2BWRA-CENTAWITHit CENTA SMART TRACKER

Sol-light, LLC 2.911 (d)(7)USA Agent v1.5 Section 2.911(d)(7) USA Agent for Service of Process Company name: Sol-light, LLC Address: 10161 West Park Run Drive, Suite 150 Las Vegas, Nevada 89145, United States Product Name: WITHit CENTA SMART TRACKER FCC ID: 2BWRA-CENTA Model(s): CENTA 2.911(d)(7) USA Designated Agent for Service of Process We, [Sol-light, LLC] (“the applicant”) designate [Sol-light, LLC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Sol-light, LLC 2.911 (d)(7)USA Agent v1.5 USA Agent Company name: Sol-light, LLC Address: 10161 West Park Run Drive, Suite 150 Las Vegas, Nevada 89145, United States FCC Registration Number (FRN): 0038580692 Contact Name: Bill Devaney Telephone No: +1 508-864-5847 Email: [email protected] Applicant Company name: Sol-light, LLC Address: 10161 West Park Run Drive, Suite 150 Las Vegas, Nevada 89145, United States FCC Registration Number (FRN): 0038580692 Grantee Code: 2BWRA Contact Name: Bill Devaney Telephone No: +1 508-864-5847 Email: [email protected] Signature: Title: COO and Cofounder Signature: Title: COO and Cofounder Date: Aug. 07, 2026 Date: Aug. 07, 2026 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Sol-light, LLC Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Aug. 07, 2026 Subject; Request for Confidentiality FCC ID: 2BWRA-CENTA To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Bill Devaney Title: COO and Cofounder

FCC ID LABEL: Ca. 15mm x 5mm Label Location FCC ID: 2BWRA-CENTA

FCC RF Exposure EUT Description: WITHit CENTA SMART TRACKER Model No.: CENTA FCC ID: 2BWRA-CENTA 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The 1‐g and 10‐g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max power of channel, including tune‐up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHz)]≤3.0 for 1‐g SAR and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separation distance mm Result Limit SAR Test Exclusion BLE 2402 0.91 0±1(1) 1.259 5 0.390 3.0 Pass EDR 2480 2.34 2±1(3) 1.995 5 0.628 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2606220669-1E/2E, antenna gain = -11.7dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.628 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 1 of 7 深圳市一加一无线通讯技术有限公司 7thFloor,BuildingB1,HangchengJinchiIndustrial Park,HangchengStreet,BaoanDistrict,Shenzhen City. 承认书 APPROVALSHEET 客户 Customer爱保护 项目名 ProjectB10蓝牙天线 料号 PartNO. 规格 SpecificationBTAntennas Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 2 of 7 Date:Revision:Updatesandchanges:Issuedby: 2026-3-18AInitialsheetHaiou.Zhu Contents 1ANTENNADESCRIPTION...................................................................................3 1.1Partnumber.........................................................................................3 2ELECTRICALPERFORMANCE...........................................................................3 2.1Specification.........................................................................................3 2.2MeasurementSet-up...........................................................................3 2.2.1VSWRandReturnLoss.......................................................................................................................3 2.2.2EfficiencyandGain..............................................................................................................................3 3REFERENCEMEASUREMENTDATA................................................................3 3.1Passive...................................................................................................3 3.2Active....................................................................................................4 4MECHANICALDESCRIPTION.............................................................................6 4.1Drawings...............................................................................................6 APPROVAL OnePlusOne: RFCheckMECheckQCCheckConfirmBy Customer: EECheckPMCheckQCCheckConfirmBy 承认鉴章后请寄回承认书一份 Pleasereturntousonecopyof“APPROVALSHEET”withyourapprovedsignatures Pl Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 3-3 of 7 1Antennadescription ItsummarizeBTantennasforprojectB10.BTantenna’sfrequencybandis2400-2500MHz.BTantenna’stype is单级 1.1Partnumber Partnumberofantenna：B10蓝牙天线 2ElectricalPerformance 2.1Specification BT FrequencyRange 2400MHz~2500MHz <-5 >15% ReturnLoss Efficiency 2.2MeasurementSet-up 2.2.1VSWRandReturnLoss VSWRmeasurements(S 11 )wereperformedusinganAgilentENAseriesNetworkAnalyzerandthepreviously describedtestfixture.Coaxialchokeswereusedtomitigatesurfacecurrentsontheoutsideofthecabling.The testingwasperformedinfreespace. 2.2.2EfficiencyandGain ThegainoftheantennawasmeasuredinOPO’s3DanechoicchamberinShenzhen,China.Thechamberisa ETSsystemcapableofdoingtestsfrom380MHzto6GHz.Coaxialchokesonthefeedcablewereusedto mitigatesurfacecurrentsduringpassivetests.Themeasurementresultsarecalibratedusingdipolestandards. ForTRPandTISthechamberusesa8960/MT8820Ctoestablishtheconnectionwiththemobiledeviceand readthepower. 3Referencemeasurementdata 3.1Passive Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 3-4 of 7 ReturnSWR 3.2Active Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 3-5 of 7 BT Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 3-6 of 7 4.Mechanicaldescription 3.3Drawings Project:B10Author: Haiou.Zhu FileName: B10_APP_A.doc Date:2026-3-18 Revision:A CONFIDENTIAL ShenzhenOnePlusOneWirelessCommunicationTechnologyCo.,Ltd. Page 3-7 of 7 ItemName:BluetoothAntenna 1.CableSpecification:1571,32AWGwithPVCinsulation (1)OuterDiameter:0.6±0.05 mm,Tinned-copperconductor7/0.08 (2)TotalLength:22 mm±1 mm,Black.One-endtinned-strippedlength:1.5 mm 2.AllmaterialscomplywithEURoHS-REACHenvironmentalrequirements. ProductName:BluetoothAntenna 22 mm PartNo.:R0.S0.LYTX.060Date:2025-08-29 Drawnby:LLM Remark:Already supplied ShenzhenWenliWireFactory ContactPerson:LuoLan Tel:+8613682658798 Email:[email protected] Scale: Approvedby: Mr.Chen CustomerConfirmation: LuoLiangMei

