2BUKG-V3-45PROPermanent Magnet Variable Speed Booster Pump

GuangzhouGuangxiTechnologyCo.,Ltd. RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:May.13,26 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BUKG-V3-45PRO GuangzhouGuangxiTechnologyCo.,Ltd.(“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002of referencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:YuXuFu Title:Manager Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China Tel.:+8613790932214 Email:[email protected]

GuangzhouGuangxiTechnologyCo.,Ltd. Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:May.13,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:[2BUKG-V3-45PRO] ProductName:[PermanentMagnetVariableSpeedBoosterPump] Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. 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, ApplicantSignature PrintedName:YuXuFu Title:Manager Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China Tel.:+8613790932214 Email:[email protected] GuangzhouGuangxiTechnologyCo.,Ltd. Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China 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

GuangzhouGuangxiTechnologyCo.,Ltd. Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China (May.13,26) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BUKG-V3-45PRO 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 Sincerely, (Signature) Title:Manager Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China Tel.:+8613790932214 Email:[email protected]

GuangzhouGuangxiTechnologyCo.,Ltd. Address:RoomC0440,8thFloor,No.88,TangjingRoad,BaiyunDistrict,Guangzhou,China (May.13,26) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BUKG-V3-45PRO I,theundersigned,herebyauthorize(ShenzhenNTTTestingTechnologyCo.,Ltd.)toactonourbehalfin allmattersrelatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenNTTTestingTechnologyCo.,Ltd.)shallhavethesameeffectasour ownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification, asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(GuangzhouGuangxi TechnologyCo.,Ltd.). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) YuXuFu (FullnameofcontactpersonlistedonFCC’swebsite) (Title):Manager Tel:+8613790932214 Fax:+8613790932214 Email:[email protected]

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FCCID:2BUKG-V3-45PRO RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1091，Unlessspecifically requiredbythepublishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremity SARevaluationforgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,isnot requiredwhenthecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. TestResultofRFExposureEvaluation 1.BTandwificantransmitatthesametime 2.InthecaseofsimultaneouslaunchesforwifiandBT: TheMaxCalc.Thresholds:BT:0.000393,WiFi:0.012437 BTandWifi:0.000393+0.015658=0.016051≤1 SoaSARtestisnotrequired Modulation Frequenc y MHz Output power to antenna (dBm) Target power W/toler ance (dBm） Max Output powerto antenna (dBm) Max Output powerto antenna (mW) Power Densityat R=20cm (mW/cm2) Limit (mW/c m2) Result BT（BLE） GFSK 2402 -2.07 -2±1-10.7940.0003931.0PASS 2440 -2.21 -2±1 -10.7940.0003931.0PASS 2480 -2.31 -2±1-10.7940.0003931.0PASS Modulation Frequenc y MHz Output power to antenna (dBm) Target power W/toler ance (dBm） Max Output powerto antenna (dBm) Max Output powerto antenna (mW) Power Densityat R=20cm (mW/cm2) Limit (mW/c m2) Result WIFI2.4G 802.11b 2412 14.16 14±11531.6220.0156581.0PASS 2437 11.86 12±1 1319.9520.0098791.0PASS 2462 14.12 14±11531.6220.0156581.0PASS 802.11g 2412 13.11 13±11425.1180.0124371.0PASS 2437 11.15 11±1 1215.8480.0078471.0PASS 2462 13.12 13±11425.1180.0124371.0PASS 802.11n (HT20) 2412 13.21 13±1 1425.1180.0124371.0PASS 2437 11.29 11±11215.8480.0078471.0PASS 2462 13.09 13±11425.1180.0124371.0PASS

OTA TEST REPORT TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in ANSI/IEEE Std 149-2008. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. Prepared by: Peng Tao Approved by: Kai Xu TA Technology (Shanghai) Co., Ltd. No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China TEL: +86‐021‐50791141/2/3 FAX: +86‐021‐50791141/2/3‐8000 Applicant Espressif System (Shanghai) Co.,Ltd Product ESP32-C3-MINI-1 Model ESP-ANT D-H Report No. Y2102A0260-T2 Issue Date March 9, 2021 OTA Test Report Report No: Y2102A0260-T2 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 2 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. TABLE OF CONTENTS 1. Test Laboratory .............................................................................................................................. 3 1.1. Notes of the Test Report ................................................................................................... 3 1.2. Test facility ........................................................................................................................ 3 1.3. Testing Location ................................................................................................................ 3 1.4. Laboratory Environment .................................................................................................... 4 2. General Description of Equipment under Test ............................................................................... 5 2.1. Applicant and Manufacturer Information ............................................................................ 5 2.2. General information ........................................................................................................... 5 2.3. Test Date ........................................................................................................................... 5 2.4. Receiving Date .................................................................................................................. 5 2.5. Applied Standards ............................................................................................................. 6 3. Test Conditions .............................................................................................................................. 7 3.1. Test Configuration ............................................................................................................. 7 3.2. Test Measurement ............................................................................................................. 7 4. Test Results ................................................................................................................................... 8 4.1. Gain and Efficiency ............................................................................................................ 8 5. Equipment List ............................................................................................................................... 9 ANNEX A 3-D Pattern Plots ................................................................................................................... 10 ANNEX B：The EUT Appearance and Test Configuration ...................................................................... 12 B.1 EUT Appearance ................................................................................................................... 12 B.2 Test Configuration ................................................................................................................. 13 OTA Test Report Report No: Y2102A0260-T2 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 3 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 1. Test Laboratory 1.1. Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of TA technology (shanghai) co., Ltd. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein .Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. 1.2. Test facility A2LA (Certificate Number: 3857.01) TA Technology (Shanghai) Co., Ltd. has been listed by American Association for Laboratory Accreditation to perform measurement. 1.3. Testing Location Company: TA Technology (Shanghai) Co., Ltd. Address: No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai, China City: Shanghai Post code: 201201 Country: P. R. China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: http://www.ta-shanghai.com E-mail: [email protected] OTA Test Report Report No: Y2102A0260-T2 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 4 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 1.4. Laboratory Environment Temperature Min. =19°C，Max. = 25°C Relative humidity Min. =40%，Max. =72% Shield effect 0.7-6GHz > 100dB Ground resistance <0.5 OTA Test Report Report No: Y2102A0260-T2 TA Technology (Shanghai) Co., Ltd. TA-MB-04-008O P age 5 of 13 This report shall not be reproduced except in full, without the written approval of TA Technology (Shanghai) Co., Ltd. 2. General Description of Equipment under Test 2.1. Applicant and Manufacturer Information Applicant Name Espressif System (Shanghai) Co.,Ltd Applicant address Suite 204 Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China Manufacturer Name Espressif System (Shanghai) Co.,Ltd Manufacturer address Suite 204 Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China 2.2. …

