2BXN3-T3laser level

Shandong Tianwen Building Materials Co., LTD

Application Details

Equipment Class: DXX - Part 15 Low Power Communication Device Transmitter
Date of Grant: Aug 31, 2026
Application Purpose: Original Equipment
Equipment Note: laser level
Frequency Range: 2402.00000000 - 2402.00000000
Company: Shandong Tianwen Building Materials Co., LTD
Country: China

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Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Attestation Statements

Rev1/26/2023 ShandongTianwenBuildingMaterialsCo.,LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:08-21-2026 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BXN3-T3 (“ShandongTianwenBuildingMaterialsCo.,LTD”)certifiesthattheequipmentforwhichauthorization issoughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. (“ShandongTianwenBuildingMaterialsCo.,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)Kevincheng (Applicantprintedname) Rev1/26/2023 ShandongTianwenBuildingMaterialsCo.,LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:08-12-2026 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BXN3-T3 (“ShandongTianwenBuildingMaterialsCo.,LTD”)certifiesthat,asofthedateofthefilingofthe application,ShandongTianwenBuildingMaterialsCo.,LTDisnotidentifiedontheCoveredList(asa specificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing“covered” equipment. Sincerely, (Applicantsignature) (Applicantprintedname)Kevincheng

Attestation Statements

ShandongTianwenBuildingMaterialsCo.,LTD 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:ShandongTianwenBuildingMaterialsCo.,LTD Address:RoomA-304,A-305,Building15,HaosenBoyue,JiuquStreet,HedongDistrict, LinyiCity,ShandongProvince,China ProductName:laserlevel FCCID:2BXN3-T3 Model(s):T3,T6,T7,T10,T12 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ShandongTianwenBuildingMaterialsCo.,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:ShandongTianwen BuildingMaterialsCo.,LTD Address:RoomA-304,A-305,Building 15,HaosenBoyue,JiuquStreet,Hedong District,LinyiCity,ShandongProvince, China FRN:0038771697 ShandongTianwenBuildingMaterialsCo.,LTD 2.911(d)(7)USAAgentv1.4 ContactName:ThompsonLim TelephoneNo:001-424-3474188 Email:[email protected] FCCGranteeCode:2BXN3 ContactName:Kevincheng TelephoneNo:19154662616 Email:[email protected] Signature: Title:Manager Signature: Title:SalesManager Date:2026-08-21Date:2026-08-21 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

Cover Letter(s)

ShandongTianwenBuildingMaterialsCo.,LTD Date ： 08-21-2026 Product/ModelNumber:laserlevel/T3,T6,T7,T10,T12 FCCID:2BXN3-T3 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By:Kevincheng ContactListedonFCCWesbite Title:SalesManager Email:[email protected] Telephone:19154662616 Onbehalfof:ShandongTianwenBuildingMaterialsCo.,LTD

Cover Letter(s)

ShandongTianwenBuildingMaterialsCo.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August25,2026 Subject;RequestforConfidentiality FCCID:2BXN3-T3 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:Kevincheng Title:SalesManager

Cover Letter(s)

ShandongTianwenBuildingMaterialsCo.,LTD Product Similarity Declaration Product name: laser level Model name: T3, T6, T7, T10, T12 FCC ID: 2BXN3-T3 We ( Shandong Tianwen Building Materials Co., LTD ) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model number. Signature: Name:Kevin cheng Title: Sales Manager Place, date:Linyi , 2026.08.28

ID Label/Location Info

Label: Model:T3 FCCID:2BXN3-T3 25mm 20mm

RF Exposure Info

FCC ID:2BXN3-T3 RFExposureEvaluation According toKDB 447498 D01 General RF Exposure Guidance v06and part 2.1093， Unless specifically required by thepublished RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required whenthe correspondingSAR Test Exclusion Thresholdcondition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separationdistances ≤ 5 mm, the 1-g and 10-g SAR test exclusion thresholds aredetermined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] ꞏ [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to thenearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, 2.4G Frequency MHz Field strength (dBuV/m) EIRP (dBm) Target power W/ tolerance (dBm) Max tune up power tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds Limit 240291.78-3.42 -3±1.0 -20.63105.000.195583.0 EIRP=E Meas +20log(d Meas )-104.7 EIRP is the equivalent isotropically radiated power, in dBm E Meas is the field strength of the emission at the measurement distance, in dBμV/m d Meas is the measurement distance, in m So a SAR test is not required

