2AR82-SKIWB921AU1IEEE 802.11b/g/n/a/ac/ax 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.2

广州视琨电子科技有限公司 GuangzhouShikunElectronicTechnologyCompanyLimited 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 保密等级：机密 SPECIFICATION 产品规格书 SKI.WB921AU.1 IEEE802.11b/g/n/a/ac/ax2T2RUSBWiFiModule IntegratedBT2.1+EDR/4.2/5.2 ApprovedbyShikun Checkedby审核Recheckedby复审Approvedby批准 Pleasesendtheoriginalbacktousafteryouhaveapprovedandsigned. 客户承认签章后敬请寄回正本一份。 Approvedbycustomer Comments确认意见Approvedby批准签字Company’sseal盖章 Customer’sName: 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 REVISIONHISTORY. VERSIONDATEBOARDIDPAGEDESCRIPTION AUTHO R V02020.07.06SKI.WB921AU.1A20273AllFirstIssuedSan V1.02020.09.06SKI.WB921AU.1B20415AllChangePCB’sstructureSan V1.12020.10.06SKI.WB921AU.1C20523AllBlackPCBturntoGreenSan SKI.WB921AU.1 QR-ZZPJ-017A 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 1 Content 1.Introduction（简介） ............................................................................................................ 1 2.Features（特性） ................................................................................................................... 1 3.BlockDiagram（结构框图） ............................................................................................... 2 4.PackageOutlineandMounting（外形及安装尺寸） ................................................... 3 5.ProductPictures（实物图片） ............................................................................................ 5 6.KeyMaterials（关键物料） ................................................................................................. 6 7.GeneralRequirements（一般要求） ............................................................................... 6 8.ElectricalCharacteristics（电气特性） ........................................................................... 7 8.1IEEE802.11bSection(2.4GHz) .............................................................................. 7 8.2IEEE802.11gSection(2.4GHz) .............................................................................. 8 8.3IEEE802.11nHT20Section(2.4GHz) .................................................................. 9 8.4IEEE802.11nHT40Section(2.4GHZ) ............................................................... 10 8.5IEEE802.11axSection(2.4GHz) ......................................................................... 10 8.6IEEE802.11aSection(5GHz) ................................................................................ 12 8.7IEEE802.11nHT20Section(5GHz) ................................................................... 13 8.8IEEE802.11nHT40Section(5GHz) ................................................................... 13 8.9IEEE802.11acSection(5GHz) ............................................................................. 14 8.10IEEE802.11axSection(5GHz) ........................................................................... 15 8.11BluetoothSection .................................................................................................... 17 9.Mechanical,EnvironmentalandReliabilityTests（机械、环境和可靠性测试）18 10.ReferenceDesign（参考设计） ....................................................................................... 20 11.Package（包装） ................................................................................................................. 21 SKI.WB921AU.1 QR-ZZPJ-017A 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 1 1.Introduction （简介） SKI.WB921AU.1moduleisbasedonMediaTekMT7921AUsolution. MT7921Aisahighlyintegratedsinglechipwhichfeaturesalowpower2x211a/b/g/n/ac/ax dual-bandWi-FisubsystemandaBluetoothv5.2subsystem,offeringfeature-richwireless connectivityathighstandards,anddeliveringreliable,cost-effectivethroughputfromanextended distance. MT7921AUNdatarateupto800MbpswithUSB3.0.OptimizedRFarchitectureandbaseband algorithmsprovidesuperbperformanceandlowpowerconsumption.IntelligentMACdesign deploysahighefficientoffloadengine,andhardwaredataprocessingacceleratorswhichfully offloadsWi-Fitaskofthehostprocessor,MT7921Aisdesignedtosupportstandardbasedfeatures intheareasofsecurity,qualityofserviceandinternationalregulations,givingendusersthe greatestperformanceanytimeandinanycircumstance.Thisdocumentationdescribesthe engineeringrequirementsspecification. SKI.WB921AU.1模块基于联发科MT7921AU方案。MT7921A是一款高度集成的单芯片，符合2x2 11a/b/g/n/ac/ax标准，支持低功耗的双频Wi-Fi和蓝牙v5.2子系统，提供功能丰富的无线标准接口，以及可 靠、高效的远距离吞吐量。 MT7921AUN使用USB3.0高速接口，数据速率高达800Mbps，优化后的射频架构和基带算法提供了卓 越的性能，并且功耗很低。MAC部署了一个高效的卸载引擎和硬件数据处理加速器，可完全卸载主机处理器的 Wi-Fi任务。MT7921A安全、优异的性能，并且符合国际法律法规标准，无论何时何地都为用户提供最好的应 用体验。本文档描述了工程要求规范。 2.Features（特性） ReservingSystem 接收制式 IEEEStd.802.11a IEEEStd.802.11b IEEEStd.802.11g IEEEStd.802.11n IEEEStd.802.11ac IEEEStd.802.11ax BT2.1+EDR BT4.2 BT5.2withBLE(BTlowenergy) ChipSolution芯片方案 MT7921AU Band波段 2.4GHz&5GHz Dimensions尺寸30mm×23mm×2.6mm Model 型号 Installation Mode 安装方式 Protocoll 支持标准 Frequency 频段 Antenna 天线 Remark 备注 SKI.WB921AU.1SMD IEEE 802.11a/b/g/n/ac/ax BT2.1+EDR/4.2/5.2 2.4GHz/5GHz WiFi&BT: 一代Ipex 30mm×23mm× 2.6mm SKI.WB921AU.1 QR-ZZPJ-017A 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 2 3.BlockDiagram （结构框图） Powerpins GPIO Figure1SKI.WB921AU.1BlockDiagram GPIO/UART BT0BT1 MT7921A LNA BT1 RF PA Bluetoothsubsystem 1 WF/BTco-existinterface Wi-Fi subsystem PA 5GHzWF0TX/RX Hostinterface subsystem LNA PA 2.4GHzWF0AuxRX PA 5GHzWF1TX/RX 5GHzWF1AuxRX LNA PA 2.4GHzWF1AuxRX 2.4GHzWF1TX/RX BT0 RF PA Bluetoothsubsystem 0 LNA LNA LNA WF1 RF LNA LNA LNA WF0 RF 11ax2T2R MAC PTA BT1 MAC BT0 MAC Packet DMA System memory USB/ PCIe/ SDIO controller 32-bit RISCMCU System memory 32-bit RISCMCU System memory BT0 Baseband 11ax2T2R Baseband BT1 Baseband UART 32-bit RISCMCU D i p l e x e r T / R X S / W T / R X S / W T / R X S / W T / R X S / W SKI.WB921AU.1 QR-ZZPJ-017A 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 3 4.PackageOutlineandMounting （外形及安装尺寸） PinDefinition（引脚定义） 模组正视图 PINSYMBOLDESCRIPTION 1GNDGND 2NCNotconnect 3NCNotconnect 4GNDGND 5RESET PMURESET，内部10K上拉，低电平有效 6GNDGND 7GNDGND 83.3V 3.3V(DCDC单独供电，预留2A，纹波小于120mV) 93.3V 3.3V(DCDC单独供电，预留2A，纹波小于120mV) SKI.WB921AU.1 QR-ZZPJ-017A 版权CVTE所有，本文档内容属商业机密。未经允许，任何组织或个人不得以任何形式复制和传播。 …

