2BVM3-A4Laser engraving machine

Rev1/26/2023 ShenzhenRuisizhidongTechnologyCo.,Ltd FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-8-19 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BVM3-A4 (“ShenzhenRuisizhidongTechnologyCo.,Ltd”)certifiesthattheequipmentforwhichauthorizationis soughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. (“ShenzhenRuisizhidongTechnologyCo.,Ltd”)certifiesthattheequipmentforwhichauthorizationis soughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc. oranyofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyof itssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB 986446D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature)TaoWuFang (Applicantprintedname) Rev1/26/2023 ShenzhenRuisizhidongTechnologyCo.,Ltd FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-8-19 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BVM3-A4 (“ShenzhenRuisizhidongTechnologyCo.,Ltd”)certifiesthat,asofthedateofthefilingofthe application,ShenzhenRuisizhidongTechnologyCo.,LtdisnotidentifiedontheCoveredList(asa specificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing“covered” equipment. Sincerely, (Applicantsignature) (Applicantprintedname)TaoWuFang

ShenzhenRuisizhidongTechnologyCo.,Ltd 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:ShenzhenRuisizhidongTechnologyCo.,Ltd Address:Room2502,Building6,XingheYinhuValley,Nankeng Community,BantianStreet,Longgang,District,Shenzhen,Guangdong.CN,China ProductName:Laserengravingmachine FCCID:2BVM3-A4 Model(s):A4 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ShenzhenRuisizhidongTechnologyCo.,Ltd](“theapplicant”)designate [CELLTINC.] NOTE1 forthepurposeofacceptingserviceofprocessonbehalfofthe applicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:CELLTINC. Address:140121STST#12958 SACRAMENTO,CA95811,USA FRN:0036412567 Applicant Companyname:ShenzhenRuisizhidong TechnologyCo.,Ltd Address:Room2502,Building6,Xinghe YinhuValley,Nankeng Community,BantianStreet,Longgang, District,Shenzhen,Guangdong.CN, China ShenzhenRuisizhidongTechnologyCo.,Ltd 2.911(d)(7)USAAgentv1.4 ContactName:ThompsonLim TelephoneNo:001-424-3474188 Email:[email protected] FRN:0038291613 FCCGranteeCode:2BVM3 ContactName:TaoWuFang TelephoneNo:13538214502 Email:[email protected] Signature: Title:Manager Signature: Title:Manager Date:2026-8-19Date:2026-8-19 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

ShenzhenRuisizhidongTechnologyCo.,Ltd Date:2026-8-19 Product/ModelNumber:Laserengravingmachine/A4 FCCID:2BVM3-A4 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By:TaoWuFang. ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:13538214502 Onbehalfof:ShenzhenRuisizhidongTechnologyCo.,Ltd

ShenzhenRuisizhidongTechnologyCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August19,2026 Subject;RequestforConfidentiality FCCID:2BVM3-A4 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:TaoWuFang Title:Manager

Label: Laserengravingmachine Model:A4 FCCID:2BVM3‐A4 This device complies with part 15 of the FCC Rules. Operation is subjecttothefollowingtwoconditions:(1)Thisdevicemaynotcause harmfulinterference,and(2)thisdevicemustacceptanyinterference received,includinginterferencethatmaycauseundesiredoperation. 70mm 35mm

FCC ID: 2BVM3-A4 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1091，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g heador body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 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) Limits for General Population/Uncontrolled Exposure 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 = frequency in MHz Friis transmission formula:Pd = (Pout*G)/(4*pi*r 2 ) Where Pd= power density in mW/cm 2 ,Pout= output power to antenna in mW; G= gain of antenna in linear scale,Pi=3.1416; R= distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where theMPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data atlowest, middle and highest channel individually. Test Result of RF Exposure Evaluation So a SAR test is not required Operating Mode Frequency Max Measured Power Tune up tolerance Max Tune up Power Antenna Gain Power Density at R=20cm Power Density Limit Result (MHz)(dBm)(dBm)(dBm)(dBi)(mW/cm 2 )(mW/cm 2 ) WiFi 2.4G2412-246211.9712±11330.007921.0PASS

Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page1of43 RF Test Data Duty Cycle........................................................................................................................................................................ 2 Maximum Average Conducted Output Power..................................................................................................................8 -6dB Bandwidth................................................................................................................................................................9 Occupied Channel Bandwidth........................................................................................................................................15 Maximum Power Spectral Density Level........................................................................................................................21 Band Edge......................................................................................................................................................................27 Conducted RF Spurious Emission................................................................................................................................. 34 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page2of43 Duty Cycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNTb2412Ant149.253.081.69 NVNTb2437Ant149.253.081.69 NVNTb2462Ant149.253.081.69 NVNTg2412Ant149.43.064.89 NVNTg2437Ant149.43.064.89 NVNTg2462Ant149.43.064.89 NVNTn202412Ant148.673.134.99 NVNTn202437Ant148.673.134.99 NVNTn202462Ant148.783.124.99 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page3of43 Duty Cycle NVNT b 2412MHz Ant1 Duty Cycle NVNT b 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page4of43 Duty Cycle NVNT b 2462MHz Ant1 Duty Cycle NVNT g 2412MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page5of43 Duty Cycle NVNT g 2437MHz Ant1 Duty Cycle NVNT g 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page6of43 Duty Cycle NVNT n20 2412MHz Ant1 Duty Cycle NVNT n20 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page7of43 Duty Cycle NVNT n20 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page8of43 Maximum Average Conducted Output Power Conditi on Mod e Frequen cy(MHz) Anten na Conduct edPower (dBm) Duty Fact or (dB) Total Conduct edPower (dBm) Total Conduct edPower (W) Limit Conducted(dB m) Verdi ct NVNT b2412Ant18.543.08 11.62 0.0145230Pass NVNT b2437Ant18.693.08 11.77 0.0150330Pass NVNT b2462Ant18.893.08 11.97 0.0157430Pass NVNT g2412Ant16.723.069.780.0095130Pass NVNT g2437Ant16.73.069.760.0094630Pass NVNT g2462Ant17.433.06 10.49 0.0111930Pass NVNT n20 2412Ant16.593.139.720.0093830Pass NVNT n20 2437Ant16.643.139.770.0094830Pass NVNT n20 2462Ant17.343.12 10.46 0.0111230Pass Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page9of43 -6dB Bandwidth ConditionModeFrequency (MHz) Antenna-6dBBandwidth (MHz) Limit-6dBBandwidth (MHz) Verdict NVNTb2412Ant110.070.5Pass NVNTb2437Ant110.070.5Pass NVNTb2462Ant110.050.5Pass NVNTg2412Ant116.410.5Pass NVNTg2437Ant116.410.5Pass NVNTg2462Ant116.430.5Pass NVNT n202412Ant117.590.5Pass NVNT n202437Ant117.610.5Pass NVNT n202462Ant117.620.5Pass Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page10of43 -6dB Bandwidth NVNT b 2412MHz Ant1 -6dB Bandwidth NVNT b 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page11of43 -6dB Bandwidth NVNT b 2462MHz Ant1 -6dB Bandwidth NVNT g 2412MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page12of43 -6dB Bandwidth NVNT g 2437MHz Ant1 -6dB Bandwidth NVNT g 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page13of43 -6dB Bandwidth NVNT n20 2412MHz Ant1 -6dB Bandwidth NVNT n20 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page14of43 -6dB Bandwidth NVNT n20 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page15of43 Occupied Channel Bandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTb2412Ant113.166 NVNTb2437Ant111.832 NVNTb2462Ant113.199 NVNTg2412Ant116.955 NVNTg2437Ant116.605 NVNTg2462Ant116.989 NVNTn202412Ant118.134 NVNTn202437Ant117.592 NVNTn202462Ant118.125 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page16of43 OBW NVNT b 2412MHz Ant1 OBW NVNT b 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page17of43 OBW NVNT b 2462MHz Ant1 OBW NVNT g 2412MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page18of43 OBW NVNT g 2437MHz Ant1 OBW NVNT g 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page19of43 OBW NVNT n20 2412MHz Ant1 OBW NVNT n20 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page20of43 OBW NVNT n20 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page21of43 Maximum Power Spectral Density Level ConditionModeFrequency (MHz) AntennaConducted PSD (dBm/30kHz) Duty Factor (dB) TotalPSD (dBm/30kHz) Limit (dBm/3kHz) Verdict NVNTb2412Ant1-12.553.08-9.478Pass NVNTb2437Ant1-13.143.08-10.068Pass NVNTb2462Ant1-12.383.08-9.38Pass NVNTg2412Ant1-15.383.06-12.328Pass NVNTg2437Ant1-16.283.06-13.228Pass NVNTg2462Ant1-15.833.06-12.778Pass NVNT n202412Ant1-15.493.13-12.368Pass NVNT n202437Ant1-15.033.13-11.98Pass NVNT n202462Ant1-15.183.12-12.068Pass Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page22of43 PSD NVNT b 2412MHz Ant1 PSD NVNT b 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page23of43 PSD NVNT b 2462MHz Ant1 PSD NVNT g 2412MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page24of43 PSD NVNT g 2437MHz Ant1 PSD NVNT g 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page25of43 PSD NVNT n20 2412MHz Ant1 PSD NVNT n20 2437MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page26of43 PSD NVNT n20 2462MHz Ant1 Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page27of43 Band Edge ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTb2412Ant1-51.29-30Pass NVNTb2462Ant1-55.22-30Pass NVNTg2412Ant1-36.43-30Pass NVNTg2462Ant1-48.21-30Pass NVNTn202412Ant1-35.57-30Pass NVNTn202462Ant1-44.2-30Pass Report No.:SZNTT26026236E1-1 SZNTT-TR728-0Page28of43 Band Edge NVNT b 2412MHz Ant1 Ref Ban…

