2ATXQWGSENSE25SENSE System Assembly

Sense2.5Usermanual Productname:SenseSystemAssembly Model:WGSENSE2.5 Powersupply:Ctypealkalinebattery*4pcs. Auxiliarycontrolequipment:Appleproducts@iOS Generaldescription: Senseproductisaswimmingmonitorandmaintainerforpoolwaterquality. Itcandetectthewaterqualitytimely,suchasPHvalue,chloridecontentand otherindicatorsandjudgewhetherthevaluesmeetsthestandard. Accordingtotheabovetestresults,theuserwillreleasechemicalstobalance thechemicalparametersofthewater,soastoimprovethewaterqualitytoa normallevel. Thedevicecanbecontrolledremotely,anditconnectstoAppleproductsvia WiFi. FCCwarning: Note:Thisequipmenthasbeentestedandfoundtocomplywiththelimitsfora ClassBdigitaldevice,pursuanttoPart15oftheFCCRules.Theselimitsare designedtoprovidereasonableprotectionagainstharmfulinterferenceina residentialinstallation.Thisequipmentgenerates,uses,andcanradiateradio frequencyenergy,andifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferencetoradiocommunications. However,thereisnoguaranteethatinterferencewillnotoccurinaparticular installation.Ifthisequipmentdoescauseharmfulinterferencetoradioor televisionreception,whichcanbedeterminedbyturningtheequipmentoff andon,theuserisencouragedtotrytocorrecttheinterferencebyoneor moreofthefollowingmeasures: Reorientorrelocatethereceivingantenna. Increasetheseparationbetweentheequipmentandreceiver. Connecttheequipmentintoanoutletonacircuitdifferentfromthatto whichthereceiverisconnected. Consultthedealeroranexperiencedradio/TVtechnicianforhelp Anychangesormodificationsnotexpresslyapprovedbythepartyresponsible forcompliancecouldvoidtheuser’sauthoritytooperatetheequipment. ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjectto thefollowingtwoconditions: (1)thisdevicemaynotcauseharmfulinterference,and (2)thisdevicemustacceptanyinterferencereceived,includinginterference thatmaycauseundesiredoperation. Sense2.5OperationDescription WorkingMechanism: 1.Thedevicemustbeusedwiththetestcassette. 2.Thecolorofthepadonthedetectioncassettewillchangewiththewater quality.TheopticaldevicesontheSensecansensetheabovecolor changesandcalculatethechemicalparametersoftheeffluent(PHvalue, chlorideioncontent,etc.)andjudgewhetherthevaluesmeetsthe standard. 3.Iftheaboveparametersarenotmettostandard,theuserwillrelease chemicalstobalancethechemicalparametersofthewater,soasto improvethewaterqualitytoanormallevel. 4.Thedevicecanbecontrolledremotely,anditconnectstoAppleproducts viaWiFi. Operationalprocessing: 1.Put4pcsCtypealkalinebatteriesintothebatterybox.Thedeviceis poweredon. 2.TurnonyourAppledeviceandconnectSenseprojectandAppleproducts viaWiFi. 3.ProductsaremonitoredremotelythroughWiFi,waterqualityisdetected andreported. 4.Iftheaboveresultisnotmetthestandard,theuserwillreleasechemicals tobalancethechemicalparametersofthewater,soastoimprovethewater qualitytoanormallevel. 5.Foradditionaldetails,pleasevisitourwebsiteforintroduction,orconsult ourtechnicalengineersforsupport.

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 WaterGuruInc FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-7 Ref:AttestationStatementsPart2.911(d)(S)(i)Filing FCCID:2ATXQWGSENSE25 ToWhomItMayConcern: WaterGuruIncthattheequipmentforwhichauthorizationissoughtisnot “covered”equipmentprohibitedfromreceivinganequipmentauthorization pursuanttosection2.903oftheFCCrules. Sincerely Signature: Contactname:DanielGnekow

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 WaterGuruInc FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-7 Ref:AttestationStatementsPart2.911(d)(S)(ii)Filing FCCID:2ATXQWGSENSE25 ToWhomItMayConcern: WaterGuruInccertifiesthat,asofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredListasanentityproducing"covered” equipment. Sincerely Signature: Contactname:DanielGnekow