Page 1 of 42 Report No.: HK2606220669-1E FCC Test Report Test Report On Behalf of Sol-light, LLC For WITHit CENTA SMART TRACKER Model No.: CENTA FCC ID: 2BWRA-CENTA Prepared For: Sol-light, LLC 10161 West Park Run Drive, Suite 150 Las Vegas, Nevada 89145, United States Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Jun. 22, 2026 ~ Aug. 03, 2026 Date of Report: Aug. 03, 2026 Report Number: HK2606220669-1E Page 2 of 42 Report No.: HK2606220669-1E Test Result Certification Applicant’s Name ................... : Sol-light, LLC Address .................................... : 10161 West Park Run Drive, Suite 150 Las Vegas, Nevada 89145, United States Manufacturer's Name ............. : SHENZHEN SMART CARE TECHNOLOGY LIMITED Address .................................... : Building 2, 1st, 4th, 6th Floor, Anda Electronic Industrial Park, Bao'an District, Shenzhen city, Guangdong Province, 518000, China Product Description Trade Mark ................................. : WITHit Product Name ............................ : WITHit CENTA SMART TRACKER Model and/or Type Reference .. : CENTA Standards ................................ : 47 CFR FCC Part 15 Subpart C 15.247 KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10: 2020 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test .............................................. : Date (s) of Performance of Tests ............... : Jun. 22, 2026 ~ Aug. 03, 2026 Date of Issue ............................................. : Aug. 03, 2026 Test Result ................................................. : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 42 Report No.: HK2606220669-1E Contents Page 1 Summary ......................................................................................................................................................... 5 1.1 Test Procedures and Results .................................................................................................................... 5 1.2 Measurement Uncertainty ......................................................................................................................... 6 1.3 Information of the Test Laboratory ............................................................................................................ 6 2 General Information ....................................................................................................................................... 7 2.1 General Description of EUT ...................................................................................................................... 7 2.2 Description of Test Conditions .................................................................................................................. 9 2.3 Description of Test Setup ........................................................................................................................ 10 2.4 Description of Support Units .................................................................................................................... 11 2.5 The Worse Case Power Setting Parameter ............................................................................................ 11 3 Equipments List for All Test Items ............................................................................................................. 12 4 Test Result .................................................................................................................................................... 13 4.1 Antenna Requirement.............................................................................................................................. 13 4.2 AC Conduction Emissions Measurement ................................................................................................ 14 4.3 Radiated Emissions Measurement .......................................................................................................... 18 4.4 Maximum Peak Output Power Measurement ......................................................................................... 26 4.5 Power Spectral Density ........................................................................................................................... 27 4.6 6dB Bandwidth ........................................................................................................................................ 30 4.7 Occupied Bandwidth ................................................................................................................................ 33 4.8 Band Edge ............................................................................................................................................... 34 4.9 Conducted Spurious Emissions .............................................................................................................. 36 5 Test Setup Photos of the EUT .................................................................................................................... 40 6 Photos of the EUT ........................................................................................................................................ 42 Page 4 of 42 Report No.: HK2606220669-1E ** Issued History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Aug. 03, 2026 Jason Zhou Page 5 of 42 Report No.: HK2606220669-1E 1 Summary 1.1 Test Procedures and Results Note: 1. …

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Test Model: CENTA Radiated Emission AC Conducted Emission RF Conducted Emission