2ARBY-DUAL200SLevoit Smart Top-fill Humidifier

Dual 200S Smart Top-Fill Humidifier Model: Dual 200S Questions or Concerns? Please contact us Mon–Fri, 9:00 am–5:00 pm PST/PDT at [email protected] or at (888) 726-8520. USER MANUAL 2 Table of Contents Package Contents Specifications Safety Information Getting to Know Your Smart Humidifier Controls & Display Getting Started VeSync App Setup Using Your Smart Humidifier Care & Maintenance Troubleshooting VeSync App Troubleshooting Warranty Information Customer Support 1 × Smart Top-Fill Humidifier 1 × Cleaning Brush 1 × User Manual 1 × Quick Start Guide 2 2 3 5 7 8 11 12 15 20 22 24 25 Specifications Package Contents Power Supply24V1A Rated Power24W Water Tank Capacity 0.79 gal / 3 L Max Run Time Up to 25 hours on low mist setting Note: The humidifier may run for a longer or shorter time depending on the environmental temperature and humidity. Noise Level ≤ 28dB Effective Range 107 – 290 ft² / 10 – 27 m² Dimensions 7.1 × 7.1 × 11.8 in / 18 × 18 × 30 cm Weight3 lb / 1.4 kg Power Adapter Input: AC 100–240V, 50/60Hz Output: DC 24V, 1A Note: To access additional smart humidifier functions, download the free VeSync app (see page 11). 3 SAFETY INFORMATION • Only use the humidifier as described in this manual. • Place the humidifier and cord so that it will not be knocked over. Do not place near large pieces of furniture or in high-traffic areas. • When not in use, turn the humidifier off and disconnect from power by removing the plug from the outlet. • Do not use the humidifier in wet environments. • Keep the humidifier out of reach from children. • Do not open the base or remove the water level sensor for self-servicing. • Always unplug your humidifier from the power outlet before cleaning your humidifier or detaching the water tank from the humidifier base. • Always make sure to place the humidifier on a flat, level surface before operation. • Only fill the water tank with clean water. Never fill the water tank with any other liquids. • Do not place the humidifier near sources of heat, such as stovetops, ovens, or radiators. • Do not place the humidifier directly on floors, carpets, or rugs. To reduce the risk of fire, electric shock, or other injury, follow all instructions and safety guidelines. General Safety • Do not use other items as replacement parts for this product. • Do not cover the nozzle while the humidifier is on. Doing so may damage the humidifier. • Remove the water tank from the base before moving the humidifier. • Do not immerse the humidifier base, power cord, or plug in water. • If the humidifier is damaged or is not functioning properly, stop using it and contact Customer Support immediately (see page 25). • Not for commercial use. Household use only. Do not add supplemental water treatment liquids into the water tank or base chamber. This will damage the humidifier and cause leaks. Caution: Risk of Leaks and Electric Shock READ AND SAVE THESE INSTRUCTIONS 4 Power & Cord • Ensure that the plug fits properly into a polarized socket. • Do not handle the power cord or plug with wet hands. Keep the plug and power cord away from liquids. • Your humidifier has a polarized plug (one prong is wider than the other), which fits into a polarized outlet only one way. This is a safety feature to reduce the risk of electric shock. If the plug does not fit, reverse the plug. If it still does not fit, do not use the plug in that outlet. Do not bypass this safety feature. SAFETY INFORMATION (CONT.) 5 GETTING TO KNOW YOUR SMART HUMIDIFIER A. Nozzle B. Water Tank Cover C. Water Filter Housing D. Water Filter E. Mist Tube F. Water Tank G. Float H. Base I. Display J. Cleaning Brush K. Power Adapter L. Max Water Line (Tank) M. Water Outlet Valve N. Noise Silencer O. Air Outlet P. Max Water Line (Base) Q. Float Brackets R. Transducer S. Secondary Float T. Humidity Sensor U. Feet V. Power Adapter Input W. Air Inlet A B M G K W T U S R J D N L F E C H I O P Q V Water tank, upside down 6 Getting To Know Your Smart Humidifier (cont.) ABDC GF E A. Mist Level Button B. No Water Indicator C. Wi-Fi® Indicator D. Timer Indicator Note: The timer must be set in the VeSync app. E. Power Button F. Humidity Level G. Mist Level Indicator 7 CONTROLS & DISPLAY Note: You can also control these functions using the VeSync app, as well as additional functions (see page 13). Power Button • Press to turn the humidifier on/off. • Press and hold for 5 seconds to pair with the VeSync app. See the VeSync in-app instructions for more information. • Press and hold for 15 seconds to reset the humidifier. This will restore the humidifier’s default settings and disconnect it from Wi-Fi® and the VeSync app (see page 11). Wi-Fi Indicator • Turns on, off, or blinks to indicate pairing status. See the VeSync in-app instructions for more information. No Water Indicator • Blinks when there is no water in the tank or the tank is removed. After this indicator blinks 10 times, the humidifier will turn off. Refill the tank and properly place it on the base to use your humidifier. Mist Level Button • Press repeatedly (or press and hold) to cycle through mist level settings: Low, High, and Auto Mode. (For more details on Auto Mode, see page 13.) • Press and hold for 3 seconds to turn off the humidifier display. This will automatically change the mist level setting to Auto Mode. 8 GETTING STARTED 1. Remove all packaging. 2. Take the water tank off of the base and remove all tape, including any tape on the float. [Figure 1.1] Figure 1.3 Figure 1.1 Figure 1.4 Figure 1.5 Figure 1.2 3. Rinse and reassemble all parts before first use (see Cleaning, page 15). Note: • Check to make sure that the water filter is correctly in place. If not, then rotate the filter clockwise to secure it in place. [Figure 1.2] 4. Choose a hard, flat location for the humidifier at least 12 inches / 30 cm away from any walls. The surface must be water-resistant. [Figure 1.4] 5. Mist should be directed away from walls, furniture, bedding, and appliances. [Figure 1.5] •…