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 WaterGuruInc FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-7 Ref:AttestationStatementsPart2.911(d)(7)Filing FCCID:2ATXQWGSENSE25 WaterGuruInccertifiesthat,asofthedateofthefilingoftheapplication,WaterGuruInc.isour designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. WaterGuruInc.acceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. WaterGuruIncaccepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: CompanyName:WaterGuruInc Address:230Commercialstsuite130,Sunnyvale,California,UnitedStates,94085 ContactPerson:DanielGnekow Tel.:5303553324 Email:[email protected] FRN:0028617207 SignedonbehalfofWaterGuruIncSignedonbehalfofWaterGuruInc Name:DanielGnekowName:DanielGnekow

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 WaterGuruInc FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-7 SUBJECT:FCCApplicationfor(FCCID:2ATXQWGSENSE25) ToWhomItMayConcern: We,theundersigned,herebyauthorizeYoyoZhouin ShenzhenHuaxiaTesting TechnologyCo.,Ltdat1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad, DalangStreet,LonghuaDistrict,Shenzhen,Chinaonourbehalf,toapplytotheFederal CommunicationsCommissiononourequipment.Anyandallactscarriedoutby ShenzhenHuaxiaTestingTechnologyCo.,Ltd onourbehalfshallhavethesame effectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We, theapplicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection 5301oftheAnti-DrugActof1988,21USC853a,andnopartytotheapplicationis subjecttoadenialoffederalbenefitspursuanttothatsection. Sincerely, (MustbesignedbythepersonthatislistedontheFCCWebsite) Signature: Contactname:DanielGnekow Companyname:WaterGuruInc Address:230Commercialstsuite130,Sunnyvale,California,UnitedStates,94085

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1.20 2.18 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. Model Number: WGSENSE2.5 FCC ID: 2ATXQWGSENSE25 Contains FCC ID: 2AC7Z-ESPC3MINI1

