2AX5I-002remote

USER MANUAL Remote YZ2827-ECO Series 1 OPERATION Remote control operation FE118U1-33B-1FE118V1-33B-1 control panel FE118U1-33B-5FE118V1-33B-5 control panel FE118U1-43B-1FE118V1-43B-1 control panel FE118U1-43B-5FE118V1-43B-5 control panel OPERATION Remote control operation 2 Front wash / Stop Pairing Dry / / / Flush Rear wash After you are seated, press [Rear wash] key to start. After seating, press [Dry] key, initiate drying function. After you are seated, press [Front wash] key to start. Press [Stop] key to stop the wash, clean and dry function in progress. When cleaning, press [Massage] key to start mobile massage; press [Massage] key again to start strong and weak massage; press [Massagee] key for the third time to start strong& weak and mobile mixed massage; press [Massage] key for the fourth time to stop massageand cycle like this. Press [Flush] key to start flushing. / Massage Foam shield Foam duation setting Press [Foam Shield] key to start foam shield funtion Long press [Foam Shield] key for 3 seconds, the foam shield function when seated automatically will be turned on/off If not stopped manually the Rear Wash/Front Wash will stop automatically after 3 minutes. When usingthe drying function, it is recommended to wipe off larger water droplets with a paper towel first.Drying function will continue about 3 minutes. When replacing the remote control, it is necessary only after you replaced your remote control. Please make sure there is sucient power supply for the remote control before pairing. Short display one indicator light, medium display two indicator lights, long display three indicator lights. Long press the [Stop] key for more than 3s to exit the setting mode, or if no button is pressed within 20 seconds, it will automatically exit the setting mode. There are 3 gears in total, with the default being the long gear. Long press the [Stop] and [Foam Shield] keys for more than 3 seconds to enter the foam shield foaming duration setting mode and display the current setting status. Short press the foam shield key again, and switch to one mode every time you press it. There are three modes in total: short, medium and long. Cycle through this mode. Remove all batteries from the remote control, cut off the power to the toilet for more than 30 seconds, then turn on the power to the toilet. Wait for the toilet to emit three short beeps, and the night light on the toilet will flash, entering pairing mode. Immediately install the remote control battery, wait for the gear indicator light turn off, and continuously press the (stop) button until the toilet emits a feedback sound, indicating successful pairing. If the toilet emits two long beeps and the night light stops flashing, but the pairing is still unsuccessful, it needs to be re-paired. FunctionLogoOperationRemark OPERATION 3 Water temp Press the [Water Temp]key to set the current gear, then press the [Water Temp]key again, to increase the water temp, at the same time, the gear indicator light has correspondingly added. When the water temp reaches the highest gear, press the [Water Temp] key again, water temp closed ; All indicator lights are off, repeat this cycle. There are 3 gears in total, and the second gear is default after power on. Position Press the [>] or [<] key on the nozzle position to move the nozzle forward or backward, while the indicating light will adjust accordingly. There are 5 gears in total, and the fifth gear is default after power on. Remote control operation Seat temp Press the [Seat Temp]key to set the current gear, then press the [Seat Temp]key again, to increase the seat temp, at the same time, the gear indicator light has correspondingly added. When the seat temp reaches the highest gear, press the [Seat Temp] key again, seat temp closed; All indicator lights are off, repeat this cycle. Water flow + - Press the [+] or [-] key on the water volume to increase or decrease the flow rate, while the indicating light will adjust accordingly. There are 5 gears in total, and the third gear is default after power on. There are 3 gears in total, and the second gear is default after power on. Air temp There are 3 gears in total, and the second gear is default after power on. Press the [Air Temp]key to set the current gear, then press the [Air Temp] key again, to increase the air temp, at the same time, the gear indicator light has correspondingly added. When the air temp reaches the highest gear, press the [Air Temp] key again, air temp closed ; All indicator lights are off, repeat this cycle. FunctionLogoOperationRemark Manual cleaning During the operation of the cleaning function, if the person sits down or presses the [Stop]key, the nozzle will retract and manual cleaning will end. During the operation of the cleaning function, if the person sits down or presses the [Stop]key, the nozzle will retract and manual cleaning will end.(For FE118U1-43B-1 FE118V1-43B-1FE118U1-43B-5 FE118V1-43B-5 only) When not seated, press the [Descale] key to turn on the manual cleaning function, the nozzle extends and please clean the nozzle with a soft cloth. The nozzle will remain for 3 minutes, then retract and manual cleaning will end. When not seated, long press [<] key on the nozzle positionand [Stop] key for more than 3 seconds to turn on the manual cleaning function, the nozzle extends and please clean the nozzle with a soft cloth. The nozzle will remain for 3 minutes, then retract and manual cleaning will end. Eco mode Long press [Stop] and [Seat temp] key together for more than 3 seconds, initiate/close the Intelligent power saving function Sound on/off Long press [Stop] and [Water temp] key together for more than 3 seconds, initiate/close the prompt tone during using operationprompt tone. / / OPERATION 4 Temperature intelligent control Long press the [Stop]+ [Air Temp] keys for 3 seconds, temperature intelligent control on/off. Default closed. In this mode, the system will learn autonomously to intelligently adjust the seat…

