2AQ7V-KR840T01nRF52840 module

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V-Mark Enterprises Ltd. Agent Authorization Company: V-Mark Enterprises Ltd. Address: 400-601 West Broadway, Vancouver,British Columbia, Canada Product Name: nRF52840 module Model Number(s): VMZ-nRF52840-1 Product Description: nRF52840 module 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: Nov. 28, 2022 Name: George Zhang Title: General Manager Company: V-Mark Enterprises Ltd.

V-Mark Enterprises Ltd. FCC Modular Approval Request Rev 3.0 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Subject; Modular Transmitter Application Company name: V-Mark Enterprises Ltd. FCC ID: 2AQ7V-KR840T01 Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;- FCC KDB 996369 D01 ‘Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Equip Auth Guide v02’. FCC ID: 2AQ7V-KR840T01 has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. Yes, the modular has own shielding cover. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. Yes, The modular transmitter have buffered modulation/data inputs. The module must contain power supply regulation on the module. Yes, The modular transmitterhave its own power supply regulation. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per §§ 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). Yes, The modular transmitter comply with the antenna requirements of Section 15.203 and 15.204(c). The antenna either be permanently attached. The module must demonstrate compliance in a stand-alone configuration. Yes, The module can be configured independently and meets the requirements The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). Yes, The FCC ID on the product: 2AQ7V- KR840T01 The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. Yes, The module complies fully with the operating requirements of Part 15 section as demonstrated in the test report. The module must comply with RF exposure requirements Yes, The modular transmitter complies with this requirement, please refer to RF exposure report. V-Mark Enterprises Ltd. FCC Modular Approval Request Rev 3.0 Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist. Refer to the KDB for description of the complete requirements; KDB Ref Sect Requirements of KDB 996369 D03 User Manual Page Number reference 2.2 List of applicable FCC rules P10 2.3 Summarize the specific operational use conditions P10 2.4 Limited module procedures P11 2.5 Trace antenna designs P11 2.6 RF exposure considerations P12 2.7 Antennas P12 2.8 Label and compliance information P12 2.9 Information on test modes and additional testing requirements P12 2.10 Additional testing, Part 15 Subpart B disclaimer P13 Name: George Zhang Date: Dec. 06, 2022 Title: General Manager Signature of applicant:

V-Mark Enterprises Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Nov. 28, 2022 Subject; Request for Confidentiality FCC ID: 2AQ7V-KR840T01 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 Software Security Requirement 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 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: George Zhang Title: General Manager

Annex A External Photos Report No.: HK2211165131-E Page 1 of 2 Report No.: HK2211165131-E Page 2 of 2

FCC ID LABEL: Ca. 10mm x 10mm Label Location FCC ID: 2AQ7V-KR840T01

Annex B Internal Photo Report No.: HK2211165131-E Page 1 of 2 Report No.: HK2211165131-E Page 2 of 2 Antenna

MPE ESTIMATION FCC ID: 2AQ7V-KR840T01 1, Limit for General Population/ Uncontrolled Exposures Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/1500 30 1.5GHz---100GHz 1.0 30 2, Estimation Result Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (linear) MPE (mW/cm²) 2480 7.38 7±1(8) 6.31 1.06 1.28 0.00161 Note: Note: The estimation distance is 20cm Note: PK Output power= conducted power. Conducted power see the test report HK2211165131-E. Gantenna gain=1.06dBi when the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.00161mW/cm² which is< 1.0mW/cm², RF Exposure testing is not required. -------The End-------