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ShenzhenHuaxiaTestingTechnologyCo.,Ltd. 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad,DalangStreet,LonghuaDistrict, Shenzhen,China Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V05 ReportTemplateRevisionDate:2021-11-03 RFExposureEvaluationReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlyto thesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20230100067E-02 Applicant:WaterGuruInc AddressofApplicant:230Commercialstsuite130,Sunnyvale,California,UnitedStates,94085 EquipmentUnderTest(EUT): EUTName:SENSESystemAssembly ModelNo.:WGSENSE2.5 TestModelNo.:WGSENSE2.5 BrandName:WaterGuru FCCID:2ATXQWGSENSE25 Standards: 47CFRPart1.1307 47CFRPart1.1310 447498D04InterimGeneralRFExposureGuidancev01 DateofReceipt:2023-01-11 DateofTest: 2023-01-11to2023-02-01 DateofIssue:2023-02-13 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-02 Page:2of7 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20230100067E-02Rev.01 Initialreport 2023-02-13 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-02 Page:3of7 2Contents Page 1VERSION............................................................................................................................................................................2 2CONTENTS........................................................................................................................................................................3 ..................................................................................................................................................................................................3 3GENERALINFORMATION..............................................................................................................................................4 3.1CLIENTINFORMATION...................................................................................................................................................4 3.2GENERALDESCRIPTIONOFEUT...................................................................................................................................4 3.3GENERALDESCRIPTIONOF2.4GWIFICLASSIC...........................................................................................................5 4MPEEVALUATION...........................................................................................................................................................6 4.1RFEXPOSURECOMPLIANCEREQUIREMENT.................................................................................................................6 4.1.1Limits....................................................................................................................................................................6 4.1.2TestProcedure...................................................................................................................................................6 4.1.3EUTRFExposure..............................................................................................................................................7 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-02 Page:4of7 3GeneralInformation 3.1ClientInformation Applicant:WaterGuruInc AddressofApplicant:230Commercialstsuite130,Sunnyvale,California,UnitedStates,94085 Manufacturer: HuNanGrand-proRobotTechnologyCo,Ltd AddressofManufacturer: Grand-ProIndustrialPark,suxianDistrict,Chenzhou,Hunan,China. Factory:HuNanGrand-proRobotTechnologyCo,Ltd AddressofFactory:Grand-ProIndustrialPark,suxianDistrict,Chenzhou,Hunan,China. 3.2GeneralDescriptionofEUT ProductName: SENSESystemAssembly ModelNo.: WGSENSE2.5 TestModelNo.: WGSENSE2.5 TradeMark: WaterGuru SoftwareVersion: V12.0.10-29-g71cfadc HardwareVersion: V12.3Sa EUTPowerSupply: Drycell:4*CDC6Vbattery ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-02 Page:5of7 3.3GeneralDescriptionof2.4GWIFIClassic OperationFrequency: 2412MHz~2462MHz TypeofModulation: IEEEfor802.11b:DSSS(CCK,DQPSK,DBPSK) IEEEfor802.11g:OFDM(64QAM,16QAM,QPSK,BPSK) IEEEfor802.11n(HT20andHT40):OFDM(64QAM,16QAM,QPSK,BPSK) NumberofChannel: IEEE802.11b/g,IEEE802.11nHT20:11Channels IEEE802.11nHT40:7Channels ChannelSeparation: 5MHz TransferRate: IEEEfor802.11b: 1Mbps/2Mbps/5.5Mbps/11Mbps IEEEfor802.11g: 6Mbps/9Mbps/12Mbps/18Mbps/24Mbps/36Mbps/48Mbps/54Mbps IEEEfor802.11n(HT20): 6.5Mbps/13Mbps/19.5Mbps/26Mbps/39Mbps/52Mbps/58.5Mbps/65Mbps IEEEfor802.11n(HT40): 13.5Mbps/27Mbps/40.5Mbps/54Mbps/81Mbps/108Mbps/121.5Mbps/135Mbps SampleType: MobilePortable AntennaType:PCBAntenna AntennaGain:2dBi Note： Theaboveparameterswilldirectlyaffectthetestresults.Theinformationisprovidedbytheapplicant. ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-02 Page:6of7 4MPEEvaluation 4.1RFExposureComplianceRequirement 4.1.1Limits ThetableappliestoanyRFsource(i.e.,singlefixed,mobile,andportabletransmitters)andspecifiespower anddistancecriteriaforeachofthefivefrequencyrangesusedfortheMPElimits.Thesecriteriaapplyat separationdistancesfromanypartoftheradiatingstructureofatleastλ/2π.Thethresholdsarebasedonthe generalpopulationMPElimitswithasingleperfectreflection,outsideofthereactivenear-field,andinthemain beamoftheradiator.FormobiledevicesthatarenotexemptperTableB.1[Table1of§1.1307(b)(1)(i)(C)]at distancesfrom20cmto40cmandin0.3GHzto6GHz,evaluationofcompliancewiththeexposurelimitsin §1.1310isnecessaryiftheERPofthedeviceisgreaterthanERP20cminFormula(B.1)[repeatedfrom§ 2.1091(c)(1)and§1.1307(b)(1)(i)(B)]. IftheERPisnoteasilyobtained,thentheavailablemaximumtime-averagedpowermaybeused(i.e.,without considerationofERPonlyifthephysicaldimensionsoftheradiatingstructure(s)donot…

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Theantennaconsistsofaboardandcoaxialwire.PartoftheRFsignalamplifierwasdesignedontheboard.Details areshowninthepicture. Name:Sense2.5Antenna,ModelName:2.4GANT,MFG:KAIMAUELECTRONIC Typicalelectricalspecifications: Type:1/4WavelengthMonopole Frequency:2.400GHzto2.475GHzGain:2dbiVSWR:<2:1 Polarization:Vertical,OmnidirectionalImpedance:50Ohms Size:10mmX40mmRoHS:Compliant Typicalradiationpatterns