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FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution: The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been 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 to 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 relocate 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. If power exceeds the limit and the distance（Over 20cm distance in actual use between the device and user） is compliant with the requirement FCC RF Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. The device must be professionally installed The intended use is generally not for the general public.It is generally for industry/commercial use. The connector is within the transmitter enclosure and can only be accessed by disassembly of the transmitter that is not normally required. the user has no access to the connector. Installation must be controlled. Installation requires special training Canada Statement This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. L'émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d'Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : 1)L'appareil ne doit pas produire de brouillage; 2)L'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Please notice that if the ISED certification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains IC: 24728-SKIWB921AU1” any similar wording that expresses the same meaning may be used. l'appareil hôte doit porter une étiquette donnant le numéro de certification du module d'Industrie Canada, précé dé des mots « Contient un module d'émission », du mot « IC: 24728-SKIWB921AU1 » ou d'une formulation similaire exprimant le même sens, comme suit The device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF exposure and compliance. Le dispositif rencontre l'exemption des limites courantes d'évaluation dans la section 2.5 de RSS 102 etla conformité à l'exposition de RSS-102 rf, utilisateurs peut obtenir l'information canadienne surl'exposition et la conformité de rf. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. Cet émetteur ne doit pas être Co-placé ou ne fonctionnant en même temps qu'aucune autre antenne ouémetteur. Cet équipement devrait être installé et actionné avec une distance minimum de 20 centimètres entre le radiateur et votre corps. This radio transmitter 24728-SKIWB921AU1 has been approved by Innovation, Science and Economic Development Canada to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. Le présent émetteur radio 24728-SKIWB921AU1 a été approuvé par Innovation, Sciences et Développement économique Canada pour fonctionner avec les types d'antenne énumérés ci-dessous et ayant un gain admissible maximal. Les types d'antenne non inclus dans cette liste, et dont le gain est supérieur au gain maximal indiqué pour tout type figurant sur la liste, sont strictement interdits pour l'exploitation de l'émetteur. The concrete contents to check are the following three points. １) Must use a PCB antenna such as WA-M-LB-02-164 with gain not exceeding 6.76dBi ２) Should be installed so that the end user cannot modify the antenna; ３) Feed line should be designed in 50ohm Fine tuning of return loss etc. can be performed using a matching network. Le contenu concret à vérifier sont les trois points suivants. １) doit utiliser une antenne comme WA-M-LB-02-…