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ECO(XIAMEN)TECHNOLOGY INC. Covered Equipment Certification Attestation Letter 9/23/2025 Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should ATTN.: Reviewing Engineer FCC ID: 2AX5I-002 ECO(XIAMEN)TECHNOLOGY INC.(“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. include an explanation on why the equipment is not “covered” equipment. ECO(XIAMEN)TECHNOLOGY INC. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Yonghua Cheng Title: Certification Engineer Company Name: ECO(XIAMEN)TECHNOLOGY INC. Date:9 /2 3 /202 5

Global Product Services & Consultation LLC SC5090021 U.S. Agent Designation for Service of Process - Certification Attestation Letter 11/27/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID:2AX5I-002 FRN of Grantee: 0030174999 Per section 2.911(d)(7) of the FCC rules, ECO(XIAMEN) TECHNOLOGY INC (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: Global Product Services and Consultation LLC FCC Registration Number (FRN): 0033406703 Physical U.S. Company Address: 328 W Palm Ave. Monrovia, CA91016, United States Contact Person: Michael Chan Agent Email Address: [email protected] Tel: (626) 366-4358 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Signed: Printed name: Yonghua Cheng Title: Certification Engineer Company: ECO(XIAMEN)TECHNOLOGY INC. Date: 11/27/2025 Agent Signed: Signed: Printed name: Michael Chan Title: Technical Director Company Name: Global Product Services and Consultation LLC Date: 11/27/2025

ECO ECO (XIAMEN) TECHNOLOGY INC. 厦门铱科卫浴科技有限公司 REQUEST FOR CONFIDENTIALITY - Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada 9/23/2025 K1V 1H2 FCC Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request confidential treatment of information accompanying this FCC ID: 2AX5I-002 application as outlined below: PERMANENT LONG-TERM CONFIDENTIALITY: Schematics Block Diagrams Theory of Operation When the device is marketed before the requested number of days listed above, the grantee will inform the TCB to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. The above information contains trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Sincerely, Signed: Printed name: Yonghua Cheng Title: Certification Engineer

FCC2025-0040-EUT-External 610000936803： FCC2025-0040-EUT-External FCC2025-0040-EUT-External FCC2025-0040-EUT-External 610000936703: 610000936701: 610000936801:

公差 TOLERANCE 1.0 标签 586174-* ±1mm 黑色印刷 ECO 厦门铱科卫浴科技有限公司 ECOXIAMENTECHNOLOGY INC. 消银龙不干胶(覆光膜) 边框为裁切线，无需印刷。 SIZE: 50*30MM 50 mm 30 mm FCC ID: 2AX5I-002 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.

FCC2025-0040-EUT-Internal FCC2025-0040-EUT-Internal Theinternalcircuitboardsof610000936703,610000936701,610000936803and 610000936801areconsistent.