ShenzhenHuaxiaTestingTechnologyCo.,Ltd. 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad,DalangStreet,LonghuaDistrict, Shenzhen,China Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V05 ReportTemplateRevisionDate:2021-11-03 TESTREPORT Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlyto thesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20230100067E-01 Applicant:WaterGuruInc AddressofApplicant:230Commercialstsuite130,Sunnyvale,California,UnitedStates,94085 EquipmentUnderTest(EUT): Product:SENSESystemAssembly ModelNo.:WGSENSE2.5 TestModelNo.:WGSENSE2.5 BrandName:WaterGuru FCCID:2ATXQWGSENSE25 Standards:47CFRPart15,SubpartC DateofReceipt:2023-01-11 DateofTest: 2023-01-11to2023-02-01 DateofIssue:2023-02-13 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove . TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-01 Page:2of26 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20230100067E-01Rev.01 Initialreport 2023-02-13 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-01 Page:3of26 2TestSummary TestItemTestRequirementTestmethodResult AntennaRequirement 47CFRPart15,SubpartCSection 15.203/15.247(c) ANSIC63.102013PASS ACPowerLine Conducted Emission 47CFRPart15,SubpartCSection 15.207 ANSIC63.102013N/A ConductedPeak& AverageOutputPower 47CFRPart15,SubpartCSection 15.247(b)(3) ANSIC63.102013N/A 6dBOccupied Bandwidth 47CFRPart15,SubpartCSection 15.247(a)(2) ANSIC63.102013N/A PowerSpectralDensity 47CFRPart15,SubpartCSection 15.247(e) ANSIC63.102013N/A Band-edgeforRF ConductedEmissions 47CFRPart15,SubpartCSection 15.247(d) ANSIC63.102013N/A RFConductedSpurious Emissions 47CFRPart15,SubpartCSection 15.247(d) ANSIC63.102013N/A RadiatedSpurious Emissions 47CFRPart15,SubpartCSection 15.205/15.209 ANSIC63.102013PASS Restrictedbandsaround fundamentalfrequency (RadiatedEmission) 47CFRPart15,SubpartCSection 15.205/15.209 ANSIC63.102013PASS ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-01 Page:4of26 3Contents Page 1VERSION......................................................................................................................................................................2 2TESTSUMMARY........................................................................................................................................................3 3CONTENTS..................................................................................................................................................................4 4GENERALINFORMATION.......................................................................................................................................5 4.1CLIENTINFORMATION.............................................................................................................................................5 4.2GENERALDESCRIPTIONOFEUT..........................................................................................................................5 4.3PRODUCTSPECIFICATIONSUBJECTIVETOTHISSTANDARD................................................................................5 4.4TESTENVIRONMENTANDMODE...........................................................................................................................7 4.5DESCRIPTIONOFSUPPORTUNITS........................................................................................................................8 4.6TESTLOCATION......................................................................................................................................................8 4.7TESTFACILITY........................................................................................................................................................8 4.8STATEMENTOFTHEMEASUREMENTUNCERTAINTY.............................................................................................9 4.9DEVIATIONFROMSTANDARDS..............................................................................................................................9 4.10ABNORMALITIESFROMSTANDARDCONDITIONS................................................................................................9 4.11OTHERINFORMATIONREQUESTEDBYTHECUSTOMER....................................................................................9 4.12EQUIPMENTLIST................................................................................................................................................10 5TESTRESULTSANDMEASUREMENTDATA..................................................................................................11 5.1ANTENNAREQUIREMENT.....................................................................................................................................11 5.2RADIATEDSPURIOUSEMISSIONS........................................................................................................................12 5.2.1Radiatedemissionbelow1GHz..............................................................................................................15 5.2.2Transmitteremissionabove1GHz..........................................................................................................17 5.3RESTRICTEDBANDSAROUNDFUNDAMENTALFREQUENCY................................................................................19 6PHOTOGRAPHS-EUTTESTSETUP..................................................................................................................25 7PHOTOGRAPHS-EUTCONSTRUCTIONALDETAILS...................................................................................26 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20230100067E-01 Page:5of26 4GeneralInformation 4.1ClientInformation Applicant:WaterGuruInc Addresso…

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1.1RadiatedSpuriousEmission 9kHz~30MHz: 30MHz~1GHz: Above1GHz:

1Photographs-EUTTestSetup 1.1RadiatedSpuriousEmission 9kHz~30MHz: 30MHz~1GHz: Above1GHz: