2BK4R-K02K02 Magnetic Assist

Shenzhen Renyi Tian Technology Co., Ltd. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Shenzhen Renyi Tian Technology Co., Ltd. Address: Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Product Name: K02 Magnetic Assist FCC ID: 2BK4R-K02 Model(s): K02 2.911(d)(5)(i) Equipment Type We, [Shenzhen Renyi Tian Technology 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: Turen Cao Date: Dec. 23, 2025 Title: Manager Company name: Shenzhen Renyi Tian Technology Co., Ltd. Signature: 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 Renyi Tian Technology Co., Ltd. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Renyi Tian Technology Co., Ltd. Address: Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Product Name: K02 Magnetic Assist FCC ID: 2BK4R-K02 Model(s): K02 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Renyi Tian Technology 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: Turen Cao Date: Dec. 23, 2025 Title: Manager Company name: Shenzhen Renyi Tian Technology Co., Ltd. Signature: 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 Renyi Tian Technology Co., Ltd. 2.911 (d)(7)USA Agentv1.3 Section 2.911(d)(7) USA Agent for Service of Process Company name: Shenzhen Renyi Tian Technology Co., Ltd. Address: Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Product Name: K02 Magnetic Assist FCC ID: 2BK4R-K02 Model(s): K02 2.911(d)(7) USA Designated Agent for Service of Process We, [Shenzhen Renyi Tian Technology Co., Ltd.] (“the applicant”) designate [Opuor INC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Shenzhen Renyi Tian Technology Co., Ltd. 2.911 (d)(7)USA Agentv1.3 USA Agent Company name: Opuor INC USA Address: 6510 S Academy Blvd Ste A 642, Colorado Springs, CO 80906, United States FRN Number: 0036496966 Contact Name: Shuiqing Yang Telephone No: (650) 315-6698 Email: [email protected] Applicant Company name: Shenzhen Renyi Tian Technology Co., Ltd. Address: Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China FCC Registration Number (FRN): 0035944628 FCC Grantee Code: 2BK4R Contact Name: Turen Cao Telephone No: 0755-60267229 Email: [email protected] Signature: Title: Manager Signature: Title: Manager Date: Dec. 23, 2025 Date: Dec. 23, 2025 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Shenzhen Renyi Tian Technology Co., Ltd. Agent Authorization Company: Shenzhen Renyi Tian Technology Co., Ltd. Address: Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Product Name: K02 Magnetic Assist Model Number(s): K02 Product Description: K02 Magnetic Assist 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: Dec. 23, 2025 Name: Turen Cao Title: Manager Company: Shenzhen Renyi Tian Technology Co., Ltd.

Shenzhen Renyi Tian Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Dec. 23, 2025 Subject; Request for Confidentiality FCC ID: 2BK4R-K02 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 Parts List Operational Description Tune-up Procedure 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to 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: Turen Cao Title: Manager

FCC ID LABEL: Ca. 25mm x 15mm Label Location FCC ID: 2BK4R-K02

FCC RF Exposure EUT Description: K02 Magnetic Assist Model No.: K02 FCC ID: 2BK4R-K02 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separation distance mm Result Limit SAR Test Exclusion BLE 2480 1.58 1±1(2) 1.585 5 0.499 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2511286364-E, antenna gain = -0.58dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.499 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Summary InvertedFAntennaSpecification ITEMANTSPEC ModelName2.4GANT Center Frequency HorizontalVertical 2400MHz 2450MHz 2500MHz2400MHz 2450MHz 2500MHz -1.26-0.76-0.58-5.25-2.46-1.86 MAX.Gain-0.58dBi PolarizationHorizontalandVertical AzimuthBeam Pattern Omni-directional Impedance50Ohm AntennaLength37.38mm AntennatypePCBAntenna ManufactureYichipMicroelectronics(Hangzhou)Co.,Ltd. TestCompanyTATechnology(Shanghai)Co.,Ltd. TestAddressBuilding1,No.400,FangchunRoad,China(Shanghai) PilotFreeTradeZone TestInstrumentKeysightE5071B PCBBuilt-in antenna LongyuElectronics(Meizhou)Co.,Ltd. LongyuPhaseIIIIndustrialPark,DongshengIndustrial Zone,MeijiangDistrict,MeizhouCity AntennaPhoto&Length(mm) Horizontal:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-40Scale:5/div Frequency (MHz) Gain(dBi) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-30Scale:5/div Frequency (MHz) Gain(dBi) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 3DRadiationPattern

Page 1 of 42 Report No.: HK2511286364-E FCC Test Report Test Report On Behalf of Shenzhen Renyi Tian Technology Co. , Ltd. For K02 Magnetic Assist Model No.: K02 FCC ID: 2BK4R-K02 Prepared For: Shenzhen Renyi Tian Technology Co. , Ltd. Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Nov. 28, 2025 ~ Dec. 22, 2025 Date of Report: Dec. 22, 2025 Report Number: HK2511286364-E Page 2 of 42 Report No.: HK2511286364-E Test Result Certification Applicant’s Name ................... : Shenzhen Renyi Tian Technology Co., Ltd. Address .................................... : Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Manufacturer's Name ............. : Shenzhen Renyi Tian Technology Co. , Ltd. Address .................................... : Floor 3, building A, 3 Tengfeng San Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City, China Product Description Trade Mark ................................. : N/A Product Name ............................ : K02 Magnetic Assist Model and/or Type Reference .. : K02 Standards ................................ : 47 CFR FCC Part 15 Subpart C 15.247 KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10: 2020 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test .............................................. : Date (s) of Performance of Tests ............... : Nov. 28, 2025 ~ Dec. 22, 2025 Date of Issue ............................................. : Dec. 22, 2025 Test Result ................................................. : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 42 Report No.: HK2511286364-E Contents Page 1 Summary ......................................................................................................................................................... 5 1.1 Test Procedures and Results .................................................................................................................... 5 1.2 Measurement Uncertainty ......................................................................................................................... 6 1.3 Information of the Test Laboratory ............................................................................................................ 6 2 General Information ....................................................................................................................................... 7 2.1 General Description of EUT ...................................................................................................................... 7 2.2 Description of Test Conditions .................................................................................................................. 9 2.3 Description of Test Setup ........................................................................................................................ 10 2.4 Description of Support Units .................................................................................................................... 11 3 Equipments List for All Test Items ............................................................................................................. 12 4 Test Result .................................................................................................................................................... 13 4.1 Antenna Requirement.............................................................................................................................. 13 4.2 AC Conduction Emissions Measurement ................................................................................................ 14 4.3 Radiated Emissions Measurement .......................................................................................................... 18 4.4 Maximum Peak Output Power Measurement ......................................................................................... 26 4.5 Power Spectral Density ........................................................................................................................... 27 4.6 6dB Bandwidth ........................................................................................................................................ 30 4.7 Occupied Bandwidth ................................................................................................................................ 33 4.8 Band Edge ............................................................................................................................................... 34 4.9 Conducted Spurious Emissions .............................................................................................................. 36 5 Test Setup Photos of the EUT .................................................................................................................... 40 6 Photos of the EUT ........................................................................................................................................ 42 Page 4 of 42 Report No.: HK2511286364-E ** Issued History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Dec. 22, 2025 Jason Zhou Page 5 of 42 Report No.: HK2511286364-E 1 Summary 1.1 Test Procedures and Results Note: 1. PASS: Test item meets…

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Test Model: K02 Radiated Emission AC Conducted Emission RF Conducted Emission