2BTM4-LF855ACAR NAVIGATION SYSTEM

Guangzhou Zhihang Electronics Technology Co.,Ltd Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 [December 17, 2025] U.S. Agent Designation [Guangzhou Zhihang Electronics Technology Co.,Ltd] acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought FCC ID: 2BTM4-LF855A Name and company of U.S. agent: [GLOCERTS TECHNOLOGY INC] Physical U.S. address of agent: [19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507] FRN of U.S. agent: [0036339737] Email address of U.S. agent: [[email protected]] Telephone of U.S.agent: (626) 588-8039 [GLOCERTS TECHNOLOGY INC] acknowledges their obligation to accept service of process on behalf of [Guangzhou Zhihang Electronics Technology Co.,Ltd]. [Guangzhou Zhihang Electronics Technology Co.,Ltd] with the FRN [0037745346] accepts its obligation to maintain an agent for service of process in the United States for no less than 1 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. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. Sincerely, Signature Signature [LI TING] [Huiying Fan] [SALES MANAGER] [Director] [Guangzhou Zhihang Electronics Technology Co.,Ltd] [GLOCERTS TECHNOLOGY INC]

Guangzhou Zhihang Electronics Technology Co.,Ltd (December 15, 2025) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for FCC ID: 2BTM4-LF855A [Guangzhou Zhihang Electronics 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) LI TING Guangzhou Zhihang Electronics Technology Co.,Ltd (December 15, 2025) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for FCC ID: 2BTM4-LF855A [Guangzhou Zhihang Electronics 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. Sincerely, (Applicant signature) (Applicant printed name) LI TING

Guangzhou Zhihang Electronics Technology Co.,Ltd Model Difference Data：December 15, 2025 Product description: CAR NAVIGATION SYSTEM Model name: LF855A, LF856A, LF5044, LF5231, LF6292, LF6294, LF6297, LF5063, LF6295, QG6296SL, LF5045, LF5232, LF6298, LF5064, QG6298SL, YH001, YH002, H855A, H856A, LQ855A, LQ856A, LR855A, LR856A, ND09A, ND10A, GLS855A, GLS856A, ZF855A, ZF856A, ZA855A, ZA856A, CZ855A, CZ856A, CX855A, CX856A, LD855A, LD856A, LDS855A, LDS856A, LH855A, LHS855A Trade Name: NO BRAND/WINCA/ICAR FCC ID: 2BTM4-LF855A All the model are the same circuit and RF module, only the name is different. Regards Sincerely Client’s signature : Client’s name / title : LI TING（SALES MANAGER） Contact information / address：ROOM 101, B20, #46, XINYE ROAD, YONGHE ECONOMIC DEVELOPMENT DISTRICT, HUANGPU AREA, GUANGZHOU

Guangzhou Zhihang Electronics Technology Co.,Ltd (December 15, 2025) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (CAR NAVIGATION SYSTEM / LF855A, LF856A, LF5044, LF5231, LF6292, LF6294, LF6297, LF5063, LF6295, QG6296SL, LF5045, LF5232, LF6298, LF5064, QG6298SL, YH001, YH002, H855A, H856A, LQ855A, LQ856A, LR855A, LR856A, ND09A, ND10A, GLS855A, GLS856A, ZF855A, ZF856A, ZA855A, ZA856A, CZ855A, CZ856A, CX855A, CX856A, LD855A, LD856A, LDS855A, LDS856A, LH855A, LHS855A / FCC ID: 2BTM4-LF855A) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☒ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: LI TING Title: SALES MANAGER

Guangzhou Zhihang Electronics Technology Co.,Ltd (December 15, 2025) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: LI TING Title: SALES MANAGER

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 5 Model: LF855A External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 5 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 5 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 5 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 5 BT ANT WIFI ANT

FCC ID LABEL: Label Location: FCC ID: 2BTM4-LF855A Model No.: LF855A

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2BTM4-LF855A Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), 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 guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna,R=20cm Test Result of RF Exposure Evaluation BT+WIFI supported simultaneous transmission: BT+2.4GWIFI: ∑MPE Ratio =0.00005/1+0.0008/1=0.00085≤1, BT+5GWIFI: ∑MPE Ratio =0.00005/1+0.0093/1=0.00935≤1, So passed. Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result BLE GFSK& MCH 1±1 2 1.5849 0.1205 (-9.19dBi) 0.00004 1 Pass EDR 8DPSK& HCH 2±1 3 1.9953 0.1205 (-9.19dBi) 0.00005 1 Pass 2.4G WIFI 802.11b&2 462 13±1 14 25.1189 0.1683 (-7.74dBi) 0.0008 1 Pass 5.2GWIFI 802.11a20 &5240 14±1 15 31.6228 0.7998 (-0.97dBi) 0.005 1 Pass 5.8GWIFI 802.11ac( VHT20)& 5785 13±1 14 25.1189 1.8535 (2.68dBi) 0.0093 1 Pass