TESTREPORT FCCID2AX5I-002 Applicant:ECO(Xiamen)TECHNOLOGYINC ProductName:remote ModelNo.:YZ2827-ECO CVCTestingTechnologyCo.,Ltd. TestReportNo.: FCC2025-0040-H TestReportNo.FCC2025-0040-HPage 2 of13 LTC-R-7094-RF-Part22-A0 ProductNameremoteTradeMarkWDI Type/ModelYZ2827-ECOSampleStatus— ApplicantECO(Xiamen)TECHNOLOGYINC ApplicantAddressNo.2,XiafeiEastRoad,HaicangDistrict,XiamenCity ManufacturerECO(Xiamen)TECHNOLOGYINC Manufacturer Address No.2,XiafeiEastRoad,HaicangDistrict,XiamenCity ProducerChangtaiYikeTechnologyCo.,LTD. ProducerAddress YingtangIndustrypark,GunongFarm,EconomicDevelopmentzone,Changtai County,ZhangzhouCity,China Quantityofsample1pcs Sample Identification 1-1 TestedAccording To FCCPart2(Section2.1093) KDB447498D04v01 IEEEC95.1 TestItemRFExposure ReceivingDate2025.7.14DateofTesting2025.7.15~2025.9.10 Testconclusion Theequipmentundertestwasfoundto comply withtherequirementsof thestandardsapplied. FinalVerdict ： Pass. SealofCVC Dateofissue:2025-09-19 Note1:ThistestreportrelatesonlytotheEUT,andshallnotbereproducedexceptinfull,withoutwrittenapprovalof CVC. Approvedby: ChenHuawen Reviewedby: XuZhenfei Testedby: LuWeiji TestReportNo.FCC2025-0040-HPage 3 of13 LTC-R-7094-RF-Part22-A0 TABLEOFCONTENTS 1.GENERALPRODUCTINFORMATION.............................................................................................................................4 1.1GENERALINFORMATION....................................................................................................................................................4 2.HUMANEXPOSUREASSESSMENT................................................................................................................................5 2.1RFEXPOSURETESTEXEMPTIONSFORSINGLESOURCE...........................................................................................................5 2.1.11-MWTESTEXEMPTION................................................................................................................................................5 2.1.2SAR-BASEDEXEMPTION.................................................................................................................................................5 2.1.3MPE-BASEDEXEMPTION...............................................................................................................................................6 2.1.4MPEEXPOSURELIMITS..................................................................................................................................................7 2.2RFEXPOSURETESTEXEMPTIONSFORSIMULTANEOUSTRANSMISSIONSOURCES.........................................................................9 2.2.11-MWTESTEXEMPTIONFORMULTIPLESOURCES..............................................................................................................9 2.2.2SIMULTANEOUSTRANSMISSIONWITHBOTHSAR-BASEDANDMPE-BASEDTESTEXEMPTIONS..................................................9 2.3CLASSIFICATION.........................................................................................................................................................10 3.RFOUTPUTPOWER...................................................................................................................................................11 4.TESTRESULTS.............................................................................................................................................................12 TestReportNo.FCC2025-0040-HPage 4 of13 LTC-R-7094-RF-Part22-A0 1.GeneralProductInformation 1.1Generalinformation ProductNameremote ModelNo.YZ2827-ECO Additionalmodel— PowerSupplyDC3V SerialNumber(SN) / AntennaTypePCBAntenna AntennaGain1dBi(providedbyclient) BeamforminggainUnsupported(providedbyclient) FrequencyRange2402~2480MHz OperateTemp.Range4°C-40°C Note： 1.TheinformationoftheEUTisdeclaredbythemanufacturer. 2.Thelaboratoryisnotresponsiblefortheproducttechnicalspecificationprovidedbytheclient. 3.Thisproducthasfourdifferentfunctionbuttons,correspondingtotheremotecontrolpart numbers:610000936703,610000936701,610000936803,610000936801.Thehardwareand communicationprotocoloftheremotecontrolPCBAarethesame,withonlydifferencesinthebutton UIandsoftwarefunctiondefinitions.Alltestswereconductedat610000936803,andthetestresults coveredothermodels. 4.Productphotoreferencereport:FCC2025-0040-EUT. TestReportNo.FCC2025-0040-HPage 5 of13 LTC-R-7094-RF-Part22-A0 2.HumanExposureAssessment 2.1RFExposureTestExemptionsforSingleSource 2.1.11-mWTestExemption The1mWTestExemptionof§1.1307(b)(3)(i)(A)appliesforsinglefixed,mobile,and portableRFsourceswithavailablemaximumtime-averagedpowerofnomorethan1mW, regardlessofseparationdistance. The1mWblanketexemptionappliesatseparationdistanceslessthan0.5cm,includingwhere thereisnoseparation.Thisexemptionshallnotbeusedinconjunctionwithotherexemption criteriaotherthanthoseformultipleRFsourcesinparagraph§1.1307(b)(3)(ii)(A). The1mWexemptionisindependentofservicetypeandcoversthefullrangeof100kHzto 100GHz,butitshallnotbeusedinconjunctionwithotherexemptioncriteriaorindeviceswith higher-powertransmittersoperatinginthesametime-averagingperiod.Exposurefromsuch higher-powertransmitterswouldinvalidatetheunderlyingassumptionthatexposurefromthe lower-powertransmitteristheonlycontributortoSARintherelevantvolumeoftissue. 2.1.2SAR-BasedExemption Amorecomprehensiveexemption,consideringavariablepowerthresholdthatdependsonboth theseparationdistanceandpower,isprovidedin§1.1307(b)(3)(i)(B).Thisexemptionis applicabletothefrequencyrangebetween300MHzand6GHz,withtestseparationdistances between0.5cmand40cm,andforallRFsourcesinfixed,mobile,andportabledeviceexposure conditions. Accordingly,aRFsourceisconsideredanRFexemptdeviceifitsavailablemaximumtime averaged(matchedconducted)poweroritseffectiveradiatedpower(ERP),whicheverisgreater, arebelowaspecifiedthreshold.Thisexemptionthresholdwasderivedbasedongeneral population1-gSARrequirements. Generalfrequencyandseparation-distancedependentMPE-basedeffectiveradiatedpow…

