2BQIW-PM290Portable Mini Printer

Zhongshan Polono Electronic Technology Co., Ltd. Covered Equipment Certification Attestation Letter 9/4/2025 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2BQIW-PM290 Zhongshan Polono Electronic Technology Co., Ltd. (“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. 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 include an explanation on why the equipment is not “covered” equipment. Zhongshan Polono Electronic Technology Co., Ltd. (“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. Zhongshan Polono Electronic Technology Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Jiarong Xu Title: Manager Company Name: Zhongshan Polono Electronic Technology Co., Ltd. Date: 9/4/2025

Global Product Services & Consultation LLC SC5084475 U.S. Agent Designation for Service of Process - Certification Attestation Letter 7/8/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BQIW-PM290 FRN of Grantee: 0037200524 Per section 2.911(d)(7) of the FCC rules, Zhongshan Polono Electronic Technology Co., Ltd. (“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: Agent Signed Signed: Printed name: Jiarong Xu Title: Manager Company Name: Zhongshan Polono Electronic Technology Co., Ltd. Date: 9/4/2025 Signed: Printed name: Michael Chan Title: Technical Director Company Name: Global Product Services and Consultation LLC Date: 9/8/2025

Zhongshan Polono Electronic Technology Co., Ltd. September 5, 2025 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: 2BQIW-PM290 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing 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. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of 180 days. We attest marketing of the product will only commence after the period of short-term confidentiality the requested number of days listed above, the expires, or if marketing is to commence before grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note:any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Jiarong Xu Title: Manager Company Name: Zhongshan Polono Electronic Technology Co., Ltd.

TESTREPORT FCCID:2BQIW-PM290 Applicant:ZhongshanPolonoElectronicTechnologyCo.,Ltd. ProductName:PortableMiniPrinter ModelNo.:PM290 CVCTestingTechnologyCo.,Ltd. TestReportNo.: FCC2025-0027-H TestReportNo.FCC2025-0027-HPage 2 of 14 LTC-R-7093-RF-Part15E-A0 ProductNamePortableMiniPrinterTradeMark--- Type/ModelPM290SampleStatus--- ApplicantZhongshanPolonoElectronicTechnologyCo.,Ltd. ApplicantAddress No.132,TanlongNorthRoad,TanzhouTown,ZhongshanCity,4thand5thfloors, Building2,4thand5thfloors,Building3 ManufacturerZhongshanPolonoElectronicTechnologyCo.,Ltd. ManufacturerAddress No.132,TanlongNorthRoad,TanzhouTown,ZhongshanCity,4thand5thfloors, Building2,4thand5thfloors,Building3 FactoryZhongshanPolonoElectronicTechnologyCo.,Ltd. FactoryAddress No.132,TanlongNorthRoad,TanzhouTown,ZhongshanCity,4thand5thfloors, Building2,4thand5thfloors,Building3 SampleIdentification1-1TestItem RFExposure TestedAccordingTo FCCPart2(Section2.1093) KDB447498D04InterimGeneralRFExposureGuidancev01 IEEEC95.1-2019 ReceivingDateJun.24,2025CompletingDateJul.16,2025~Aug.15,2025 Testconclusion Theequipmentundertestwasfoundtocomplywiththerequirementsofthe standardsapplied. FinalVerdict：Pass. SealofCVC Dateofissue:Sep.05,2025 Abbreviations:/Pass=passedFail=failedN/A=notapplicable ThistestreportrelatesonlytotheEUT,andshallnotbereproducedexceptinfull,withoutwrittenapprovalofCVC. Approvedby: ChenHuawen Reviewedby: XuZhenfei Testedby: LiYueao TestReportNo.FCC2025-0027-HPage 3 of 14 LTC-R-7093-RF-Part15E-A0 TABLEOFCONTENTS RELEASECONTROLRECORD............................................................................................................................................4 1.GENERALPRODUCTINFORMATION.............................................................................................................................5 1.1GENERALINFORMATION....................................................................................................................................................5 2.HUMANEXPOSUREASSESSMENT................................................................................................................................6 2.1RFEXPOSURETESTEXEMPTIONSFORSINGLESOURCE...........................................................................................................6 2.1.11-MWTESTEXEMPTION................................................................................................................................................6 2.1.2SAR-BASEDEXEMPTION.................................................................................................................................................6 2.1.3MPE-BASEDEXEMPTION...............................................................................................................................................7 2.1.4MPEEXPOSURELIMITS..................................................................................................................................................8 2.2RFEXPOSURETESTEXEMPTIONSFORSIMULTANEOUSTRANSMISSIONSOURCES.......................................................................10 2.2.11-MWTESTEXEMPTIONFORMULTIPLESOURCES............................................................................................................10 2.2.2SIMULTANEOUSTRANSMISSIONWITHBOTHSAR-BASEDANDMPE-BASEDTESTEXEMPTIONS................................................10 2.3CLASSIFICATION.........................................................................................................................................................11 3.RFOUTPUTPOWER...................................................................................................................................................12 4.TESTRESULTS.............................................................................................................................................................13 TestReportNo.FCC2025-0027-HPage 4 of 14 LTC-R-7093-RF-Part15E-A0 RELEASECONTROLRECORD ISSUENO.REASONFORCHANGEDATEISSUED FCC2025-0027-HOriginalreleaseSep.05,2025 TestReportNo.FCC2025-0027-HPage 5 of 14 LTC-R-7093-RF-Part15E-A0 1.GeneralProductInformation 1.1Generalinformation ProductNamePortableMiniPrinter ModelNo.PM290 AdditionalmodelN/A PowerSupplyDC3.7V Softwareversion 0.1.0 Hardwareversion PM290AC6951B-0.0.2 TypeofModulationGFSK,π/4DQPSK,8DPSK AntennaTypePIFAantenna AntennaGainBluetooth:2.499dBi(providedbyclient) BeamforminggainUnsupported(providedbyclient) FrequencyRange Bluetooth:2402~2480MHz ChannelNumber Bluetooth(LE_1M):40Channels Bluetooth(EDR):79Channels OperateTemp.Range +5°C~+45°C Note： 1.TheinformationoftheEUTisdeclaredbythemanufacturer. 2.Thelaboratoryisnotresponsiblefortheproducttechnicalspecificationprovidedbytheclient. 3.Theproductmodelsofthisapplicationare:PM290,whichhasfourdifferentcolors,namelypink, purple,whiteandgreen.TheysharethesamePCBboard,schematicdiagram,PCBlayout,electrical structure,electricalprincipleandkeycomponents.Theonlydifferenceistheappearancecolor.Allthe testscarriedoutonmodelPM290. 4.EUTphotorefertoreport(ReportNO.:FCC2025-0027-EUT). 5.TheEUThaveSISOfunction,provides1completedtransmitterand1receiver. TestReportNo.FCC2025-0027-HPage 6 of 14 LTC-R-7093-RF-Part15E-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-powertransmitterswouldinvalidatetheunder…

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2.4G-2.48G Test Report on Built-in PIFA Antenna for Frequency Range Board SPECIFICATIONS Frequency（MHz） 2400-2480 Peak Gain（dBi） 2.499 Average Gain（dBi） ＞-4 VSWR ＜3.2 Impedance（Ω） 50Ω Antenna Type Plannar Inverted F Antenna on board Polarization Linear Test Environment: ZK Guojitu Dark Room Test System Z X Y Antenna physical object and physical dimensions Passive S-parameters of the antenna： VSWR、Return Loss and Smith's circle diagram Antenna efficiency and gain Frequency（MHz） Gain（dBi） Effciency（%） AverageGain（dBi） Efficiency（dB） 2400 1.433 59.329% -2.717 -2.267 2410 0.927 51.861% -3.416 -2.852 2420 0.829 52.112% -3.166 -2.831 2430 0.881 49.299% -3.258 -3.072 2440 1.192 50.672% -3.144 -2.952 2450 1.688 53.067% -2.735 -2.752 2460 2.194 59.423% -2.276 -2.260 2470 2.118 56.680% -2.438 -2.466 2480 2.499 61.727% -2.112 -2.095 Average 1.529 54.908% -2.806 -2.616 Peak 2.499 61.727% -2.112 -2.095 2440MHz 2D-Theta Pattern 2440MHz 2D-Phi Pattern 2440MHz 3D-Horizontal Pattern 2440MHz 3D-Vertical Pattern 2440MHz 3D-Total Pattern

TESTREPORT FCCID:2BQIW-PM290 Applicant:ZhongshanPolonoElectronicTechnologyCo.,Ltd. ProductName:PortableMiniPrinter ModelNo.:PM290 CVCTestingTechnologyCo.,Ltd. TestReportNo.: FCC2025-0027-RF1 TestReportNo.FCC2025-0027-RF1Page2of32 LTC-R-7092-RF-Part15C-A1 ProductNamePortableMiniPrinterTradeMark--- Type/ModelPM290SampleStatus--- ApplicantZhongshanPolonoElectronicTechnologyCo.,Ltd. ApplicantAddress No.132,TanlongNorthRoad,TanzhouTown,ZhongshanCity,4thand5thfloors, Building2,4thand5thfloors,Building3 ManufacturerZhongshanPolonoElectronicTechnologyCo.,Ltd. ManufacturerAddress No.132,TanlongNorthRoad,TanzhouTown,ZhongshanCity,4thand5thfloors, Building2,4thand5thfloors,Building3 FactoryZhongshanPolonoElectronicTechnologyCo.,Ltd. FactoryAddress No.132,TanlongNorthRoad,TanzhouTown,ZhongshanCity,4thand5thfloors, Building2,4thand5thfloors,Building3 SampleIdentification1-1TestItemSeepage07 TestedAccordingTo FCCCFR47Part15CRadioFrequencyDevices ANSIC63.10-2020+Cor1-2023 KDB558074D0115.247MeasGuidancev05r02 ReceivingDateJun.24,2025CompletingDateJul.16,2025~Aug.15,2025 Testconclusion Theequipmentundertestwasfoundtocomplywiththerequirementsofthe standardsapplied. FinalVerdict：Pass. SealofCVC Dateofissue:Sep.05,2025 Abbreviations:/Pass=passedFail=failedN/A=notapplicable ThistestreportrelatesonlytotheEUT,andshallnotbereproducedexceptinfull,withoutwrittenapprovalofCVC. Approvedby: ChenHuawen Reviewedby: XuZhenfei Testedby: LiYueao TestReportNo.FCC2025-0027-RF1Page3of32 LTC-R-7092-RF-Part15C-A1 TABLEOFCONTENTS RELEASECONTROLRECORD............................................................................................................................................4 1.GENERALPRODUCTINFORMATION .................................................................................................................5 1.1GENERALINFORMATION.............................................................................................................................................5 2.TESTSITES ..............................................................................................................................................................6 2.1TESTFACILITIES .........................................................................................................................................................6 2.2DESCRIPTIONOFNON-STANDARDMETHODANDDEVIATIONS................................................................................6 2.3LISTOFTESTANDMEASUREMENTINSTRUMENTS ...................................................................................................6 3.TESTCONFIGURATION .........................................................................................................................................7 3.1TESTMODE ................................................................................................................................................................7 3.2DUTYCYCLE...............................................................................................................................................................8 4.SUMMARYOFMEASUREMENTRESULTS........................................................................................................9 5.MEASUREMENTPROCEDURE .........................................................................................................................10 5.1CONDUCTEDEMISSION............................................................................................................................................10 5.2RADIATEDEMISSION................................................................................................................................................14 5.3MAXIMUMCONDUCTEDOUTPUTPOWER .................................................................................................................25 5.4MINIMUM6DBBANDWIDTH .....................................................................................................................................26 5.5OCCUPIEDCHANNELBANDWIDTH...........................................................................................................................27 5.6BANDEDGEMEASUREMENT....................................................................................................................................28 5.7MAXIMUMPOWERSPECTRALDENSITY ..................................................................................................................29 5.8SPURIOUSRFCONDUCTEDEMISSIONS.................................................................................................................30 6.APPENDIXX...........................................................................................................................................................31 TestReportNo.FCC2025-0027-RF1Page4of32 LTC-R-7092-RF-Part15C-A1 RELEASECONTROLRECORD ISSUENO.REASONFORCHANGEDATEISSUED FCC2025-0027-RF1OriginalreleaseSep.05,2025 TestReportNo.FCC2025-0027-RF1Page5of32 LTC-R-7092-RF-Part15C-A1 1.GeneralProductInformation 1.1Generalinformation ProductNamePortableMiniPrinter ModelNo.PM290 AdditionalmodelN/A PowerSupplyDC3.7V Softwareversion0.1.0 HardwareversionPM290AC6951B-0.0.2 specificpowersettingsBluetooth(LE_1M):10 AntennaTypePIFAantenna AntennaGainBluetooth:2.499dBi(providedbyclient) BeamforminggainUnsupported(providedbyclient) FrequencyRangeBluetooth(LE_1M):2402~2480MHz ChannelNumberBluetooth(LE_1M):40Channels TypeofModulationGFSKforBT-LE Max.ConductedPowerBluetooth(LE):-1.09dBm OperateTemp.Range+5°C~+45°C Note： 1.TheinformationoftheEUTisdeclaredbythemanufacturer. 2.Thelaboratoryisnotresponsiblefortheproducttechnicalspecificationprovidedbytheclient. 3.Theproductmodelsofthisapplicationare:PM290,whichhasfourdifferentcolors,namelypink, purple,whiteandgreen.TheysharethesamePCBboard,schematicdiagram,PCBlayout,electrical structure,electricalprincipleandkeycomponents.Theonlydifferenceistheappearancecolor.Allthe testscarriedoutonmodelPM290. 4.EUTphotorefert…