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Guangzhou Shikun Electronics Co., Ltd Agent Authorization Company: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 Liankun Road, Huangpu District, Guangzhou, China Product Name: IEEE 802.11b/g/n/a/ac/ax 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.2 Model Number(s): SKI.WB921AU.1 Product Description: The model SKI.WB921AU.1 is IEEE 802.11b/g/n/a/ac/ax 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.2. 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: 2021/03/29 Name: Bing Yi Title: Certification Engineer Company: Guangzhou Shikun Electronics Co., Ltd

Guangzhou Shikun Electronics Co., Ltd Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021/5/25 Subject; Modular Transmitter Application Company name: Guangzhou Shikun Electronics Co., Ltd FCC ID: 2AR82-SKIWB921AU1 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 2AR82-SKIWB921AU1 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 module has a shield 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. The module is installed on the development board. The development board is connected to the computer through USB cable. The computer makes the module enter the test mode through software and instructions. The module must contain power supply regulation on the module. Yes, the module contains power supply regulation on the module. 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 module contains a unique antenna connector. The module must demonstrate compliance in a stand-alone configuration. Yes, it is fulfilled. The modular transmitter has PCB antenna. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). Yes, the module is labeled with its permanently affixed FCC ID label. 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, it is fulfilled. The modular transmitter was tested in a stand-alone configuration. FCC Modular Approval Request Rev 3.0 Guangzhou Shikun Electronics Co., Ltd The module must comply with RF exposure requirements Yes, it is fulfilled. The label is shown on the modular transmitter. 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 2.3 Summarize the specific operational use conditions 2.4 Limited module procedures 2.5 Trace antenna designs 2.6 RF exposure considerations 2.7 Antennas 2.8 Label and compliance information 2.9 Information on test modes and additional testing requirements 2.10 Additional testing, Part 15 Subpart B disclaimer Name: Bing Yi Date: 2021/5/25 Title: Certification Engineer Signature of applicant FCC Modular Approval Request Rev 3.0

Guangzhou Shikun Electronics Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021/03/29 Subject; Request for Confidentiality FCC ID: 2AR82-SKIWB921AU1 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 SDR software and security information 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: Bing Yi Title: Certification Engineer

Test Report No. FCC2021-0003 EUT Photograph (1) EUT Photo (2) Internal Photos Test Report No. FCC2021-0003 (3) EUT Photo (4) Antenna Photo

Test Report No. FCC2021-0003 EUT Photograph (1) EUT Photo (2) Internal Photos Test Report No. FCC2021-0003 (3) EUT Photo (4) Antenna Photo