Report No.: BL-SZ22B0596-901(G1) Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 19 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China TEST REPORT Applicant: Jingrui Inspire Co., Ltd. Address: RM1306, Block 3 (C-1), Runhui Science Park,18 Shenzhou Rd., Huangpu Dist., Guangzhou, Guangdong Prov., P.R. China, 510663 Equipment Type: nRF52840 Module Model Name: VMZ-nRF52840-1 Brand Name: V-MARK Test Standard: ANSI/IEEE Std 149-1979 (refer section 3.1) Test Date: Nov. 14, 2022 Date of Issue: Nov. 21, 2022 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Mai Jintian Checked by: Tolan Tu Approved by: Wei Yanquan (Chief Engineer) _______________ _______________ _______________ Report No.: BL-SZ22B0596-901(G1) Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 19 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Revision History Version Issue Date Revisions Rev. 01 Nov. 21, 2022 Added the test method and test data of return loss. This report replaces BL- SZ22B0596-901 which was issued by BALUN on Nov. 18, 2022, the original report is invalid. TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 4 1.1 Test Laboratory ................................................................................................................... 4 1.2 Test Location ....................................................................................................................... 4 2 PRODUCT INFORMATION ....................................................................................................... 5 2.1 Applicant Information ........................................................................................................... 5 2.2 Manufacturer Information .................................................................................................... 5 2.3 Factory Information ............................................................................................................. 5 2.4 General Description for Equipment under Test (EUT) ......................................................... 5 2.5 Ancillary Equipment ............................................................................................................. 5 2.6 Technical Information .......................................................................................................... 5 3 SUMMARY OF TEST RESULTS ............................................................................................... 6 3.1 Test Standards .................................................................................................................... 6 3.2 Test Verdict ......................................................................................................................... 6 3.3 Test Uncertainty .................................................................................................................. 6 4 GENERAL TEST CONFIGURATIONS ...................................................................................... 7 4.1 Test Condition ..................................................................................................................... 7 4.2 Test Equipment List ............................................................................................................. 7 4.3 Test Setup ........................................................................................................................... 8 ANNEX A TEST RESULTS ........................................................................................................... 9 A.1 Gain and Efficiency ............................................................................................................. 9 A.2 VSWR ............................................................................................................................... 11 A.3 Return Loss ....................................................................................................................... 12 Report No.: BL-SZ22B0596-901(G1) Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 19 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China ANNEX B RADIATION PATTERN .............................................................................................. 13 ANNEX C TEST SETUP PHOTO ................................................................................................ 16 ANNEX D EUT PHOTO .............................................................................................................. 18 Report No.: BL-SZ22B0596-901(G1) Tel: +86-755-66850100 E-mail: [email protected] Page No. 4 / 19 Web: www.titcgroup.com Template No.: TRP-Passive-EN (2022-01-12) Add: Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1 GENERAL INFORMATION 1.1 Test Laboratory Name Shenzhen BALUN Technology Co., Ltd. Address Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China Phone Number +86 755 6685 0100 1.2 Test Location Name Shenzhen BALUN Technology Co., Ltd. Location Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park, No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China Report No.: BL-SZ22B0596-901(G1) Tel: +86-755-66850100 E-mail: [email protected]…

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Page 1 of 41 Report No.: HK2211165131-E TEST REPORT FCC PART 15 SUBPART C 15.247 Test report On Behalf of V-Mark Enterprises Ltd. For nRF52840 module Model No.: VMZ-nRF52840-1 FCC ID: 2AQ7V-KR840T01 Prepared For : V-Mark Enterprises Ltd. 400-601 West Broadway, Vancouver,British Columbia, Canada 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. 16, 2022 ~ Nov. 29, 2022 Date of Report: Nov. 29, 2022 Report Number: HK2211165131-E Page 2 of 41 Report No.: HK2211165131-E TEST RESULT CERTIFICATION Applicant’s name ................... : V-Mark Enterprises Ltd. Address .................................... : 400-601 West Broadway, Vancouver,British Columbia, Canada Manufacture's Name .............. : Jingrui Inspire Co.,Ltd. Address .................................... : RM1306, Block 3 (C-1), Runhui Science Park,18 Shenzhou Rd., Huangpu Dist., Guangzhou, Guangdong Prov., P.R. China, 510663 Product description Trade Mark: V-MARK Product name ............................. : nRF52840 module Model and/or type reference .. : VMZ-nRF52840-1 Standards ................................ : 47 CFR FCC Part 15 Subpart C 15.247 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. 16, 2022 ~ Nov. 29, 2022 Date of Issue ............................................. : Nov. 29, 2022 Test Result ................................................. : Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 41 Report No.: HK2211165131-E Contents Page 1 TEST SUMMARY ............................................................................................................................................ 6 1.1 TEST DESCRIPTION ................................................................................................................................ 6 1.2 MEASUREMENT UNCERTAINTY ............................................................................................................ 7 1.3 INFORMATION OF THE TEST LABORATORY ....................................................................................... 7 2 GENERAL INFORMATION ............................................................................................................................. 8 2.1 GENERAL DESCRIPTION OF EUT .......................................................................................................... 8 2.2 DESCRIPTION OF TEST CONDITIONS ................................................................................................... 9 2.3 DESCRIPTION OF TEST SETUP ........................................................................................................... 10 3 EQUIPMENTS LIST FOR ALL TEST ITEMS ............................................................................................... 11 4 TEST RESULT .............................................................................................................................................. 13 4.1 ANTENNA REQUIREMENT .................................................................................................................... 13 4.1.1 Standard requirement ...................................................................................................................... 13 4.1.2 EUT Antenna ................................................................................................................................... 13 4.2 CONDUCTION EMISSIONS MEASUREMENT ...................................................................................... 14 4.2.1 Applied procedures / Limit ............................................................................................................... 14 4.2.2 Test procedure ................................................................................................................................. 14 4.2.3 Test setup ........................................................................................................................................ 15 4.2.4 Test results ...................................................................................................................................... 16 4.3 RADIATED EMISSIONS MEASUREMENT............................................................................................. 17 4.3.1 Applied procedures / Limit ............................................................................................................... 17 4.3.2 Test setup ........................................................................................................................................ 17 4.3.3 Test Result ....................................................................................................................................... 19 4.4 MAXIMUM OUTPUT POWER MEASUREMENT .................................................................................... 26 4.4.1 Limit ................................................................................................................................................. 26 4.4.2 Test procedure ................................................................................................................................. 26 4.4.3 Deviation from standard ................................................................................................................... 26 4.4.4 Test setup ................................…

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Radiated Emission