2ATLH-GDO518GDO51

BeijingManThinkTechnologyCo.,Ltd. 2.911(d)(7)USAAgentv1.5 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:BeijingManThinkTechnologyCo.,Ltd. Address:Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina FCCID:2ATLH-GDO518 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[BeijingManThinkTechnologyCo.,Ltd.]designate[LinkwldLLC] NOTE1 forthe purposeofacceptingserviceofprocessonbehalfoftheapplicant. Applicantconsent:Weacknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherwethegranteehavepermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S., orattheconclusionofanyCommission-relatedadministrativeorjudicialproceeding involvingtheequipment,whicheverislater. Agentobligation:Weacknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,orattheconclusionofanyCommission-relatedadministrativeor judicialproceedinginvolvingtheequipment,whicheverislater. USAAgentApplicant Companyname:LinkwldLLCCompanyname:BeijingManThink TechnologyCo.,Ltd. USAAddress:7595TechnologyWaySte 100,Denver,CO80237,US Address:Room904,JingKaiBuildingB DiShengNorthRoadNo.1,BDABeijing China FRNNumber:0033625682GranteeFRNNumber:0028550143 ContactName:TimothyZhu FCCGranteeCode:2ATLH TelephoneNo:(747)717-2691ContactName:JiaqiLuo Email:[email protected] TelephoneNo:18791763227 Email:[email protected] Signature: Title:Manager Signature: Title:Engineer Date:2026-01-20Date:2026-01-20 BeijingManThinkTechnologyCo.,Ltd. 2.911(d)(7)USAAgentv1.5 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

BeijingManthinkTechnologyCo.,Ltd. Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Jan.20,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2ATLH-GDO518 ProductName:GDO51 Thisletterservesasanattestationthattheequipmentidentifiedaboveisnot(selectone)"covered"software asdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,asoutlined inFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, PrintedName:JiaqiLuo Title:Engineer Address:Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina Tel.:18791763227 Email:[email protected] BeijingManthinkTechnologyCo.,Ltd. Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

BeijingManthinkTechnologyCo.,Ltd. Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:1/20/2026 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2ATLH-GDO518 BeijingManthinkTechnologyCo.,Ltd.certifiesthat,asofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002ofreferencechapter, asanentityproducing“covered”communicationequipment.Theequipmentforwhichauthorizationis soughtisnot“covered”telecommunicationsequipmentandvideosurveillanceequipmentproducedby entitiesidentifiedontheCommission’sCoveredListthatprohibitedfromreceivinganequipment authorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, PrintedName:JiaqiLuo Title:Engineer Address:Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina Tel.:18791763227 Email:[email protected]

BeijingManthinkTechnologyCo.,Ltd. Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina 1/20/2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2ATLH-GDO518 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow:  BlockDiagram Schematics  OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired. UserManual  InternalPhotos ExternalPhotos  TestSetupPhotos Sincerely, Title:Engineer Address:Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina Tel.:18791763227 Email:[email protected]

BeijingManthinkTechnologyCo.,Ltd. Room904,JingKaiBuildingBDiShengNorthRoadNo.1,BDABeijingChina 2026/1/20 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2ATLH-GDO518 I,theundersigned,herebyauthorize(ShenzhenAnbotekComplianceLaboratoryLimited.)toactonour behalfinallmattersrelatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenAnbotekComplianceLaboratoryLimited.)shallhavethesameeffectas ourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(Beijing ManthinkTechnologyCo.,Ltd.). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, PrintedName:JiaqiLuo Title:Engineer Tel.:18791763227 Fax:N/A Email:[email protected]

LabelLocation Confirmtheuseofrealappearancephotosasreferences Labelsize: （ L:33mm*W:21mm ） ProductName:GDO51 ModelNo.:GDO518 FCCID:2ATLH-GDO518