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ArovastCorporation Date:June11,2021 TO: FederalCommunicationCommission EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MID21046 Regarding:FCCID:2ARBY-DUAL200S Towhomitmayconcern: We,theundersigned,herebyauthorizeSGS-CSTCStandardsTechnicalServicesCo.,Ltd.(SGS)ShenzhenBranch andKenyXuinSGS-CSTCStandardsTechnicalServicesCo.,Ltd.(SGS)ShenzhenBranchtoactonourbehalfinall mannersrelatingtoapplicationforequipmentauthorizationwithrespecttotheFCCIDabove,includingsigningof alldocumentsrelatingtothesematters.Anyandallactscarriedoutbytheagentonourbehalfshallhavethesame effectasactsofourown. We,theundersigned,herebycertifythatwearenotsubjecttoadenialoffederalbenefits,thatincludesFCC benefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21U.S.C.853(a). Whereouragentsignstheapplicationforcertificationonourbehalf,Iacknowledgethatallresponsibilityfor complyingwiththetermsandconditionsforCertification,asspecifiedbySGSNorthAmerica,Inc.,stillresideswith ArovastCorporation. Thisauthorizationisvaliduntilfurtherwrittennoticefromtheapplicant. PrintName:ChrisHuangTitle:Manager,Productcompliance Signature: OnbehalfofCompany:ArovastCorporation Telephone:7145091019 E-mail:[email protected]

ArovastCorporation We,ArovastCorporation declarethatthisEUT(FCCID:2ARBY-DUAL200S)doesn’thaveadHoc Mode function on “US/Canada frequencies“. In addition, the frequency selection feature is disabled by firmware for devices marketed to the US/ Canada. For DTS part of this device, onlychannels1-11willbeusedinNorthAmerica.Countrycodeselectionisdisabled. Should you have any questions or comments regarding this matter, Please have my best attention. Sincerelyyours, PrintName:ChrisHuangTitle:Manager,Productcompliance Signature: OnbehalfofCompany:ArovastCorporation Telephone:7145091019 E-mail:[email protected]

ArovastCorporation TO: FederalCommunicationCommission EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MID21046 Regarding: ConfidentialityRequestregardingapplicationforFCCID:2ARBY-DUAL200S LONGTERMCONFIDENTIALITY Pursuantto47CFRSection0.459and0.457ofthecommission’srules,theapplicantherebyrequestconfidential treatmentofthedocumentslistedbelow,associatedwiththecertificationapplicationreferencedabove. Schematic(s) BlockDiagrams OperationalDescriptions Thedocumentsabovecontainproprietaryinformationnotreleasedtothepublic.Publicdisclosureofthis informationmayproveharmfultothebusinessoftheapplicant. SHORT TERM CONFIDENTIALITY Additionally, the applicant requests the following documents be held confidential until the device is marketed or 180 days from the grant date, whichever is less. If the device is marketed within 180 days of the Grant Date, the applicant will notify the TCB per FCC KDB 726920 D01 Confidentiality Request Procedures. External Photos Internal Photos Test Setup Photos User manual(s) Sincerely, PrintName:ChrisHuangTitle:Manager,Productcompliance Signature: OnbehalfofCompany: ArovastCorporation Telephone: 7145091019 E-mail: [email protected]