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID:2AR82-SKIWB921AU1 Product:Module Model No.:SKI.WB921AU.1 Additional Model No.:N/A Trade Mark:N/A Report No.:TCT210521E012 Issued Date: May 20, 2021 Issued for: Applicant: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 LiankunRoad,HuangpuDistrict,Guangzhou,China Issued By: Shenzhen Tongce Testing Lab. TCT Testing Industrial Park,Fuqiao 5th Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, Guangdong, 518103, People's Republic of China TEL: +86-755-27673339 FAX: +86-755-27673332 Note:This report shall not be reproduced except in full, without the written approval of Shenzhen Tongce Testing Lab. This document may be altered or revised by Shenzhen Tongce Testing Lab. personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT210521E012 Page 2 of 9 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TABLE OF CONTENTS 1. Test Certification ..................................................................................... 3 2. EUT Description ....................................................................................... 4 3. General Information ................................................................................. 5 3.1. Test environment and mode ............................................................................................................ 5 3.2. Description of Support Units ........................................................................................................... 5 4. Facilities and Accreditations .................................................................. 6 4.1. Facilities ............................................................................................................................................. 6 4.2. Location.............................................................................................................................................. 6 5. Test Results and Measurement Data ..................................................... 7 Report No.: TCT210521E012 Page 3 of 9 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1.Test Certification Product: Module Model No.: SKI.WB921AU.1 Additional Model No.: N/A Trade Mark: N/A Applicant: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 LiankunRoad,HuangpuDistrict,Guangzhou,China Manufacturer: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 LiankunRoad,HuangpuDistrict,Guangzhou,China Date of Test: May 01, 2021–May 20, 2021 Applicable Standards: FCC CFR47 Part 2.1091(2021) FCC CFR47 Part 1.1310(2021) FCC KDB 447498 D01 General RF Exposure Guidance v06 The above equipment has been tested by Shenzhen Tongce Testing Lab.and found compliance with the requirements set forth in the technical standards mentioned above. The results of testing in this report apply only to the product/system, which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Tested By: Date: May 20, 2021 Aaron Mo Reviewed By: Date: May 20, 2021 Beryl Zhao Approved By: Date: May 20, 2021 Tomsin Report No.: TCT210521E012 Page 4 of 9 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2.EUT Description Product: Module Model No.: SKI.WB921AU.1 Additional Model No.: N/A Trade Mark: N/A Operation Frequency: WIFI 2.4GHz/BT/BLE: 2400~2483.5MHz WIFI 5GHz: 5150~5250MHz, 5250~5350MHz, 5470~5725MHz, 5725-5850MHz Modulation Technology: BT: GFSK, Pi/4 QDPSK, 8DPSK BLE: GFSK WIFI 2.4GHz: DSSS, OFDM WIFI 5GHz: OFDM Antenna Type: External antenna Antenna Gain: WIFI Antenna 1: 1.5 dBi(provided by client) WIFI Antenna 2: 1.5 dBi (provided by client) Bluetooth(Low Energy) Antenna 1: 1.5 dBi(provided by client) Bluetooth(Low Energy) Antenna 2: 1.5 dBi(provided by client) Power Supply: Rechargeable Li-ion Battery DC3.3V Remark: / Report No.: TCT210521E012 Page 5 of 9 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3.GeneralInformation 3.1.Test environment and mode Operating Environment: Temperature: 25.0 C Humidity: 56 % RH Atmospheric Pressure: 1010 mbar 3.2.Description of Support Units The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Equipment Model No. Serial No. FCC ID Trade Name / / / / / Report No.: TCT210521E012 Page 6 of 9 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 4.Facilities and Accreditations 4.1.Facilities The test facility is recognized, certified, or accredited by the following organizations: ● FCC - Registration No.: 645098 Shenzhen Tongce Testing Lab The 3m Semi-anechoic chamber has been registered and fully described in a report with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. ● IC - Registration No.: 10668A-1 The 3m Semi-anechoic chamber of Shenzhen TCT Testing Technology Co., Ltd. has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing 4.2.Location Shenzhen Tongce Testing Lab Address: TCT Testing Industrial Park, Fuqiao 5th Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, Guangdong, 518103, People's Republic of China TEL: +86-755-27673339 Report No.: TCT210521E012 Page 7 of 9 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 5.Test Results and Measurement Data According to KDB 447498 D01, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guidel…

