters FCCID:2ARBY-CLASSIC-300SB Sincerely, Client’ssignature: Client’sname/title:ChrisHuang/SrManager,ProductCompliance Contactinformation/address:1202NMillerSt.,SuiteA,Anaheim,CA92806,USA Telephone:7145091019 FaxNo.:N/A

External Photos M/N: Classic300S External Photos M/N: Classic300S External Photos M/N: Classic300S

Label Location

Internal Photos M/N: Classic300S Internal Photos M/N: Classic300S Internal Photos M/N: Classic300S Antenna Internal Photos M/N: Classic300S Internal Photos M/N: Classic300S Internal Photos M/N: Classic300S Internal Photos M/N: Classic300S

FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co. ,Ltd Report No. ESTE-R2304008 Page 1 of 5 FCC 47 CFR MPE REPORT Arovast corporation Ultrasonic Cool Mist Humidifier Model Number: Classic300S Additional Model: LUH-A601S-WUSB, LUH-A601S-BUSR. LUH-A601S- followed by three to four letters. These medels are identical, except the model name and color. FCC ID: 2ARBY-CLASSIC-300SB Applicant: Arovast corporation Address: 1202 N Miller St. Suite A, Anaheim, California 92806, United States Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2304008 Date of Test: Mar. 21, ~Apr. 03, 2023 Date of Report: Apr. 04, 2023 FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co. ,Ltd Report No. ESTE-R2304008 Page 2 of 5 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 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 FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co. ,Ltd Report No. ESTE-R2304008 Page 3 of 5 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 FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co. ,Ltd Report No. ESTE-R2304008 Page 4 of 5 2. Conducted Power Result Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) GFSK 2402 9.44 8.790 2441 9.52 8.954 2480 9.33 8.570 π/4-DQPSK 2402 11.74 14.928 2441 11.67 14.689 2480 11.53 14.223 8-DPSK 2402 12.12 16.293 2441 12.06 16.069 2480 11.86 15.346 BLE 2402 9.38 8.670 2440 9.42 8.750 2480 9.09 8.110 IEEE 802.11b 2412 18.57 71.945 2437 18.16 65.464 2462 17.99 62.951 IEEE 802.11g 2412 16.05 40.272 2437 15.60 36.308 2462 15.64 36.644 IEEE 802.11n HT20 2412 16.05 40.272 2437 15.56 35.975 2462 15.61 36.392 IEEE 802.11n HT40 2422 15.42 34.834 2437 15.10 32.359 2452 15.10 32.359 FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co. ,Ltd Report No. ESTE-R2304008 Page 5 of 5 3. Calculated Result and Limit Mode Peak output power (dBm) Target power （dBm） MAX Target power （dBm） Antenna gain Power Density (S) (mW/cm2) Limited Of Power Density (S) (mW/cm2) Test Result (dBi) (Linear) 2.4G Band GFSK 9.52 9±1 10 3.76 2.377 0.00473 1 Complies π/4-DQPSK 11.74 11±1 12 3.76 2.377 0.00749 1 Complies 8-DPSK 12.12 12±1 13 3.76 2.377 0.00943 1 Complies BLE 9.42 9±1 10 3.76 2.377 0.00473 1 Complies IEEE 802.11b 18.57 18±1 19 3.76 2.377 0.03756 1 Complies IEEE 802.11g 16.05 16±1 17 3.76 2.377 0.02370 1 Complies IEEE 802.11n HT20 16.05 16±1 17 3.76 2.377 0.02370 1 Complies IEEE 802.11n HT40 15.42 15±1 16 3.76 2.377 0.01882 1 Complies End of Test Report

FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co., Ltd Report No. ESTE-R2304005 Page 1 of 82 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Arovast corporation Ultrasonic Cool Mist Humidifier Model Number: Classic300S Additional Model: LUH-A601S-WUSB, LUH-A601S-BUSR. LUH-A601S- followed by three to four letters. These medels are identical, except the model name and color. FCC ID: 2ARBY-CLASSIC-300SB Applicant : Arovast corporation Address: 1202 N Miller St. Suite A, Anaheim, California 92806, United States Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2304005 Date of Test: Mar. 21, ~Apr. 03, 2023 Date of Report: Apr. 04, 2023 FCC ID: 2ARBY-CLASSIC-300SB EST Technology Co., Ltd Report No. ESTE-R2304005 Page 2 of 82 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. Channel List ................................................................................................................................... 10 2.8. Power Setting of Test Software ...................................................................................................... 10 2.9. Test Equipment ............................................................................................................................... 11 3. MAXIMUM PEAK OUTPUT POWER ................................................................................................. 13 3.1. Limit ............................................................................................................................................... 13 3.2. Test Setup ....................................................................................................................................... 13 3.3. Spectrum Analyzer Setting ............................................................................................................. 13 3.4. Test Procedure ................................................................................................................................ 13 3.5. Test Result ...................................................................................................................................... 13 4. 20 DB BANDWIDTH ....................................................................................................................... 14 4.1. Limit ............................................................................................................................................... 14 4.2. Test Setup ....................................................................................................................................... 14 4.3. Spectrum Analyzer Setting ............................................................................................................. 14 4.4. Test Procedure ................................................................................................................................ 14 4.5. Test Result ...................................................................................................................................... 14 5. CARRIER FREQUENCY SEPARATION .............................................................................................. 15 5.1. Limit ............................................................................................................................................... 15 5.2. Test Setup ....................................................................................................................................... 15 5.3. Spectrum Analyzer Setting ............................................................................................................. 15 5.4. Test Procedure ................................................................................................................................ 15 5.5. Test Result ...................................................................................................................................... 15 6. NUMBER OF HOPPING CHANNEL .................................................................................................. 16 6.1. Limit ..................................................................................…

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OTA TEST REPORT Applicant Espressif Systems Product ESP ANT B Model ESP ANT B Report No. Y2209A0967-T1 Issue Date October 8, 2022 TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in ANSI/IEEE Std 149-2008. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Prepared by: Xu Ying Approved by: Xu Kai TA Technology (Shanghai) Co., Ltd. Building 3, No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China TEL: +86-021-50791141/2/3 FAX: +86-021-50791141/2/3-8000 OTA Test Report Report No: Y2209A0967-T1 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 2 of 16 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. TABLE OF CONTENTS 1. General Information ....................................................................................................................... 3 1.1. Notes of the Test Report ................................................................................................... 3 1.2. Testing laboratory .............................................................................................................. 3 1.3. Laboratory Environment .................................................................................................... 3 2. General Description of Equipment under Test ............................................................................... 4 2.1. Applicant Information ......................................................................................................... 4 2.2. Manufacturer Information .................................................................................................. 4 2.3. Information of EUT ............................................................................................................ 4 2.4. Test Date ........................................................................................................................... 4 2.5. Applied Standards ............................................................................................................. 5 3. Test Conditions .............................................................................................................................. 6 3.1. Test Configuration ............................................................................................................. 6 3.2. Test Measurement ............................................................................................................. 6 4. Test Results ................................................................................................................................... 7 4.1. Gain and Efficiency ............................................................................................................ 7 4.2. Voltage Standing Wave Ratio (VSWR) .............................................................................. 8 4.3. Antenna S11 ...................................................................................................................... 9 5. Test Equipment List ..................................................................................................................... 10 AP PEN DIX A: 2-D Pattern Plots ............................................................................................................. 11 APPENDIX B: The EUT Appearance and Test Configuration ............................................................. 15 B.1 EUT Appearance ................................................................................................................. 15 B.2 Test Configuration .............................................................................................................. 16 OTA Test Report Report No: Y2209A0967-T1 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 3 of 16 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 1. General Information 1.1. Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of TA technology (shanghai) co., Ltd.The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein .Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. This report must not be used by the client to claim product certification, approval, or endorsement by any government agencies. 1.2. Testing laboratory Company: TA Technology (Shanghai) Co., Ltd. Address: Building 3, No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China City: Shanghai Post code: 201201 Country: P. R. China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: http://www.ta-shanghai.com E-mail: [email protected] 1.3. Laboratory Environment Temperature Min. =19°C，Max. = 25°C Relative humidity Min. =40%，Max. =72% Shield effect 0.7-6GHz > 100dB Ground resistance <0.5Ω OTA Test Report Report No: Y2209A0967-T1 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 4 of 16 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 2. General Description of Equipment under Test 2.1. Applicant Information Company: Espressif Systems Address: #101, Block 2, 690 Bibo Road, Zhang Jiang High-Tech Park, Shanghai, China 2.2. Manufacturer Information Company: Espressif Systems Address: #101, Block 2, 690 Bibo Road, Zhang Jiang High-Tech Park, Shanghai, China 2.3. Information of EUT General information EUT Description Product Name: ESP ANT B Model ESP ANT B HW Version: / SW Version: / Antenna Type: PCB Antenna Antenna Size 18mm *6.19mm *0.8mm Antenna Manufacturer: Espressif Systems Test Fre…

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