ApplicantDeclaration ApplicantDeclaration Rev:0.0 SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Legal Business Name Arovast Corporation Address 1202 N Miller St. Suite A,Anaheim,California 92806,United States Grantee Code 2ARBY FCC ID 2ARBY-DUAL200S Authorized Contact Name Chris Huang Contact Email [email protected] Contact Phone 7145091019 I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare; a) in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. b) in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for: (1) labeling the equipment with the exact FCC ID as specified in this application, (2) compliance statement labeling pursuant to the applicable rules, (3) compliance of the equipment with the applicable technical rules, c) if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC’s technical requirements. d) in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. e) in accordance with ISO17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements. (1) the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. (2) the Applicantshallmake provisions to always have a production sample available upon request by SGS, FCC and/or ISED. (3) the Applicantshall, upon request by SGS, at the Applicant’s expense, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f) neither the Applicant nor any party to the application is subject to a denial of Federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862 because of a conviction for possession or distribution of a controlled substance. See 47CFR 1.2002(b) for the definition of a “party” for these purposes. g) the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc.(TCB) terms and conditions. Link to CFRs:https://www.fcc.gov/wireless/bureau-divisions/technologies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs:https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100:https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Applicant Signature: Date: June 11, 2021 PrintName:ChrisHuang Title:Manager, Product compliance *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 9 External Photos for SZCR2105021165AT FCC ID: 2ARBY-DUAL200S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 9 1 EUT Constructional Details Test model: D200S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 9 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 9 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 9 Test model: LUH-D301S-WUSR SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 9 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 7 of 9 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 8 of 9 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 9 of 9

The product label will be screen printed in the middle of the bottom of the product.

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 11 Internal Photos for SZCR2105021165AT FCC ID: 2ARBY-DUAL200S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 11 1 EUT Constructional Details Test model: LUH-D301S-WUSR SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 11 Test model: D200S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 7 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 8 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 9 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 10 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 11 of 11