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AppendixA:DTSBandwidth TestResult TestModeAntennaChannel DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt1 24020.662401.642402.300.5PASS 24400.652439.642440.290.5PASS 24800.662479.642480.300.5PASS 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 24021.0272401.46452402.4915------ 24401.0272439.46452440.4915------ 24801.0312479.46052480.4915------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeAntennaChannel ConductedPeak Powert[dBm] Conducted Limit[dBm] Verdict BLE_1MAnt1 2402-2.30≤30PASS 2440-1.59≤30PASS 2480-1.09≤30PASS AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaChannelResult[dBm/3kHz]Limit[dBm/3kHz]Verdict BLE_1MAnt1 2402-17.99≤8.00PASS 2440-17.22≤8.00PASS 2480-16.68≤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 Low2402-2.66-38.44≤-22.66PASS High2480-1.39-43.39≤-21.39PASS 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-2.59-2.59---PASS 30~1000-2.59-45.16≤-22.59PASS 1000~26500-2.59-43.02≤-22.59PASS 2440 Reference-1.97-1.97---PASS 30~1000-1.97-45.21≤-21.97PASS 1000~26500-1.97-44.49≤-21.97PASS 2480 Reference-1.47-1.47---PASS 30~1000-1.47-43.16≤-21.47PASS 1000~26500-1.47-44.29≤-21.47PASS 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 Transmission Duration[ms] Transmission Period[ms] Duty Cycle[%] LimitVerdict BLE_1MAnt1 24020.350.6355.56------ 24400.350.6355.56------ 24800.350.6355.56------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480