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ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page1of23 FCCID:2BUKG-V3-45PRO RFTestData DutyCycle....................................................................................................................................................................2 MaximumPeakConductedOutputPower....................................................................................................................5 -6dBBandwidth............................................................................................................................................................8 OccupiedChannelBandwidth.....................................................................................................................................11 MaximumPowerSpectralDensityLevel.....................................................................................................................14 BandEdge..................................................................................................................................................................17 ConductedRFSpuriousEmission..............................................................................................................................20 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page2of23 DutyCycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNTBLE1M2402Ant162.482.042.56 NVNTBLE1M2440Ant162.482.042.56 NVNTBLE1M2480Ant162.482.042.56 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page3of23 DutyCycleNVNTBLE1M2402MHzAnt1 DutyCycleNVNTBLE1M2440MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page4of23 DutyCycleNVNTBLE1M2480MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page5of23 MaximumPeakConductedOutputPower Conditio n Mod e Frequenc y(MHz) Antenn a Conducte dPower (dBm) Total Conducte dPower (dBm) Total Conducte dPower (W) Limit Conducted(dB m) Verdic t NVNTBLE 1M 2402Ant1-2.07-2.070.0006230Pass NVNTBLE 1M 2440Ant1-2.21-2.210.000630Pass NVNTBLE 1M 2480Ant1-2.31-2.310.0005930Pass ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page6of23 PeakPowerNVNTBLE1M2402MHzAnt1 PeakPowerNVNTBLE1M2440MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page7of23 PeakPowerNVNTBLE1M2480MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page8of23 -6dBBandwidth ConditionModeFrequency (MHz) Antenna-6dBBandwidth (MHz) Limit-6dBBandwidth (MHz) Verdict NVNTBLE 1M 2402Ant10.65210.5Pass NVNTBLE 1M 2440Ant10.67270.5Pass NVNTBLE 1M 2480Ant10.66840.5Pass ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page9of23 -6dBBandwidthNVNTBLE1M2402MHzAnt1 -6dBBandwidthNVNTBLE1M2440MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page10of23 -6dBBandwidthNVNTBLE1M2480MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page11of23 OccupiedChannelBandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTBLE1M2402Ant11.0523 NVNTBLE1M2440Ant11.0539 NVNTBLE1M2480Ant11.045 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page12of23 OBWNVNTBLE1M2402MHzAnt1 OBWNVNTBLE1M2440MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page13of23 OBWNVNTBLE1M2480MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page14of23 MaximumPowerSpectralDensityLevel ConditionModeFrequency (MHz) AntennaConducted PSD (dBm/3kHz) Duty Factor (dB) TotalPSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNTBLE 1M 2402Ant1-16.850-16.858Pass NVNTBLE 1M 2440Ant1-170-178Pass NVNTBLE 1M 2480Ant1-17.070-17.078Pass ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page15of23 PSDNVNTBLE1M2402MHzAnt1 PSDNVNTBLE1M2440MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page16of23 PSDNVNTBLE1M2480MHzAnt1 ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page17of23 BandEdge ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTBLE1M2402Ant1-40.62-20Pass NVNTBLE1M2480Ant1-50.3-20Pass ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page18of23 BandEdgeNVNTBLE1M2402MHzAnt1Ref BandEdgeNVNTBLE1M2402MHzAnt1Emission ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page19of23 BandEdgeNVNTBLE1M2480MHzAnt1Ref BandEdgeNVNTBLE1M2480MHzAnt1Emission ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page20of23 ConductedRFSpuriousEmission ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTBLE1M2402Ant1-52.86-20Pass NVNTBLE1M2440Ant1-52.32-20Pass NVNTBLE1M2480Ant1-53.01-20Pass ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page21of23 Tx.SpuriousNVNTBLE1M2402MHzAnt1Ref Tx.SpuriousNVNTBLE1M2402MHzAnt1Emission ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page22of23 Tx.SpuriousNVNTBLE1M2440MHzAnt1Ref Tx.SpuriousNVNTBLE1M2440MHzAnt1Emission ReportNo.:SZNTT26015330E1-1 SZNTT-TR728-0Page23of23 Tx.SpuriousNVNTBLE1M2480MHzAnt1Ref Tx.SpuriousNVNTBLE1M2480MHzAnt1Emission