ReportNo.:HTC20250509001 Page1stof14 TESTREPORT Compiledby:Reviewedby: Approvedby:Date:May09,2025 Preparedby: ShenzhenXinHuaTechnologyco.,Ltd E-mail:[email protected] ProductName: Carnavigationwithlargescreen Model/Typereference: BD-9CP232-NL-1,BD-10CP232-NL-1 ReportNumber: HTC20250509001 DateofIssue: May09,2025 TestStandards: GB/T9410-2008 ANSI/IEEEStd149-1979 ReportNo.:HTC20250509001 Page2ndof14 Version Contents 1.GeneralInformation................................................................................................3rd 1.1Generalinformationoftestinginstitutions...................................................3rd 1.2ApplicantandManufacturer.........................................................................3rd 1.3Testingprinciple..........................................................................................3rd 1.4Testequipment.............................................................................................4th 1.5Testenvironment..........................................................................................4th 1.6Statement.......................................................................................................4th 2.SampleInformation..................................................................................................5th 2.1DescriptionofEUT(S).....................................................................................5th 2.2EUTappearance.............................................................................................5th AntennaDimensions...................................................................................................6th 2.3EUTsetupphotooffreespaceOTAtesting........................................................7th 3.TestResults............................................................................................................8th 3.1Testuncertainty...............................................................................................8th 3.2Testdata.........................................................................................................9th 3.2.1VSWRparameters..................................................................................9th 3.2.2VSWRdata............................................................................................9th 3.2.3Typicalfreespaceefficiencyandgain.....................................................9th 3.2.4Radiationpattern.................................................................................10th VersionNo.DateDescription 00May09,2025Original ReportNo.:HTC20250509001 Page3rdof14 1.GeneralInformation 1.1Generalinformationoftestinginstitutions Name ShenzhenXinHuaTechnologyco.,Ltd Address C709,BuildingD,JujiIndustrialPark,YabianXueziwei,ShajingStreet, Bao'anDistrict,ShenzhenCity 1.2ApplicantandManufacturer Applicant/ClientName FoshanBeiqiduoCulturalCreativeCo.,LTD ApplicantAddress Room1013Building1,ZoneB,YunengDigitalPlaza,No.46,Lishui AvenueSouth,LishuiTown,NanhaiDistrict,Foshan,China ManufacturerName FoshanBeiqiduoCulturalCreativeCo.,LTD ManufacturerAddress Room1013Building1,ZoneB,YunengDigitalPlaza,No.46,Lishui AvenueSouth,LishuiTown,NanhaiDistrict,Foshan,China 1.3Testingprinciple ReportNo.:HTC20250509001 Page4thof14 1.4Testequipment EquipmentModelNo.SerialNo.Manufacturer Calibration date Next calibration date OTATest System RayZone-5000 A0011 GTS2023.8.142025.8.13 Network Analyzer E5071CC0017KEYSIGHT2025.4.282026.4.27 1.5Testenvironment Temperature 24.8°C Humidity 83%RH Pressure 100.06kPa 1.6Statement (1)Thetestresultsinthereportareonlyapplicabletothetestedsamplesandthetested samplesworkundertheenvironmentdescribedinthereport. (2)OnlyShenzhenXinHuaTechnologyco.,Ltdhavetherighttomodifythereport,andthe modificationinformationshallbeannotatedintherevisionform. (3)Anyobjectiontothisreportshallberaisedwithin30daysafterformalconfirmationof thereport. (4)Thisreportisinvalidifthereisanyevidencethatthesampleinformationprovidedis falsified. (5)Thereportisinvalidwithoutthesignatureoftheauditorandapprover . ReportNo.:HTC20250509001 Page5thof14 2.SampleInformation 2.1DescriptionofEUT(S) 2.2EUTappearance ViewOfProduct-01 TestItem VSWR;Antennagain;Efficiency;Radiationpattern FrequencyRange 2400-2500MHz、5150-5850MHz ReceivedDate April29,2025 TestDate May08,2025 ReportNo.:HTC20250509001 Page6thof14 ViewOfProduct-02 AntennaDimensions ReportNo.:HTC20250509001 Page7thof14 2.3EUTsetupphotooffreespaceOTAtesting ReportNo.:HTC20250509001 Page8thof14 3.TestResults 3.1Testuncertainty TheuncertaintywascalculatedonthebasisoftheGUMpublishedbyISO,usingthe inclusionfactorofK=2andthe95%confidenceleveltoexpressthe extendeduncertainty. ItemUncertainty VSWR±0.3 Antennagain±0.72dB Radiationefficiency±0.72dB ReportNo.:HTC20250509001 Page9thof14 3.2Testdata 3.2.1VSWRparameters BTAntenna WIFIAntenna ReportNo.:HTC20250509001 Page10thof14 3.2.2VSWRdata 3.2.3Typicalfreespaceefficiencyandgain BTAntenna WIFIAntenna 3.2.4Radiationpattern BTAntenna： （1）2400.0MHzTotal(E1-XZ),Max=-11.25dBi： （2）2450.0MHzTotal(E1-XZ),Max=-9.91dBi： BTAntenna Frequency/MHz 240024502500 VSWR 8.278.698.59 WIFIAntenna Frequency/MHz 240024502500515055505850 VSWR 4.584.265.493.663.473.21 ReportNo.:HTC20250509001 Page11thof14 （3）2500.0MHzTotal(E1-XZ),Max=-9.31dBi： （4）TypicallFreeSpace3DRadiationPatternat2400MHz(unit:dBi) （5）TypicallFreeSpace3DRadiationPatternat2450MHz(unit:dBi) ReportNo.:HTC20250509001 Page12thof14 （6）TypicallFreeSpace3DRadiationPatternat2500MHz(unit:dBi) WIFIAntenna （1）2400.0MHzTotal(E1-XZ),Max=-10.37dBi： （2）2450.0MHzTotal(E1-XZ),Max=-8.32dBi： （3）2500.0MHzTotal(E1-XZ),Max=-8.55dBi： ReportNo.:HTC20250509001 Page13thof14 （4）5150.0MHzTotal(E1-XZ),Max=-5.34dBi （5）5550.0MHzTotal(E1-XZ),Max=-2.82dBi （ 6 ） 5850.0MHzTotal(E1-XZ),Max=-2.35dBi （7）TypicallFreeSpace3DRadiationPatternat2400MHz(unit:dBi) （8）TypicallFreeSpace3DRadiationPatternat2450MHz(unit:dBi) ReportNo.:HTC20250509001 Page14thof14 （9）TypicallFreeSpace3DRadiationPatternat2500MHz(unit:dBi) …

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Report Tel: 4008-707-283Web: http://www.ctb-lab.net Page 1 of 62 TEST REPORT Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. 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 CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Test item description: CAR NAVIGATION SYSTEM FCC ID: 2BTM4-LF855A Trademark(s): NO BRAND/WINCA/ICAR Model/Type reference: LF855A, LF856A, LF5044, LF5231, LF6292, LF6294, LF6297, LF5063, LF6295, QG6296SL, LF5045, LF5232, LF6298, LF5064, QG6298SL, YH001, YH002, H855A, H856A, LQ855A, LQ856A, LR855A, LR856A, ND09A, ND10A, GLS855A, GLS856A, ZF855A, ZF856A, ZA855A, ZA856A, CZ855A, CZ856A, CX855A, CX856A, LD855A, LD856A, LDS855A, LDS856A, LH855A, LHS855A Applicant’s name: Guangzhou Zhihang Electronics Technology Co.,Ltd Address: ROOM 101,B20,#46,XINYE ROAD,YONGHE ECONOMIC DEVELOPMENT DISTRICT,HUANGPU AREA,GUANGZHOU Manufacturer: Guangzhou Zhihang Electronics Technology Co.,Ltd Address: ROOM 101,B20,#46,XINYE ROAD,YONGHE ECONOMIC DEVELOPMENT DISTRICT,HUANGPU AREA,GUANGZHOU Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Nov. 12, 2025 Sample tested Date: Nov. 12, 2025 to Dec. 05, 2025 Issue Date: Dec. 05, 2025 Report No.: CTB25111209301RF04 Test Standards FCC CFR Title 47 Part 15 Subpart E Section 15.407 KDB 789033 V02r01 Test Results PASS Remark: This is WIFI-5GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB25111209301RF04 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 62 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ........................................................................................................................................ 3 2. TEST SUMMARY ........................................................................................................................... 4 3. MEASUREMENT UNCERTAINTY ................................................................................................. 5 4. PRODUCT INFORMATION AND TEST SETUP ............................................................................ 6 4.1 Product Information .......................................................................................................................... 6 4.2 Test Setup Configuration .................................................................................................................. 6 4.3 Support Equipment........................................................................................................................... 6 4.5 Test Mode ........................................................................................................................................ 8 4.6 Test Environment ............................................................................................................................. 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................................................... 9 5.1 Test Facility ...................................................................................................................................... 9 5.2 Test Instrument Used ....................................................................................................................... 9 6. AC POWER LINE CONDUCTED EMISSION ............................................................................... 11 6.1 Block Diagram Of Test Setup ......................................................................................................... 11 6.2 Limit ................................................................................................................................................ 11 6.3 Test procedure ............................................................................................................................... 11 6.4 Test Result ..................................................................................................................................... 13 7. RADIATED SPURIOUS EMISSIONS ........................................................................................... 14 7.1 Block Diagram Of Test Setup ......................................................................................................... 14 7.2 Limit ................................................................................................................................................ 14 7.3 Test procedure ............................................................................................................................... 15 7.4 Test Result ..................................................................................................................................... 16 8. BAND EDGE ................................................................................................................................ 21 8.1 Block Diagram Of Test Setup ......................................................................................................... 21 8.2 Limit ................................................................................................................................................ 21 8.3 Test procedure ............................................................................................................................... 21 8.4 Test Result ............…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: LF855A Radiated Emission Below 1G Above 1G