2A7CN-YYM816MWAroma humidifier

： FCC WARNING This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) thi s device may not cause harmful interference, and (2) thi s device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance co ul d void the user's authority to operate the equipment. NOTE: Th is equipment has bee n tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed t o provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or r elocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. To maintain compliance with FCC’s RF Exposure guidelines, Thi s equipment should be installed and operated with minimum 20cm distance between the radiator and your body: Use only the sup plie d antenna.

Shenzhen Xindaxing Electronic Technology Co., Ltd. Agent Authorization Company: Shenzhen Xindaxing Electronic Technology Co., Ltd. Ltd.Address: 5th Floor, Building C2, Hengfeng Industrial City, No. 739, Zhoushi Road, Hezhou District, Hangcheng Street, Baoan District, Shenzhen China Product Name: Aroma humidifier Model Number(s): YYM816MW, YYM831MW, YYM812MW, YYM813MW, YYM814MW, YYM815MW, YYM817MW, YYM818MW, YYM819MW, YYM820MW, YYM821MW, YYM822MW, YYM823MW, YYM824MW, YYM825MW, YYM826MW, YYM827MW, YYM828MW, YYM829MW, YYM830MW Product Description: Aroma humidifier We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022-06-09 Name: Shang Yongquan Title: quality manager Company: Shenzhen Xindaxing Electronic Technology Co., Ltd.

Shenzhen Xindaxing Electronic Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/06/09 Subject; Request for Confidentiality FCC ID: 2A7CN-YYM816MW 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 Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. 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: Shang Yongquan Title: quality manager

Shenzhen Xindaxing Electronic Technology Co., Ltd. Model Difference Data：2022.06.09 Product description: Aroma humidifier Model name: YYM940W YYM901W, YYM902W, YYM903W, YYM905W, YYM906W, YYM908W, YYM913W, YYM914W, YYM915W, YYM916W, YYM917W, YYM918W, YYM919W, YYM920W, YYM921W, YYM930W, YYM931W, YYM950W, YYM1002W Trade Name: YYM, XDX FCC ID: 2A7CN-YYM816MW All the model are the same circuit and RF module, except model names . Regards Sincerely Client’s signature : Client’s name / title : Shang Yongquan (quality manager) Contact information / address: 5th Floor, Building C2, Hengfeng Industrial City, No. 739, Zhoushi Road, Hezhou District, Hangcheng Street, Baoan District, Shenzhen China

External Photos

Model:YYM816MW FCC ID: 2A7CN-YYM816MW Label Location

Internal Photos ANT

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2A7CN-YYM816MW Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), 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 of the Commission’s guidelines. 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 Time |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 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz 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 Time |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 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna,R=20cm Test Result of RF Exposure Evaluation Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result ANT1 2.4G WIFI 802.11b MCH 15±1 16 31.3906 1.259 (1dBi) 0.00786 1 Pass

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220509007RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 62 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. This report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. Product Name: Aroma humidifier FCC ID: 2A7CN-YYM816MW Trademark: YYM, XDX Model Number: YYM816MW, YYM831MW, YYM812MW, YYM813MW, YYM814MW, YYM815MW, YYM817MW, YYM818MW, YYM819MW, YYM820MW, YYM821MW, YYM822MW, YYM823MW, YYM824MW, YYM825MW, YYM826MW, YYM827MW, YYM828MW, YYM829MW, YYM830MW Prepared For: Shenzhen Xindaxing Electronic Technology Co., Ltd. Address: 5th Floor, Building C2, Hengfeng Industrial City, No. 739, Zhoushi Road, Hezhou District, Hangcheng Street, Baoan District, Shenzhen Manufacturer: Shenzhen Xindaxing Electronic Technology Co., Ltd Address: 5th Floor, Building C2, Hengfeng Industrial City, No. 739, Zhoushi Road, Hezhou District, Hangcheng Street, Baoan District, Shenzhen Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 5th Floor, Building C2, Hengfeng Industrial City, No. 739, Zhoushi Road, Hezhou District, Hangcheng Street, Baoan District, Shenzhen Sample Received Date: Apr. 26, 2022 Sample tested Date: Apr. 26, 2022 to May, 09, 2022 Issue Date: May, 09, 2022 Report No.: CTB220509007RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is WIFI-2.4GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220509007RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 62 TABLE OF CONTENT Test Report Declaration Page 1. VERSION............................................................ 4 2. TEST SUMMARY ..................................................... 5 3. MEASUREMENT UNCERTAINTY ....................................... 6 4. PRODUCT INFORMATION AND TEST SETUP ........................... 7 4.1 Product Information ..................................................... 7 4.2 Test Setup Configuration ................................................ 8 4.3 Support Equipment ..................................................... 8 4.4 Channel List ........................................................... 9 4.5 Test Mode ............................................................. 9 4.6 Test Environment ....................................................... 9 5. TEST FACILITY AND TEST INSTRUMENT USED ........................ 10 5.1 Test Facility ........................................................... 10 5.2 Test Instrument Used .................................................. 10 6. AC POWER LINE CONDUCTED EMISSION .............................. 13 6.1 Block Diagram Of Test Setup............................................ 13 6.2 Limit ................................................................. 13 6.3 Test procedure ........................................................ 13 6.4 Test Result ........................................................... 15 7. RADIATED SPURIOUS EMISSION ..................................... 17 7.1 Block Diagram Of Test Setup............................................ 17 7.2 Limit ................................................................. 17 7.3 Test procedure ........................................................ 18 7.4 Test Result ........................................................... 19 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ............ 36 8.1 Block Diagram Of Test Setup............................................ 36 8.2 Limit ................................................................. 36 8.3 Test procedure ........................................................ 36 8.4 Test Result ........................................................... 37 9. COUDUCTED OUTPUT POWER....................................... 44 9.1 Block Diagram Of Test Setup............................................ 44 9.2 Limit ................................................................. 44 9.3 Test procedure ........................................................ 44 9.4 Test Result ........................................................... 45 10. 6DB OCCUPIED BANDWIDTH ........................................ 46 10.1 Block Diagram Of Test Setup .......................................... 46 10.2 Limit ................................................................ 46 10.3 Test procedure ....................................................... 46 10.4 Test Result .......................................................... 47 11. POWER SPECTRAL DENSITY ........................................ 53 11.1 Block Diagram Of Test Setup .......................................... 53 11.2 Limit ................................................................ 53 11.3 Test procedure ....................................................... 53 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220509007RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 62 11.4 Test Result .......................................................... 54 12. ANTENNA REQUIREMENT ........................................... 59 13. EUT PHOTOGRAPHS ................................................ 60 14. EUT TEST SETUP PHOTOGRAPHS ................................... 61 (Note: N/A means not applicable) Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220509007RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 62 1. VERSION Report No. Issue Date Description Approved CTB220509007RFX May,07, 2022 Original Valid Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220509007RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 62 2. TEST SUMMARY The Product has been teste…

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Radiated Emission Below 1G Above 1GHz Conducted Emission