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AppendixA:DTSBandwidth TestResult TestModeAntennaChannel DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt1 24020.682401.692402.370.5PASS 24400.682439.702440.370.5PASS 24800.672479.702480.370.5PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaChannel OCB[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt1 24021.0672401.48452402.5514------ 24401.0752439.48052440.5554------ 24801.0792479.48052480.5594------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaChannelResult[dBm/3kHz]Limit[dBm/3kHz]Verdict BLE_1MAnt1 2402-20.06≤8.00PASS 2440-21.64≤8.00PASS 2480-21.92≤8.00PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixE:Bandedgemeasurements TestResult TestModeAntennaChNameChannelRefLevel[dBm]Result[dBm]Limit[dBm]Verdict BLE_1MAnt1 Low2402-8.24-44.14≤-28.24PASS High2480-8.93-44.17≤-28.93PASS TestGraphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 AppendixF:ConductedSpuriousEmission TestResult TestModeAntennaChannel FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict BLE_1MAnt1 2402 Reference-8.23-8.23---PASS 30~1000-8.23-58.88≤-28.23PASS 1000~26500-8.23-48.56≤-28.23PASS 2440 Reference-9.76-9.76---PASS 30~1000-9.76-57.65≤-29.76PASS 1000~26500-9.76-48.58≤-29.76PASS 2480 Reference-9.16-9.16---PASS 30~1000-9.16-57.88≤-29.16PASS 1000~26500-9.16-47.89≤-29.16PASS TestGraphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 BLE_1M_Ant1_2480_1000~26500 AppendixG:DutyCycle TestResult TestModeAntennaChannel ONTime [ms] Period [ms] XDC [%] xFactor LimitVerdict BLE_1MAnt1 24020.430.630.682568.251.66------ 24400.430.630.682568.251.66------ 24800.430.630.682568.251.66------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480

