2A86P-SNXGA9Smart Padlock

4DimensionsDistributionCorp. U.S.AgentDesignationforServiceofProcess (ApplicantandU.S.AgentareSeparateParties) TO:FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046,USA ATTENTION:FCCCertification–Section2.911(d)(7)Information DesignatedU.S.Agent CompanyName:4DimensionsDistributionCorp. FRN:0033036922 ContactName:LukasZheng Address:15CHARLOTTEAVE,HICKSVILLE,NY,UnitedStates11801 TelephoneNo:+1-6466274015 Email:[email protected] Thisletteristoconfirmthatwe(“theDesignatedU.S.Agent)haveacceptedtheresponsibilitytoactasthe DesignatedU.S.AgentforServiceofProcessasrequiredbysection47CFR2.911(d)(7)onbehalfofthe Applicantnotedbelow. Date:2025-11-1 U.S.Agent Signature: 7 Signedby(PrintedName/Title):LukasZheng/PARTNER TheApplicantacknowledgesthattheymustmaintainanagentfornolessthanoneyearafterterminatingall marketingandimportationORtheconclusionofanyCommission-relatedproceedinginvolvingthe equipment.TheapplicantfurtheracknowledgestheirresponsibilitytoinformtheFCCwheneverthe DesignatedU.S.Agentinformationabovechanges. Applicant Companyname:4DimensionsDistributionCorp. FCCID:2A86P-SNXGA9 ContactName:LukasZheng Address:18F,15CHARLOTTEAVE,HICKSVILLE,NY,UnitedStates11801 TelephoneNo:+1-6466274015 Email:[email protected] FRN:0033036922 ApplicantSignature: Date:2025-11-17 Signedby(PrintedName/Title):LukasZheng/PARTNER

4DimensionsDistributionCorp. 2025.11.17 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor FCCID:2A86P-SNXGA9 [ 4DimensionsDistributionCorp. ](“theapplicant”)certifiesthattheequipmentfor whichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceivingan equipmentauthorizationpursuanttosection2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipmentdoes notutilizecyber-securityoranti-virussoftwarefromKasperskyLab,Inc,oranyofits successorsandassignees,whichisalsoonthe“coveredlist”. Sincerely, Client’sname/title:LukasZheng/PARTNE Client’s signature: R Contactinformation/address:15CHARLOTTEAVE,HICKSVILLE,NY,United States11801 4DimensionsDistributionCorp. 2025.11.17 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor FCCID:2A86P-SNXGA9 [4DimensionsDistributionCorp.](“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Sincerely, Client’ssignature: Client’sname/title:LukasZheng/PARTNER Contactinformation/address:15CHARLOTTEAVE,HICKSVILLE,NY,United States11801

Declaration on model difference We The main model and subsequent models tested in this test differ only in naming and color. All other aspects, including materials, other manufacturing processes, circuit design, and manufacturers, are exactly the same. We finally decided on the V-SPL-A1BL as the test model. FCCID: 2A86P-SNXGA9 Production name Trade name Model no. Smart Padlock N/A V-SPL-A1BL,V-SPL-A1B,V-SPL-A1WL,V-SPL- A1W,V-SPL-A2BL,V-SPL-A2B,V-SPL-A2WL,V- SPL-A2W,V-SPL-A3BL,V-SPL-A3B,V-SPL- A3WL,V-SPL-A3W Signature: Date: 2025/11/17 Name: Lukas Zheng Title: PARTNER Company: 4 Dimensions Distribution Corp.

4DimensionsDistributionCorp. 2025.11.17 EurofinsElectricalandElectronicTestingNA,Inc. 914W.PatapscoAvenue Baltimore,MD21230 USA RE:CONFIDENTIALITYREQUESTFOR ProductName:SmartPadlock FCCID:2A86P-SNXGA9 Model(s):V-SPL-A1BL,V-SPL-A1B,V-SPL-A1WL,V-SPL-A1W,V-SPL-A2BL,V-SPL- A2B,V-SPL-A2WL,V-SPL-A2W,V-SPL-A3BL,V-SPL-A3B,V-SPL-A3WL,V-SPL-A3W ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459 ofCFR47.Wehaverequestedthatthe -BlockDiagram -Schematics -OperationalDescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublic review. Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsmaybeharmfultothe applicantandprovideunjustifiedbenefitstoitscompetitors. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Client’s signature: Client’s name / title : Lukas Zheng/ PARTNER Contact information / address:15 CHARLOTTE AVE, HICKSVILLE, NY, United States 11801