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116505 Page: 1 of 9 Keny Xu EMC Laboratory Manager 1 Cover page RF Exposure Evaluation Report Application No.: SZCR2105021165AT Applicant: Arovast Corporation Address of Applicant: 1202 N. Miller St. Suite A, Anaheim, CA 92806, USA Manufacturer: Arovast Corporation Address of Manufacturer: 1202 N. Miller St. Suite A, Anaheim, CA 92806, USA Factory: UNI-SPLENDOR TECHNOLOGY(HUI ZHOU)CORP. Address of Factory: Lidong Village, Baihua, Huidong county, Huizhou, Guangdong province, China Equipment Under Test (EUT): EUT Name: Levoit Smart Top-fill Humidifier Model No.: Dual 200S, LUH-D301S-WUSR, LUH-D301S-XXXX (X can represent 0 to 9, A to Z) ♣ ♣ ♣♣ ♣ Please refer to section 4.1 of this report which indicates which model was actually tested and which were electrically identical. Trade Mark: Levoit FCC ID: 2ARBY-DUAL200S Standards: 47 CFR PART 1, Subpart I, Section 1.1307 47 CFR PART 1, Subpart I, Section 1.1310 47 CFR PART 2, Subpart J, Section 2.1091 Date of Receipt: 2021-05-26 Date of Test: 2021-05-27 to 2021-06-08 Date of Issue: 2021-06-16 Test Result : PASS* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116505 Page: 2 of 9 2 Version Revision Record Version Chapter Date Modifier Remark 01 2021-06-16 Original Authorized for issue by: Leo Li/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116505 Page: 3 of 9 3 Contents Page 1 COVER PAGE .....................................................................................................................................................1 2 VERSION..............................................................................................................................................................2 3 CONTENTS ..........................................................................................................................................................3 4 GENERAL INFORMATION ................................................................................................................................4 4.1 GENERAL DESCRIPTION OF EUT ..........................................................................................................................4 4.2 TEST LOCATION ..................................................................................................................................................6 4.3 TEST FACILITY ...................................................................................................................................................6 4.4 DEVIATION FROM STANDARDS ............................................................................................................................6 4.5 ABNORMALITIES FROM STANDARD CONDITIONS ..................................................................................................6 4.6 OTHER INFORMATION REQUESTED BY THE CUSTOMER .........................................................................................6 5 RF EXPOSURE EVALUATION ..........................................................................................................................7 5.1 RF EXPOSURE COMPLIANCE REQUIREMENT .........................................................................................................7 5.1.1 Limits .......................................................................................................................................................7 5.1.2 Test Procedure .......................................................................................................................................7 5.1.3 EUT RF Exposure Evaluation................................................................................................................8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116505 Page: 4 of 9 4 General Information 4.1 General Description of EUT Power supply: DC 24V from adapter input AC 120V/60Hz Adapter Model: GQ24-240100-AU Input: 100-240V~50/60Hz 1.0A Max Output: 24.0V 1.0A Cable(s): DC Cable: 180cm unshielded For BT: Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V4.2 Dual mode Modulation Type: GFSK, pi/4DQPSK, 8DPSK Number of Channels: 79 Channel Spacing: 1MHz Spectrum Spread Technology: Frequency Hopping Spread Spectrum(FHSS) Antenna Type: PCB Antenna Antenna Gain: 3.28dBi For BLE: Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V4.2 Dual mode Modulation Type: GFSK Number of Channels: 40 Channel Spacing: 2MHz Antenna Type: PCB Antenna Antenna Gain: 3.28dBi For WiFi 2.4GHz: Operation Frequency: 802.11b/g/n(HT20): 2412MHz to 2462MHz;802.11n(HT40): 2422MHz to 2452MHz Modulation Type: 802.11b: DSSS (CCK, DQPSK, DBPSK);802.11g/n: OFDM (64QAM, 16QAM, QPSK, BPSK) Number of Channels: 802.11b/g/n(HT20):11;802.11n(HT40):7 Channel Spacing: 5MHz Antenna Type: PCB Antenna Antenna Gain: 3.28dBi SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116505 Page: 5 of 9 Remark: Model No.: Dual 200S, LUH-D301S-WUSR, LUH-D301S-XXXX (X can represent 0 to 9, A to Z) Only the model Dual 200S and LUH-D301S- WUSR were tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only different as below: Dual 200S with two touch button control (Power & Mist Level), but LUH-D301S-WUSR with four touch button control（Power, Mist Level, sleep mode, night light） Dual 200S without Nightlight, But LUH-D301S-WUSR with Nightlight, under such a difference will caused the PCB layout and the circuitry design are not exactly the same. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116505 Page: 6 …

