2BKNZ-RGB20MUSLED Strip Light

Shenzhen Double go Technical Co., Ltd. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Shenzhen Double go Technical Co., Ltd. Address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China Product Name: LED Strip Light FCC ID: 2BKNZ-RGB20MUS Model(s): RGB20MUS, SUSRGB, LPVCRGB20MUS, RGBPVC10M-US, SUSRGB20M, RGBIC3MUS, RGBIC5MUS, LUSRGB, LPVCRGB10MUS, LPVC10RGBUS, LUS10RGB, RGB-5M-US, TWWSUS, TWWSUS3M, TWWSUS10M, PVCRGB10MUS, PVCRGB5MUS, LPVCRGB30MUS, SUSRGB30M, LUSCT, CTO01, 50014, 816PVCRGB20MUS, 816PVCRGB10MUS, 24V-3US, 24V-5US 2.911(d)(5)(i) Equipment Type We, [Shenzhen Double go Technical Co., Ltd.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Lu Benwei Date: 2024/08/29 Title and Company name: Manager / Shenzhen Double go Technical Co., Ltd. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Double go Technical Co., Ltd. 2.911 (d)(5)(ii) Applicant Attestation v1.2 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Double go Technical Co., Ltd. Address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China Product Name: LED Strip Light FCC ID: 2BKNZ-RGB20MUS Model(s): RGB20MUS, SUSRGB, LPVCRGB20MUS, RGBPVC10M-US, SUSRGB20M, RGBIC3MUS, RGBIC5MUS, LUSRGB, LPVCRGB10MUS, LPVC10RGBUS, LUS10RGB, RGB-5M-US, TWWSUS, TWWSUS3M, TWWSUS10M, PVCRGB10MUS, PVCRGB5MUS, LPVCRGB30MUS, SUSRGB30M, LUSCT, CTO01, 50014, 816PVCRGB20MUS, 816PVCRGB10MUS, 24V-3US, 24V-5US 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Double go Technical Co., Ltd.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to § 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Lu Benwei Date: 2024/08/29 Title and Company name: Manager / Shenzhen Double go Technical Co., Ltd. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Double go Technical Co., Ltd. U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: AOCE Corporation Inc. FRN: 0033401381 Contact Name: Johnson.wang Address: 6547 N Academy Bivd #2266, Colorado Springs, CO,80918 United States Telephone No: +1-346-582-5234 Email: [email protected] This letter is to confirm that we (AOCE Corporation Inc.) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Date: 2024-08-29 Signed by (Printed Name/Title): The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Shenzhen Double go Technical Co., Ltd. FRN: 0035882323 FCC ID: 2BKNZ-RGB20MUS Contact Name: Lu Benwei Address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China Telephone No: 15626583586 Email: [email protected] Applicant Signature: Date: 2024-08-29 Signed by (Printed Name/Title): Lu Benwei / Manager

Shenzhen Double go Technical Co., Ltd. Agent Authorization Company: Shenzhen Double go Technical Co., Ltd. Address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China Product Name: LED Strip Light Model Number(s): RGB20MUS, SUSRGB, LPVCRGB20MUS, RGBPVC10M-US, SUSRGB20M, RGBIC3MUS, RGBIC5MUS, LUSRGB, LPVCRGB10MUS, LPVC10RGBUS, LUS10RGB, RGB-5M-US, TWWSUS, TWWSUS3M, TWWSUS10M, PVCRGB10MUS, PVCRGB5MUS, LPVCRGB30MUS, SUSRGB30M, LUSCT, CTO01, 50014, 816PVCRGB20MUS, 816PVCRGB10MUS, 24V-3US, 24V-5US 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: 2024/08/29 Name: Lu Benwei Title: Manager Company: Shenzhen Double go Technical Co., Ltd.

Shenzhen Double go Technical Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2024/08/29 Subject; Request for Confidentiality FCC ID: 2BKNZ-RGB20MUS 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: Lu Benwei Title: Manager

Shenzhen Double go Technical Co., Ltd. Model Difference 2024-08-29 EUT NAME: LED Strip Light FCC ID: 2BKNZ-RGB20MUS MODEL : RGB20MUS, SUSRGB, LPVCRGB20MUS, RGBPVC10M-US, SUSRGB20M, RGBIC3MUS, RGBIC5MUS, LUSRGB, LPVCRGB10MUS, LPVC10RGBUS, LUS10RGB, RGB-5M-US, TWWSUS, TWWSUS3M, TWWSUS10M, PVCRGB10MUS, PVCRGB5MUS, LPVCRGB30MUS, SUSRGB30M, LUSCT, CTO01, 50014, 816PVCRGB20MUS, 816PVCRGB10MUS, 24V-3US, 24V-5US All the model are the same circuit and RF module, except model names and appearance of the color. Regards Sincerely Client’s signature: Client’s name / title : Lu Benwei / Manager Contact information / address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China