4DimensionsDistributionCorp. 2025.11.17 EurofinsElectricalandElectronicTestingNA,Inc. 914W.PatapscoAvenue Baltimore,MD21230 USA RE:LETTEROFAGENTAUTHORIZATION ProductName:SmartPadlock FCCID:2A86P-SNXGA9 Model(s):V-SPL-A1BL,V-SPL-A1B,V-SPL-A1WL,V-SPL-A1W,V-SPL-A2BL,V-SPL- A2B,V-SPL-A2WL,V-SPL-A2W,V-SPL-A3BL,V-SPL-A3B,V-SPL-A3WL,V-SPL-A3W ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenBCTCTestingCo.,Ltdtoactonourbehalfinall mattersrelatingtoapplicationforequipmentauthorization,includingthesigningofalldocuments relatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Client’sname/title:LukasZheng/PARTNE Client’s signature: R Contactinformation/address:15CHARLOTTEAVE,HICKSVILLE,NY,United States11801

External Photos

Internal Photos 】 BLE Ant NFC Ant

FCC ID: 2A86P-SNXGA9 RF exposure evaluation According to§15.247(i), §1.1307 (b) and KDB447498, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The SAR-based exemption formula of §1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). F is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate NFC Main Power：78.42dBμV/m=78.42-95.20=-16.78dBm Antenna Gain: 0dBi Conducted Transmit Power Max: = -16.78dBm = 0.02mW EIRP=-16.78dBm ERP= -16.78dBm The maximun ERP power specified is -16.78dBm = 0.02mW BT Antenna Gain: 1.78dBi Conducted Transmit Power Max: = -1.99dBm = 0.63mW EIRP=-1.99dBm+1.78dBi=-0.21dBm ERP= -0.21-2.15dB=-2.36dBm The maximun ERP power specified is -2.36dBm = 0.58mW The source- based time-averaging conducted output power =0.58* Duty factor mW (where Duty Factor≤1) =0.58mW The SAR Exclusion Threshold Level: 푃 th (mW) = ERP 20cm * (푑/20cm) 푥 (X= ) = 2.72 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing.

No.：BCTC/RF-ICT-005 Page: 1 of 52 Edition：C.0 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2507151318-1E Applicant: 4 Dimensions Distribution Corp. Product Name: Smart Padlock Test Model: V-SPL-A1BL Tested Date: 2025-08-19 to 2025-08-29 Issued Date: 2025-11-21 Report No.: BCTC2507151318-1E No.：BCTC/RF-ICT-005 Page: 2 of 52 Edition：C.0 FCC ID:2A86P-SNXGA9 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Smart Padlock Trademark: Model/Type Reference: V-SPL-A1BL,V-SPL-A1B,V-SPL-A1WL,V-SPL-A1W,V-SPL-A2BL,V-SPL-A2B,V- SPL-A2WL,V-SPL-A2W,V-SPL-A3BL,V-SPL-A3B,V-SPL-A3WL,V-SPL-A3W Prepared For: 4 Dimensions Distribution Corp. Address: 15 CHARLOTTE AVE, HICKSVILLE, NY, United States 11801 Manufacturer: 4 Dimensions Distribution Corp. Address: 15 CHARLOTTE AVE, HICKSVILLE, NY, United States 11801 Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2025-08-19 Sample Tested Date: 2025-08-19 to 2025-08-29 Report No.: BCTC2507151318-1E Test Standards: FCC Part15.247 ANSI C63.10-2020 Test Results: PASS Remark: This is Bluetooth BLE radio test report. Tested by: Approved by: Brave Zeng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2507151318-1E No.：BCTC/RF-ICT-005 Page: 3 of 52 Edition：C.0 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table of parameters of text software setting ....................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT Operating Conditions .................................................................................. 13 6.5 Test Result .......................................................................................................... 14 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 24 8.1 Block Diagram Of Test Setup .............................................................................. 24 8.2 Limit .................................................................................................................... 24 8.3 Test Procedure ................................................................................................... 25 8.4 EUT Operating Conditions .................................................................................. 26 8.5 Test Result .......................................................................................................... 26 9. Power Spectral Density Test ............................................................................... 27 9.1 Block Diagram Of Test Setup .............................................................................. 27 9.2 Limit .................................................................................................................... 27 9.3 Test procedure .................................................................................................... 27 9.4 EUT Operating Conditions ............................................................................…

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Product specification 1. Technical indicators of products Frequency Range(MHz) 2400-2500 Band Width(MHz) 100 Impedance(Ω） 50 VSWR 1.91 MAX Return Loss（dB） -15.3 Peak Gain(dBi) 1.78 Polarization Linear Vertical Antenna Material PCB Operating Temp（°C） —20～65 Storage Temp（°C ） —30～75 2. Product picture 3. Return Loss 4. VSWR Frequency MHZ(Efficiency(%) PeakGAIN dbi 2400 2450 2500 1.6 1.75 1.68 43 50 48 5TEST DATA: 6. 3D gain pattern 7. E ,h plan

TEST SETUP PHOTOGRAPHS Conducted Emission Photos Radiated Measurement Photos ----------------The end----------------