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116503 Page: 1 of 55 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZCR2105021165AT Applicant: Arovast Corporation Address of Applicant: 1202 N. Miller St. Suite A, Anaheim, CA 92806, USA Manufacturer: Arovast Corporation Address of Manufacturer: 1202 N. Miller St. Suite A, Anaheim, CA 92806, USA Factory: UNI-SPLENDOR TECHNOLOGY(HUI ZHOU)CORP. Address of Factory: Lidong Village, Baihua, Huidong county, Huizhou, Guangdong province, China Equipment Under Test (EUT): EUT Name: Levoit Smart Top-fill Humidifier Model No.: Dual 200S, LUH-D301S-WUSR, LUH-D301S-XXXX (X can represent 0 to 9, A to Z) ♣ ♣ Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade Mark: Levoit FCC ID: 2ARBY-DUAL200S Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2021-05-26 Date of Test: 2021-05-27 to 2021-06-08 Date of Issue: 2021-06-16 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116503 Page: 2 of 55 Revision Record Version Chapter Date Modifier Remark 01 2021-06-16 Original Authorized for issue by: Leo Li/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116503 Page: 3 of 55 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Peak Output Power 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.9.1 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Minimum 6dB Bandwidth ANSI C63.10 (2013) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Power Spectrum Density ANSI C63.10 (2013) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement ANSI C63.10 (2013) Section 11.13.3.2 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2013) Section 11.11 47 CFR Part 15, Subpart C 15.247(d) Pass Radiated Emissions which fall in the restricted bands ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Below 1GHz ANSI C63.10 (2013) Section 6.4,6.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Above 1GHz ANSI C63.10 (2013) Section 6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Emission Part Item Standard Method Requirement Result Conducted Emissions at AC Power Line (150kHz-30MHz) 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.2 47 CFR Part 15, Subpart C 15.207 Pass Remark: Model No.: Dual 200S, LUH-D301S-WUSR, LUH-D301S-XXXX (X can represent 0 to 9, A to Z) Only the model Dual 200S and LUH-D301S- WUSR were tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only different as below: Dual 200S with two touch button control（Power & Mist Level）,but LUH-D301S-WUSR with four touch button control（Power, Mist Level, sleep mode, night light） Dual 200S without Nightlight, But LUH-D301S-WUSR with Nightlight, under such a difference will caused the PCB layout and the circuitry design are not exactly the same. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116503 Page: 4 of 55 3 Contents Page 1 COVER PAGE ..................................................................................................................................... 1 2 TEST SUMMARY ................................................................................................................................. 3 3 CONTENTS ......................................................................................................................................... 4 4 GENERAL INFORMATION .................................................................................................................. 6 4.1 DETAILS OF E.U.T. ......................................................................................................................... 6 4.2 DESCRIPTION OF SUPPORT UNITS .................................................................................................... 6 4.3 MEASUREMENT UNCERTAINTY ......................................................................................................... 6 4.4 TEST LOCATION ............................................................................................................................. 7 4.5 TEST FACILITY ............................................................................................................................... 7 4.6 DEVIATION FROM STANDARDS ......................................................................................................... 7 4.7 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................. 7 5 EQUIPMENT LIST ............................................................................................................................... 8 6 RADIO SPECTRUM TECHNICAL REQUIREMENT ............................................................................11 6.1 ANTENNA REQUIREMENT ................................................................................................................11 6.1.1 Test Requirement: ..................................................................................................................11 6.1.2 Conclusion ..............................................................................................................................11 7 RADIO SPECTRUM MATTER TEST RESULTS ..............................…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116504 Page: 1 of 135 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZCR2105021165AT Applicant: Arovast Corporation Address of Applicant: 1202 N. Miller St. Suite A, Anaheim, CA 92806, USA Manufacturer: Arovast Corporation Address of Manufacturer: 1202 N. Miller St. Suite A, Anaheim, CA 92806, USA Factory: UNI-SPLENDOR TECHNOLOGY(HUI ZHOU)CORP. Address of Factory: Lidong Village, Baihua, Huidong county, Huizhou, Guangdong province, China Equipment Under Test (EUT): EUT Name: Levoit Smart Top-fill Humidifier Model No.: Dual 200S, LUH-D301S-WUSR, LUH-D301S-XXXX (X can represent 0 to 9, A to Z)   Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade Mark: Levoit FCC ID: 2ARBY-DUAL200S Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2021-05-26 Date of Test: 2021-05-27 to 2021-06-08 Date of Issue: 2021-06-16 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116504 Page: 2 of 135 Revision Record Version Chapter Date Modifier Remark 01 2021-06-16 Original Authorized for issue by: Leo Li/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116504 Page: 3 of 135 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Peak Output Power 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.9.1 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Minimum 6dB Bandwidth ANSI C63.10 (2013) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Power Spectrum Density ANSI C63.10 (2013) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement ANSI C63.10 (2013) Section 11.13.3.2 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2013) Section 11.11 47 CFR Part 15, Subpart C 15.247(d) Pass Radiated Emissions which fall in the restricted bands ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Below 1GHz ANSI C63.10 (2013) Section 6.4,6.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Above 1GHz ANSI C63.10 (2013) Section 6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Emission Part Item Standard Method Requirement Result Conducted Emissions at AC Power Line (150kHz-30MHz) 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.2 47 CFR Part 15, Subpart C 15.207 Pass Remark: Model No.: Dual 200S, LUH-D301S-WUSR, LUH-D301S-XXXX (X can represent 0 to 9, A to Z) Only the model Dual 200S and LUH-D301S- WUSR were tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only different as below: Dual 200S with two touch button control（Power & Mist Level）,but LUH-D301S-WUSR with four touch button control（Power, Mist Level, sleep mode, night light） Dual 200S without Nightlight, But LUH-D301S-WUSR with Nightlight, under such a difference will caused the PCB layout and the circuitry design are not exactly the same. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZCR210502116504 Page: 4 of 135 3 Contents Page 1 COVER PAGE .............................................................................…

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