RFEXPOSUREEVALUATION KDB447498D01MobileandPortableDevicesRFExposureProceduresand EquipmentAuthorizationPoliciesv06. AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeused toevaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF) Radiationasspecifiedin§1.1307(b) EUTSpecification FCCID2ATLH-GDO518 EUT GDO51 Frequencyband(Operating)BT:2.402GHz~2.480GHz WLAN:2.412GHz~2.462GHz RLAN:5.180GHz~5.240GHz RLAN:5.260GHz~5.320GHz RLAN: 5.500 GHz~ 5.700 GHz RLAN:5.745GHz~5.825GHz Others:LORA:911MHz,915MHz,919MHz DevicecategoryPortable(<20cmseparation) Mobile(>20cmseparation) Others___ ExposureclassificationOccupational/Controlledexposure(S=5mW/cm2) GeneralPopulation/Uncontrolledexposure(S=1mW/cm2) AntennadiversitySingleantenna Multipleantennas Txdiversity Rxdiversity Tx/Rxdiversity Antennagain(Max)LORA:5dBi EvaluationappliedMPEEvaluation SAREvaluation LimitsforMaximumPermissibleExposure(MPE) Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) Power Density(mW/cm 2 ) Average Time (A)LimitsforOccupational/ControlExposures 300-1500----F/3006 1500-100000----56 (B)LimitsforGeneralPopulation/UncontrolExposures 300-1500----F/15006 1500-100000----130 Friistransmissionformula:Pd=(Pout*G)\(4*pi*R2) Where Pd=PowerdensityinmW/cm 2 Pout=outputpowertoantennainMw G=gainofantennainlinearscale Pi=3.1416 R=distancebetweenobservationpointandcenteroftheradiatorincm PdthelimitofMPE,1mW/cm2.Ifweknowthemaximumgainoftheantenna andtotalpowerinputtotheantenna,throughthecalculation,wewillknowthe distancewheretheMPElimitisreached. MaxMeasurementResult OperatingMode Measured Power Tuneup tolerance Max.Tune upPower Antenna Gain Power densityat 20cm Power densityLimits (mW/cm 2 ) (dBm)(dBm)(dBm)(dBi)(mW/cm 2 ) Low21.84521.845±122.8550.12121 Middle21.86121.861±122.8650.12161 High21.93821.938±122.9450.12381 Result:PASS.

Page 1 of 34 FCC Test Report Report No.:1812C50685412501 Applicant:Beijing Manthink Technology Co., Ltd. Address: Room 904, JingKai Building B DiSheng North Road No.1, BDA Beijing China Product Name:GDO51 Report Date:2026-01-27 Shenzhen Anbotek Compliance Laboratory Limited #检测章# #资质章# Report No.:1812C50685412501Page 2 of 34 FCC ID: 2ATLH-GDO518 Contents 1. General Information ...............................................................................................................................6 1.1. Client Information ........................................................................................................................6 1.2. Description of Device (EUT) ........................................................................................................6 1.3. Auxiliary Equipment Used During Test........................................................................................7 1.4. Description of Test Modes...........................................................................................................7 1.5. Measurement Uncertainty ...........................................................................................................7 1.6. Additional Instructions .................................................................................................................7 1.7. Test Summary .............................................................................................................................8 1.8. Description of Test Facility ..........................................................................................................9 1.9. Disclaimer....................................................................................................................................9 1.10. Test Equipment List.................................................................................................................10 2. Antenna requirement ...........................................................................................................................12 2.1. Conclusion.................................................................................................................................12 3. Conducted Emission at AC power line ................................................................................................13 3.1. EUT Operation ..........................................................................................................................13 3.2. Test Setup .................................................................................................................................13 3.3. Test Data ...................................................................................................................................14 4. 6dB Bandwidth ....................................................................................................................................16 4.1. EUT Operation ..........................................................................................................................16 4.2. Test Setup .................................................................................................................................16 4.3. Test Data ...................................................................................................................................17 5. Maximum Conducted Output Power....................................................................................................18 5.1. EUT Operation ..........................................................................................................................18 5.2. Test Setup .................................................................................................................................18 5.3. Test Data ...................................................................................................................................18 6. Power Spectral Density .......................................................................................................................19 6.1. EUT Operation ..........................................................................................................................19 6.2. Test Setup .................................................................................................................................19 6.3. Test Data ...................................................................................................................................20 7. Emissions in non-restricted frequency bands ......................................................................................21 7.1. EUT Operation ..........................................................................................................................21 7.2. Test Setup .................................................................................................................................21 7.3. Test Data ...................................................................................................................................22 8. Emissions in restricted frequency bands (below 1GHz) ......................................................................23 8.1. EUT Operation ..........................................................................................................................23 8.2. Test Setup .................................................................................................................................24 8.3. Test Data ...................................................................................................................................25 9. Emissions in restricted frequency bands (above 1GHz)......................................................................27 9.1. EUT Operation ..........................................................................................................................27 9.2. Test Setup ........…