Report No.: BCTC2408484671E External Photos Report No.: BCTC2408484671E Report No.: BCTC2408484671E Report No.: BCTC2408484671E Report No.: BCTC2408484671E

Size:20*10mm LED Strip Light FCC ID: 2BKNZ-RGB20MUS Label location

Report No.: BCTC2408484671E Internal Photos Report No.: BCTC2408484671E Antenna

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2BKNZ-RGB20MUS 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=0.2m TEST RESULTS Conclusion: For the max result: 0.00011≤ 1, compliance with FCC's RF Exposure Tune up Produce power Maximu m peak output power (dBm) Output power to antenn a (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result BLE -3±1 -2 0.63 0.88 (-0.57dBi) 0.00011 1 Pass

Antenna specification ITEM ANT SPEC Model Name 2.4G ANT MAX. Gain -0.57dBi Antenna Type PCB Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Manufacture Shenzhen ChuangYiTong Technology Co.,Ltd Address 3rd Floor, Building E, King'ao Park, Dasan Village,Fucheng Street, Longhua District, Shenzhen Gain and Efficiency Frequency E Total. dB(dBi) Efficiency( ) 2400MHz -0.57 22% 2410MHz -1.06 20% 2420MHz -1.08 20% 2430MHz -0.94 21% 2440MHz -1.15 21% 2450MHz -1.47 20% 2460MHz -1.48 20% 2470MHz -1.32 21% 2480MHz -1.40 21% 2490MHz -1.31 21% 2500MHz -1.28 22% VSWR Frequency RL（dB） SMITH（Ω） SWR 2400MHz -4.89 177.74 3.65 2450MHz -4.35 66.37 3.99 2500MHz -4.08 26.82 4.35 SMITH RL SWR Radiation Pattern Phi=0 Phi=90 Theta=90

No.：BCTC/RF-EMC-005 Page: 1 of 58 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2408484671E Applicant: Shenzhen Double go Technical Co., Ltd. Product Name: LED Strip Light Test Model: RGB20MUS Tested Date: 2024-08-16 to 2024-08-28 Issued Date: 2024-08-28 Report No.: BCTC2408484671E No.：BCTC/RF-EMC-005 Page: 2 of 58 Edition：B.2 FCC ID: 2BKNZ-RGB20MUS 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 Strip Light Trademark: Lamomo Model/Type reference: RGB20MUS SUSRGB, LPVCRGB20MUS, RGBPVC10M-US, SUSRGB20M, RGBIC3MUS, RGBIC5MUS, LUSRGB, LPVCRGB10MUS, LPVC10RGBUS, LUS10RGB, RGB-5M-US, TWWSUS, TWWSUS3M, TWWSUS10M, PVCRGB10MUS, PVCRGB5MUS, LPVCRGB30MUS, SUSRGB30M, LUSCT, CTO01, 50014, 816PVCRGB20MUS, 816PVCRGB10MUS, 24V-3US, 24V-5US Prepared For: Shenzhen Double go Technical Co., Ltd. Address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China Manufacturer: Shenzhen Double go Technical Co., Ltd. Address: Room 203 Building B2, Fuhai Technology industrial Park, Fuyong Community, Fuyong Street, Baoan District, Shenzhen, Guangdong Province, 518100, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-08-16 Sample tested Date: 2024-08-16 to 2024-08-28 Issue Date: 2024-08-28 Report No.: BCTC2408484671E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth BLE radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2408484671E No.：BCTC/RF-EMC-005 Page: 3 of 58 Edition：B.2 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 ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ............................................................................................................. 9 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test Procedure ................................................................................................... 13 6.4 EUT Operating Conditions .................................................................................. 13 7. Radiated Emissions ............................................................................................. 18 7.1 Block Diagram Of Test Setup .............................................................................. 18 7.2 Limit .................................................................................................................... 19 7.3 Test Procedure ................................................................................................... 20 7.4 EUT Operating Conditions .................................................................................. 21 7.5 Test Result .......................................................................................................... 21 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 28 8.1 Block Diagram Of Test Setup .............................................................................. 28 8.2 Limit .................................................................................................................... 28 8.3 Test Procedure ................................................................................................... 29 8.4 EUT operating Conditions ................................................................................... 29 8.5 Test Result .......................................................................................................... 30 9. Power Spectral Density Test ............................................................................... 31 9.1 Block Diagram Of Test Setup .............................................................................. 31 9.2 Limit .....................................................................................…

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Report No.: BCTC2408484671E No.：BCTC/RF-EMC-005 Page: 55 of 58 Edition：B.2 15. EUT Test Setup Photographs Conducted emissions Photo DC 12V from adapter DC 24V from adapter Report No.: BCTC2408484671E No.：BCTC/RF-EMC-005 Page: 56 of 58 Edition：B.2 Radiated Measurement Photos DC 12V from adapter DC 24V from adapter Report No.: BCTC2408484671E No.：BCTC/RF-EMC-005 Page: 57 of 58 Edition：B.2