2A56Z-18NLED Ring Light

Wuhanchenyikejiyouxiangongsi Model Difference 2022.04.06 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA RE: LETTER OF MODEL DIFFERENCE EUT NAME: LED Ring Light FCC ID: 2A56Z-18N MODEL: 18N, 10N, 12N, 14S, 16NS, 17P, 18S, 18RGB, 19NS, 21N, 21S All the model are the same circuit and RF module, except model names. Regards Sincerely Client’s signature Client’s name / title : Y.W. Huang /Manager Contact information / WenhuaxueyuanchuangyejidiA01-26Shi, Wuhan Hubei, China.

Wuhanchenyikejiyouxiangongsi Authorization Company: Wuhanchenyikejiyouxiangongsi Address: Donghuxinjishukaifaquwenhuayuanlu8hao WenhuaxueyuanchuangyejidiA01-26Shi, Wuhan Hubei, China. Product Name: LED Ring Light Model Number(s): 18N 10N, 12N, 14S, 16NS, 17P, 18S, 18RGB, 19NS, 21N, 21S Product Description: LED Ring Light 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: 2022/04/07 Name: Y.W. Huang Title: Manager Company: Wuhanchenyikejiyouxiangongsi

Wuhanchenyikejiyouxiangongsi Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/04/07 Subject; Request for Confidentiality FCC ID: 2A56Z-18N 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: Y.W. Huang Title: Manager

External Photos Infrared remote Controller

Label & label location 3 20 mm*10mm FCC ID: 2A56Z-18N Label location

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID:2A56Z-18N Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. T he 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 T he 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. BLE Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low -2.84 30 GFSK Middle -3.57 30 GFSK High -4.3 30 max possible output power (PK,conducted)：-2±1dBm 0dBi logarithmic terms convert to numeric result is nearly 1.0 -1dBm=0.79mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 0.79/5*√2.402=0. 25≤3.0 2440MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 0.79/5*√2.440=0. 25≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 0.79/5*√2.48=0.25≤3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

No.：BCTC/RF-EMC-005 Page: 1 of 43 Edition：A.4 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2203819314E Applicant: Wuhanchenyikejiyouxiangongsi Product Name: LED Ring Light Model/Type Ref.: 18N Tested Date: 2022-03-07 to 2022-03-31 Issued Date: 2022-03-31 Report No.: BCTC2203819314E No.：BCTC/RF-EMC-005 Page: 2 of 43 Edition：A.4 FCC ID:2A56Z-18N 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 BCTC Testing 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: LED Ring Light Trademark: N/A Model/Type Ref.: 18N 10N, 12N, 14S, 16NS, 17P, 18S, 18RGB, 19NS, 21N, 21S Prepared For: Wuhanchenyikejiyouxiangongsi Address: Donghuxinjishukaifaquwenhuayuanlu8hao WenhuaxueyuanchuangyejidiA01-26Shi, Wuhan Hubei, China. Manufacturer: Wuhanchenyikejiyouxiangongsi Address: Donghuxinjishukaifaquwenhuayuanlu8hao WenhuaxueyuanchuangyejidiA01-26Shi, Wuhan Hubei, China. Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China. Sample Received Date: 2022-03-07 Sample tested Date: 2022-03-07 to 2022-03-31 Issue Date: 2022-03-31 Report No.: BCTC2203819314E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth BLE radio test report. Tested by: Approved by: Jeff.Fu/Project Handler Zero Zhou/Reviewer Report No.: BCTC2203819314E No.：BCTC/RF-EMC-005 Page: 3 of 43 Edition：A.4 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 8 4.3 Support Equipment ............................................................................................... 8 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ............................................................................................................. 9 4.6 Table Of Parameters Of Text Software Setting ..................................................... 9 5. Test Facility And Test Instrument Used ............................................................... 10 5.1 Test Facility ......................................................................................................... 10 5.2 Test Instrument Used .......................................................................................... 10 6. Conducted Emissions .......................................................................................... 12 6.1 Block Diagram Of Test Setup .............................................................................. 12 6.2 Limit .................................................................................................................... 12 6.3 Test Procedure ................................................................................................... 12 6.4 EUT Operating Conditions .................................................................................. 13 7. Radiated Emissions ............................................................................................. 14 7.1 Block Diagram Of Test Setup .............................................................................. 14 7.2 Limit .................................................................................................................... 15 7.3 Test Procedure ................................................................................................... 16 7.4 EUT Operating Conditions .................................................................................. 17 7.5 Test Result .......................................................................................................... 18 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 22 8.1 Block Diagram Of Test Setup .............................................................................. 22 8.2 Limit .................................................................................................................... 22 8.3 Test Procedure ................................................................................................... 23 8.4 EUT operating Conditions ................................................................................... 23 8.5 Test Result .......................................................................................................... 24 9. Power Spectral Density Test ............................................................................... 25 9.1 Block Diagram Of Test Setup .............................................................................. 25 9.2 Limit .................................................................................................................... 25 9.3 Test Procedure ................................................................................................... 25 9.4 EUT Operating Conditions .................................................................................. 25 9.5 Test Result ...............................................................................................…

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Report No.: BCTC2203819314E No.：BCTC/RF-EMC-00 5 Page: 42 of 43 Edition：A.4 15. EUT Test Setup Photographs Radiated Measurement Photos