Text truncated - open the document above for the full version.

版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 1 项目 860-930MHz 5DB天线 书 名LoRaWAN频段 860-930MHz 版 HDHD料号-LORA-A-02 本 A 射频 确 李明 认 品质 确 徐勇 认 结构 P 吴伟 M 日 江 期 2018.10.26 客户项目名称 料号 客户项目名称： 客户项目编号： 客户确认 研发项目客户满意度调查（客户请针对我们的研发或PM管理人员工作进行一个评述，督促我们更 好服务于你） RF 技术人员□满意□基本满意□不满意 结构技术人员□满意□基本满意□不满意 项目管理（PM管理人员）□满意□基本满意□不满意 建议项说明： 天线图片： 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 2 目录 1 、封面 ··································································································· 1 2 、目录 ··································································································· 2 3 、产品图面 ··························································································· 3 4 、性能参数表 ······················································································· 45 、可靠性测试报告 5-8 5 、电气性能测试报告 ·········································································· 5-8 6 、可靠性测试报告 ··············································································· 9-13 6.1 盐雾试验 ······························································································ 9 6.2 淋雨试验 ······························································································· 10 6.3 恒温恒湿试验 ························································································ 11 6.4 高低温冷热冲击试验 ················································································ 12 6.5 振动试验 ······························································································ 13 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 3 3 、产品图面 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 4 4、电气性能 电气性能ElectricalSpecifications 频率范围 FrequencyRange860-930MHz 增益 Gain @860：5.13dBi @915：5.43dBi @920：5.70dBi @925：5.62dBi @930：5.52dBi 驻波比 VSWR ≤ 2.0 极化形式 PolarizationVertical 水平波瓣宽度 Horizontalbeamwidth360° 垂直波瓣宽度 Verticalbeamwidth45° 不圆度 Non-circularity1.5dB 输入阻抗 InputImpedance50Ω 功率容量 MaxInputPower20W 接口形式 ConnectorN-Male 机械性能MechanicalSpecifications 尺寸 Dimensions Φ25×800mm 天线罩材料 RadomeMaterialFiberglass 环境指标EnvironmentalSpecifications 工作温度 OperatingTemperature -40 °C-+60°C 应用 Application Outdoor 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 5 5、电气性能测试报告 5.1VSWR测试图 5.2天线单元波束方向图图片 : 10E-86010E-870 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 6 10E-88010E-890 10E-90010E-915 10E-92010E-925 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 7 10H-86010H-870 10H-88010H-890 10H-90010H-915 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 8 10H-92010H-925 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 9 6、可靠性试验报告 6．