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Acknowledgment ProjectList ---10 --- 12 ---11 9 8 7 61增益测试 （Gain Test ）6 51S参数测试 （S Parameter ）5 41测试（Test Data）4 31工程成品图 （Drawing）3 21承认书项目表（Spec Item ）2 11承认书封面 （Spec Cover）1 页码 （Page Code） 页数 （Number of Page） 内容 （Contents） NO. Shenzhen Feiyuxin Electronics Co., Ltd. Address:No.76 Baotong South Road, Xikeng Community, Yuanshan Subdistrict, Longgang District, Shenzhen City, Guangdong Province, P.R.China 1 BlackCable Color -40 ~ +85 ̊CStorage Temp. -40 ~ +85 ̊COperating Temp. O.D. 1.13mm // 120 mmCable Type FPCAntenna Material Physical Properties ipexConnector 1 WAdmitted Power Linear, VerticalPolarization 3.2 dB / m Max @ 2450 MHzCable Loss 3dBiGain (Peak) Omni-directionalRadiation -10 dB MaxReturn Loss 1.92 : 1 MaxV.S.W.R 50 0hm Nominal Impedance 2.4GHzFrequency Electrical Properties Test Data S 参数测试 S Parameter Test Agilent E5071C 1 增益测试 Gain Test Antenna Radiation Pattern VS Gain 0 45 90 135 180 225 270 315 -5 -5 -15 -15 -25 -25 -35 -35 -45

Shenzhen NTT Testing Technology Co.,Ltd.Report No.: SZNTT26026236E1-1 SZNTT-TR830-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 1 of 31 TEST REPORT Applicant: Shenzhen Ruisizhidong Technology Co., Ltd Address: Room 2502, Building 6, Xinghe Yinhu Valley, Nankeng Community,BantianStreet, Longgang, District, Shenzhen, Guangdong.CN Manufacturer : Shenzhen Ruisizhidong Technology Co., Ltd Address: Room 2502, Building 6, Xinghe Yinhu Valley, Nankeng Community,BantianStreet, Longgang, District, Shenzhen, Guangdong.CN Product Name : Laser engraving machine Model Number : A4 Trademark: ARTILUME FCC ID: 2BVM3-A4 Test Date: Jun. 27, 2026 to Aug. 24, 2026 Date of Report : Aug. 24, 2026 Test Result: This device described above has been tested by NTT, and the test results show that the equipment under test (EUT) is in compliance with the Standard requirements. And it is applicable only to the tested sample identified in the report. Test Procedure Used: Standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 Prepared by(Test Engineer): Cindy Qin Reviewer(Supervisor): Ken Wu Approved(Manager): Abel Yu Shenzhen NTT Testing Technology Co.,Ltd.Report No.: SZNTT26026236E1-1 SZNTT-TR830-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 2 of 31 TABLE OF CONTENT 1. General Information....................................................................................5 1.1. Description of Device (EUT).......................................................................................................................5 1.2. Channel List..................................................................................................................................................5 1.3. Test configuration.........................................................................................................................................5 1.4. Summary of test result................................................................................................................................6 1.5. Special Accessories and Auxiliary Equipment........................................................................................6 1.6. Test mode......................................................................................................................................................6 1.7. Block Diagram...............................................................................................................................................7 1.8. Test Conditions.............................................................................................................................................7 1.9. Measurement Uncertainty (95% confidence levels, k=2)......................................................................7 1.10. Test Facility..................................................................................................................................................7 1.11. Test Equipment...........................................................................................................................................8 2. Conducted emission at the mains terminals test...................................10 2.1. Limit..............................................................................................................................................................10 2.2. Test Setup....................................................................................................................................................10 2.3. Test Procedure............................................................................................................................................10 2.4. Test Result...................................................................................................................................................11 3. Radiated Spurious Emissions..................................................................13 3.1. Limit..............................................................................................................................................................13 3.2. Test Setup....................................................................................................................................................14 3.3. Test Procedure............................................................................................................................................16 3.4. Test Result...................................................................................................................................................17 4. Duty cycle..................................................................................................24 4.1. Limit..............................................................................................................................................................24 4.2. Test Setup....................................................................................................................................................24 4.3. Test Procedure............................................................................................................................................24 4.4. Test Result...................................................................................................................................................24 5. Conducted Spurious Emissions..............................................................25 5.1. Limit..............................................................................................................................................................25 5.2. Test Setup....................................................................................................................................................25 5.3. Test Procedure.............................................................................…

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