Test Report

Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2450MHz 2500MHz2400MHz 2450MHz 2500MHz Center Frequency -1.73-0.84-0.68-6.15-3.70-2.32 MAX. Gain -0.68dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 15.20mm Antenna type PCB Antenna Antenna Photo & Length (mm) Shandong Tianwen Building Materials Co., LTD Room A-304,A-305,Building 15,Haosen Boyue, Jiuqu Street, Hedong District, Linyi City,Shandong Province, China Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-1.73178-30.0815-8.48713 2450-0.845801-38.5605-7.88012 2500-0.685586-24.0318-6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-6.1530-24.1420-13.0295 2450-3.7054-26.5836-10.6700 2500-2.32122-30.4301-9.70536 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Test Report

Shenzhen NTT Testing Technology Co.,Ltd. Report No.: SZNTT26030535E1-1 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 1 of 23 TEST REPORT Applicant: Shandong Tianwen Building Materials Co., LTD Address: Room A-304,A-305,Building 15,Haosen Boyue, Jiuqu Street,Hedong District, Linyi City,Shandong Province, China Manufacturer : Shandong Tianwen Building Materials Co., LTD Address: Room A-304,A-305,Building 15,Haosen Boyue, Jiuqu Street,Hedong District, Linyi City,Shandong Province, China Product Name : laser level Model Number : T3, T6, T7, T10, T12 Trademark: N/A FCC ID: 2BXN3-T3 Test Date: Jul. 25, 2026 to Aug. 28, 2026 Date of Report : Aug. 28, 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 15.249 ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 Prepared by(Test Engineer): Cindy Qin Approved(Manager): Ken Wu Approved(Manager): Abel Yu Shenzhen NTT Testing Technology Co.,Ltd. Report No.: SZNTT26030535E1-1 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 2 of 23 TABLE OF CONTENT 1. General Information....................................................................................4 1.1. Description of Device (EUT).......................................................................................................................4 1.2. Channel List..................................................................................................................................................4 1.3. Summary of test result................................................................................................................................5 1.4. Special Accessories and Auxiliary Equipment........................................................................................5 1.5. Test mode......................................................................................................................................................5 1.6. Test configuration.........................................................................................................................................5 1.7. Block Diagram...............................................................................................................................................6 1.8. Test Conditions.............................................................................................................................................6 1.9. Measurement Uncertainty (95% confidence levels, k=2)......................................................................6 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...................................................................................................................................................10 3. Radiated Spurious Emissions..................................................................11 3.1. Limit..............................................................................................................................................................11 3.2. Test Setup....................................................................................................................................................12 3.3. Test Procedure............................................................................................................................................14 3.4. Test Result...................................................................................................................................................15 4. -20 dB Bandwidth Measurement..............................................................20 4.1. Limit..............................................................................................................................................................20 4.2. Test Setup....................................................................................................................................................20 4.3. Test Procedure............................................................................................................................................20 4.4. Test Result...................................................................................................................................................20 5. Antenna Requirement...............................................................................22 6. TEST SETUP & EUT PHOTOGRAPH........................................................23 Shenzhen NTT Testing Technology Co.,Ltd. Report No.: SZNTT26030535E1-1 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage 3 of 23 Revision History of This Test Report Report NumberDescriptionIssued Date SZNTT26030535E1-1 Initial Issue2026-08-28 Shenzhen NTT Testing Technology Co.,Ltd. Report No.: SZNTT26030535E1-1 SZNTT-TR828-0Tel:0755-27889935Web:http:/…

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