1盐雾测试 试验/试验项目 盐雾测试 检验单号 产品名称/规格 玻璃钢天线 试验数量：5PCS 送检日期:2017-09-15完成日期：2017-09-18 试验/检验设备： 1.HL-60-SS盐雾测试仪 试验/检验条件： 1.盐雾箱内温度为35±2°C；试验室温度22~30°C 2.盐雾沉降速度经24H喷雾后每80cm面积上为1-2ML/h氯化钠浓度为50±10g/L，PH值 为6.5/7.2。 判定标准: 1.盐雾试验后电镀层不可有生锈、发黑、铜绿、起泡、镀层脱落等腐蚀现象。 2.玻璃钢涂层不可有腐蚀、脱落、起泡。 试验/检验结果：合格 样品编号评价等级缺陷描述 1合格无 2合格无 3合格无 4合格无 5合格无 试验/检验判定：□合格□不合格□不作判定 测试：卓伟传审核：李先瑜核准：夏伟明 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 10 6．2淋雨测试 试验/试验项目 淋雨测试 检验单号 产品名称/规格 玻璃钢天线 试验数量：5PCS 送检日期:2016-07-13完成日期：2016-07-14 试验/检验设备： 1.CX-L125淋雨测试仪 试验/检验条件： 水流量按摆管的喷水孔数计算，每孔为0。07L/min，淋水时，摆动喷水角度设定为100°， 摆动速度为3转/分钟，喷水压力调节到0.2Pma，测试转盘转数调节到50，连续淋水10分钟 试验/检验结果：合格 样品编号评价等级缺陷描述 1没有水侵入产品内部无 2没有水侵入产品内部无 3没有水侵入产品内部无 4没有水侵入产品内部无 5没有水侵入产品内部无 试验/检验判定：□合格□不合格□不作判定 测试：卓伟传审核：李先瑜核准：夏伟明 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 11 6．3恒温恒湿试验 试验/试验项目 恒温恒湿试验 检验单号 产品名称/规格玻璃钢天线试验数量：5PCS 送检日期:2015-07-20完成日期：2015-07-21 试验/检验设备： 1.可程式恒温恒湿实验箱 2.网络分析仪 试验/检验条件： 1.常温25°C,湿度65%下试验 2.+80°85～90%RH4小时一个循环，共24小时； 试验结果 判定标准： 1、金属表面镀层应无剥落，裂痕起皱，分离等；非金属部分不应发生变色，开裂，变形，脱胶 等不良； 2、电气测试符合标准要求：电压驻波比测试合格 检验项目恒温恒湿试验前恒温恒湿试验后缺陷描述判定结果 外观 外观无变色开裂、变 形、脱胶 外观无变色开裂、变形、 脱胶 无合格 电性能 天线电压驻波比测试 合格 天线电压驻波比测试合 格 无合格 试验/检验判定：□合格□不合格□不作判定 测试：卓传伟审核：李先瑜核准：夏伟明 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 12 6．4高低温冷热冲击 试验/试验项目 高低温冷热冲击 检验单号 产品名称/规格玻璃钢天线试验数量：5PCS 送检日期:2016-07-23完成日期：2016-07-25 试验/检验设备： 1.冷热冲击试验箱 2.网络分析仪 试验/检验条件： -40°C（2H）-间隔2H+80°C（2H），12次循环，共48小时 试验结果 判定标准： 1、金属表面镀层应无剥落，裂痕起皱，分离等；涂层部分不应发生变色，开裂，变形，脱胶等 不良； 2、电气测试符合标准：电压驻波比测试合格。 检验项目高低温冷热冲击试验前高低温冷热冲击试验后缺陷描述判定结果 外观 外观无变色开裂、变形、 脱胶 外观无变色开裂、变形、 脱胶 无合格 电性能 天线电压驻波比测试合 格 天线电压驻波比测试合 格 无合格 试验/检验判定：□合格□不合格□不作判定 测试：卓传伟审核：李先瑜核准：夏伟明 版本：A表单编号：HD-QR-EN-0020保存期限：5年生效日期：2019-2-15 13 6．5振动测试 试验/试验项目振动测试检验单号 产品名称/规格玻璃钢天线试验数量：5PCS 送检日期:2016-07-14完成日期：2016-07-15 试验/检验设备： 1CX-Z-100振动测试仪 2.网络分析仪 试验/检验条件： 将产品固定在振动台上，调整测试时间为0.5小时，在开启震动台，在调整震动台转数为 200+/-10转/分钟,振幅25.4mm+/-3% 试验结果 判定标准： 1、产品包装未变形，产品无外观影响。 2、电气测试符合标准：电压驻波比测试合格。 检验项目振动试验前振动试验前缺陷描述判定结果 外观 产品包装未变形，产品 无外观影响 产品包装未变形，产品 无外观影响 无合格 电性能 天线电压驻波比测试合 格 天线电压驻波比测试合 格 无合格 试验/检验判定：□合格□不合格□不作判定 测试：卓传伟审核：李先瑜核准：夏伟明