TESTREPORT FCCID2AX5I-002 Applicant:ECO(Xiamen)TECHNOLOGYINC ProductName:remote ModelNo.:YZ2827-ECO CVCTestingTechnologyCo.,Ltd. TestReportNo.: FCC2025-0040-RF TestReportNo.FCC2025-0040-RFPage 2 of 33 LTC-R-7092-RF-Part15C-A1 Applicant Name:ECO(Xiamen)TECHNOLOGYINC Address:No.2,XiafeiEastRoad,HaicangDistrict,XiamenCity Manufacturer Name:ECO(Xiamen)TECHNOLOGYINC Address:No.2,XiafeiEastRoad,HaicangDistrict,XiamenCity Producer Name:ChangtaiYikeTechnologyCo.,LTD. Address:YingtangIndustrypark,GunongFarm,Economic Developmentzone,ChangtaiCounty,ZhangzhouCity,China EquipmentUnderTest ProductName:remote ModelNo.:YZ2827-ECO Trademark:WDI Serialno.:— Sampling:1-1 DateofReceipt.2025.7.14DateofTesting2025.7.15~2025.9.10 TestSpecificationTestResult FCCCFR47Part15CRadioFrequencyDevices ANSIC63.10-2020/Cor1-2023 KDB558074D0115.247MeasGuidancev05r02 PASS EvaluationofTestResult Theequipmentundertestwasfoundto comply withthe requirementsofthestandardsapplied. SealofCVC Dateofissue:2025-09-19 Approvedby: ChenHuawen Reviewedby: XuZhenfei Testedby: LuWeiji OtherAspects:NONE. Abbreviations:Pass=passedFail=failedN/A=notapplicableEUT=equipment,sample(s)undertested Note1:ThistestreportrelatesonlytotheEUT,andshallnotbereproducedexceptinfull,withoutwrittenapprovalofCVC. TestReportNo.FCC2025-0040-RFPage 3 of 33 LTC-R-7092-RF-Part15C-A1 TABLEOFCONTENTS 1.GENERALPRODUCTINFORMATION.................................................................................................................4 1.1GENERALINFORMATION .............................................................................................................................................4 2.TESTSITES..............................................................................................................................................................5 2.1TESTFACILITIES .........................................................................................................................................................5 2.2DESCRIPTIONOFNON-STANDARDMETHODANDDEVIATIONS ................................................................................5 2.3LISTOFTESTANDMEASUREMENTINSTRUMENTS...................................................................................................5 3.TESTCONFIGURATION .........................................................................................................................................6 3.1TESTMODE ................................................................................................................................................................6 3.2DUTYCYCLE ...............................................................................................................................................................7 4.SUMMARYOFMEASUREMENTRESULTS........................................................................................................8 5.MEASUREMENTPROCEDURE...........................................................................................................................9 5.1RADIATEDEMISSION ..................................................................................................................................................9 5.2MAXIMUMCONDUCTEDOUTPUTPOWER.................................................................................................................20 5.3MINIMUM6DBBANDWIDTH.....................................................................................................................................22 5.4OCCUPIEDCHANNELBANDWIDTH ...........................................................................................................................24 5.5BANDEDGEMEASUREMENT ....................................................................................................................................26 5.6MAXIMUMPOWERSPECTRALDENSITY..................................................................................................................28 5.7SPURIOUSRFCONDUCTEDEMISSIONS.................................................................................................................30 6.APPENDIXX ...........................................................................................................................................................32 TestReportNo.FCC2025-0040-RFPage 4 of 33 LTC-R-7092-RF-Part15C-A1 1.GeneralProductInformation 1.1Generalinformation ProductNameremote ModelNo.YZ2827-ECO Additionalmodel — PowerSupplyDC3V SerialNumber(SN)/ HW-ReleaseNO/ SW-ReleaseNO/ specificpowersettings-7 AntennaTypePCBAntenna AntennaGain1dBi(providedbyclient) BeamforminggainUnsupported(providedbyclient) FrequencyRange2402~2480MHz ChannelNumber40Channels TypeofModulationGFSK OperateTemp.Range4°C-40°C Note： 1.TheinformationoftheEUTisdeclaredbythemanufacturer. 2.Thelaboratoryisnotresponsiblefortheproducttechnicalspecificationprovidedbytheclient. 3.Thisproducthasfourdifferentfunctionbuttons,correspondingtotheremotecontrolpart numbers:610000936703,610000936701,610000936803,610000936801.Thehardwareand communicationprotocoloftheremotecontrolPCBAarethesame,withonlydifferencesinthebutton UIandsoftwarefunctiondefinitions.Alltestswereconductedat610000936803,andthetestresults coveredothermodels. 4.Productphotoreferencereport:FCC2025-0040-EUT. TestReportNo.FCC2025-0040-RFPage 5 of 33 LTC-R-7092-RF-Part15C-A1 2.TestSites 2.1TestFacilities ThetestsandmeasurementsrefertothisreportwereperformedbyRFtestingLab.ofCVCTesting TechnologyCo.,Ltd. Add.:No.3,TiantaiyiRoad,KaitaiAvenue,ScienceCity,Guangzhou,Guangdong,510663,People's RepublicofChina Telephone:+86-20-32293888 Fax:+86-20-32293889 FCC(Testfirmdesignationnumber：CN1282) IC(TestfirmCABidentifiernumber：CN0103) 2.2DescriptionofNon-standardMethodandDeviations Thetestingandmeasurementmethodsusedinthisreportareappliedbyallstandardmethods.Notany non-standardmethodordeviationfromtheusedstandardswasused. 2.3ListofTestandMeasurementInstruments RefertoAppendixX. TestReportNo.FCC2025-0040-RFPage…

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TestReportNo.:FCC2025-0040 1.PhotographsOfTestSetup ConductedEmissionTestSetup RadiatedTestSetup TestReportNo.:FCC2025-0040 RadiatedTestSetup RadiatedTestSetup TestReportNo.:FCC2025-0040 RadiatedTestSetup