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TEST REPORT FCC ID 2AR82-SKIWB921AU1 IC : 24728-SKIWB921AU1 Applicant : Guangzhou Shikun Electronics Co., Ltd Product Name : Module Mode No. : SKI.WB921AU.1 CVC Testing Technology Co., Ltd. Test Report No.: FCC2021-0003-1 CVC Testing Technology Co., Ltd. Test Report No. FCC2021-0003-1(XG1) Page 2 of 118 LTC-R-7092-RF-Part15C-A1 Applicant Name: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 Liankun Road,Huangpu District,Guangzhou,China Manufacturer Name: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 Liankun Road,Huangpu District,Guangzhou,China Equipment Under Test Product Name : Module Model No. : SKI.WB921AU.1 Trade mark : / Serial no. : — Sampling : — Date of Receipt. 2021.02.25 Date of Testing 2021.02.25~2021.04.12 Test Specification Test Result FCC CFR47 Part 15C (2020) Radio Frequency Devices RSS -247 Issue 2 RSS-Gen Issue 5 ANSI C63.10 (2013) DA00-705 Filing and Frequency Measurement Guidelines For Frequency Hopping Spread Spectrum System (2000). PASS Evaluation of Test Result The equipment under test was found to comply with the requirements of the standards applied. Seal of CVC Issue Date: 2021.05.17 Tested by: Xu Zhenfei Reviewed by: Liu YongHai Approved by: Chen HuaWen Other Aspects: NONE. Abbreviations:OK, Pass= passed Fail = failed N/A= not applicable EUT= equipment, sample(s) under tested This test report relates only to the EUT, and shall not be reproduced except in full, without written approval of CVC. Note: The report was originally issued on April 20, 2021, and was modified for the first time on May 17, 2021. The modification contents are as follows: Add the description of the worst case; the modification is involved The page is the whole certification report with (XG1) symbol after the corresponding original report number. o compmppppppppppppppppppppppppppppplyylyylylyyylylyylylylyyylyylyylllylylylylylyyyyyyyyyyywiwiwiwwiwiwiwwiwwwwwiwiwwiwiiiiiiwwiwwwiwwwwwwiwwwithththththththttttthtthhhhhhhhhhhhhh the Seallalalalalalalalalalallllllllllll o f CVCVVCVVCVVVVCVCVVCVCVCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC suuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuue eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeDaDDaDaDDDDDDDDaDDDDDDDDDaDDDDDDDDDDDDDDaDDDDDDDDDDDDDte: 202122222222222.05555555555555555555555555555555.171711717171711171717171717117177171717177171717711717171717171717171111711717111171777 ed by::: CVC Testing Technology Co., Ltd. Test Report No. FCC2021-0003-1(XG1) Page 3 of 118 LTC-R-7092-RF-Part15C-A1 TABLE OF CONTENTS 1. GENERAL PRODUCT INFORMATION ................................................................................................... 4 1.1 GENERAL INFORMATION ............................................................................................................................ 4 2. TEST SITES ............................................................................................................................................... 5 2.1 TEST FACILITIES ........................................................................................................................................ 5 2.2 DESCRIPTION OF NON-STANDARD METHOD AND DEVIATIONS ................................................................. 5 2.3 LIST OF TEST AND MEASUREMENT INSTRUMENTS ................................................................................... 5 3. TEST CONFIGURATION .......................................................................................................................... 6 3.1 TEST MODE ............................................................................................................................................... 6 3.2 DUTY CYCLE .............................................................................................................................................. 7 4. SUMMARY OF MEASUREMENT RESULTS .......................................................................................... 8 5. MEASUREMENT PROCEDURE ............................................................................................................. 9 5.1 CONDUCTED EMISSION ............................................................................................................................. 9 5.2 RADIATED EMISSION ............................................................................................................................... 13 5.3 PEAK POWER OUTPUT -CONDUCTED ..................................................................................................... 31 5.4 20DB EMISSION BANDWIDTH .................................................................................................................. 33 5.5 OCCUPIED CHANNEL BANDWIDTH .......................................................................................................... 44 5.6 FREQUENCY SEPARATION ....................................................................................................................... 52 5.7 TIME OF OCCUPANCY (DWELL TIME) ...................................................................................................... 56 5.8 BAND EDGE MEASUREMENT ................................................................................................................... 71 5.9 NUMBER OF HOPPING FREQUENCY ..............................…

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