LXC-V2X-RSU-5941MobiQ RSU-5941

DENSO INTERNATIONAL AMERICA, INC 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 TEL: (760) 444-2805 Attestation Letter for Agent 2025/10/14 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911 (d)(7) Filing FCC ID: LXC-V2X-RSU-5941 DENSO International America, Inc certifies that, as of the date of the filing of the application, DENSO International America, Inc is our designated U.S. agent for service of process for the above referenced FCC ID: LXC-V2X-RSU-5941. DENSO International America, Inc agrees to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. DENSO International America, Inc accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company name: DENSO International America, Inc (FRN: 0005820071) Address: 2251 Rutherford Rd, Suite 100, Carlsbad, CA 92008 United States Contact person: Roger Berg Tel: 760-444-2810 Email: [email protected] Sincerely, Applicant Name DENSO International America, Inc. Applicant Printed Name Roger Berg Applicant Signature

DENSO INTERNATIONAL AMERICA, INC 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 TEL: (760) 444-2805 Attestation Letter Date: 10/29/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 DENSO International America, Inc certifies our product Safety Road Side Unit, model: MobiQ RSU-5941, FCC ID: LXC-V2X-RSU-5941, for marketing purpose, only supports channel 183 at 20 MHz bandwidth. The other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely, Roger W. Berg Vice President, North America Research and Development DENSO International America, Inc San Diego Innovation Center 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008

DENSO INTERNATIONAL AMERICA, INC 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 TEL: (760) 444-2805 CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 10/16/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: LXC-V2X-RSU-5941 DENSO International America, Inc “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. Sincerely, --------------------------- Roger W. Berg Vice President, North America Research and Development DENSO International America, Inc San Diego Innovation Center 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008

DE NSO INTERNATIONAL AMERICA, INC 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 TEL: (760) 444-2805 CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 10/16/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing F CC ID: LXC-V2X-RSU-5941 DENSO International America, Inc (“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, and certifies that the equipment does not use Kaspersky's software information. Sincerely, --------------------------- Roger W. Berg Vice President, North America Research and Development DENSO International America, Inc S an Diego Innovation Center 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008

DENSO INTERNATIONAL AMERICA, INC 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 TEL: (760) 444-2805 QA-FR-170-B 7/29/2014 FCC Authorization 10/14/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We DENSO International America, Inc. the undersigned, hereby authorizes Bay Area Compliance Laboratories Corp. to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, ------------------------ Roger W. Berg Vice President, North America Research and Development DENSO International America, Inc San Diego Innovation Center 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 USA

DENSO INTERNATIONAL AMERICA, INC 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 TEL: (760) 444-2805 QA-FR-172 -A FCC Confidential Authorization 10/16/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: LXC-V2X-RSU-5941 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, DENSO International America, Inc hereby requests long-term confidential treatment of information accompanying this application as outlined below: •Block Diagram •Schematics •Operation Description As well as short-term confidential treatment of information accompanying this application as outlined below: • Internal Photos • User’s Manual •External Photos • T est Set-up Photos The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Si ncerely, ------------------------------ Roger W. Berg Vice President, North America Research and Development DENSO International America, Inc Sa n Diego Innovation Center 2251 Rutherford Road, Suite 100 Carlsbad, CA. 92008 USA • BOM and Tune up Procedure

CONFIDENTIAL Symbol A: Product Label RSU-5941 LXC-V2X-RSU-5941 View of Location of FCC Label on side of C-V2X RSU (RSU-5941) FCC ID: LXC-V2X-RSU-5941

DENSO International America, Inc. FCC ID: LXC-V2X-RSU-5941 Report Number: R2509264-CV2X Page 13 of 46 FCC PART 90M Test Report 4 FCC §2.1091 - RF Exposure 4.1 Applicable Standard According to FCC §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 General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 * (100) 30 1.34-30 824/f 2.19/f * (180/f 2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density 4.2 MPE Prediction Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 S = PG/4R² 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 DENSO International America, Inc. FCC ID: LXC-V2X-RSU-5941 Report Number: R2509264-CV2X Page 14 of 46 FCC PART 90M Test Report 4.3 MPE Results Worst Case C-V2X EIRP (dBm): 28.86 Maximum EIRP (mW): 769.13 Prediction distance (cm): 20 Prediction frequency (MHz): 5915 Power density of prediction frequency at 20 cm (mW/cm 2 ): 0.15 MPE limit for uncontrolled exposure at prediction frequency (mW/cm 2 ): 1 Note: The EIRP value was obtained from section 5.6 of this report. It was measured after configuring the EUT to transmit using MIMO mode. Conclusion The device compliances with FCC MPE limit at 20 cm distance.

DENSO International America, Inc. Model: MobiQ RSU-5941 Report Number: R2509264-CV2X Page 1 of 6 FCC Part 90M Test Report Annex A – Frequency Stability Naming Convention: Frequency (MHz) Measurement (Freq Tol) Temperature (-50, -40 -30, -20, -10, 0, 10, 20, 30, 40, 50, 60, 70, 80, 85), Voltage (Low voltage, High Voltage) Port (P1, P2) 5915 MHz FREQ TOL -10 P1 5915 MHz FREQ TOL -10 P2 5915 MHz FREQ TOL -20 P1 5915 MHz FREQ TOL -20 P2 DENSO International America, Inc. Model: MobiQ RSU-5941 Report Number: R2509264-CV2X Page 2 of 6 FCC Part 90M Test Report 5915 MHz FREQ TOL -30 P1 5915 MHz FREQ TOL -30 P2 5915 MHz FREQ TOL 0 P1 5915 MHz FREQ TOL 0 P2 5915 MHz FREQ TOL 10 P1 5915 MHz FREQ TOL 10 P2 DENSO International America, Inc. Model: MobiQ RSU-5941 Report Number: R2509264-CV2X Page 3 of 6 FCC Part 90M Test Report 5915 MHz FREQ TOL 20 P1 5915 MHz FREQ TOL 20 P2 5915 MHz FREQ TOL 30 P1 5915 MHz FREQ TOL 30 P2 5915 MHz FREQ TOL 40 P1 5915 MHz FREQ TOL 40 P2 DENSO International America, Inc. Model: MobiQ RSU-5941 Report Number: R2509264-CV2X Page 4 of 6 FCC Part 90M Test Report 5915 MHz FREQ TOL 50 P1 5915 MHz FREQ TOL 50 P2 5915 MHz FREQ TOL 13.2V P1 5915 MHz FREQ TOL 13.2V P2 5915 MHz FREQ TOL 10.8V P1 5915 MHz FREQ TOL 10.8V P2 DENSO International America, Inc. Model: MobiQ RSU-5941 Report Number: R2509264-CV2X Page 5 of 6 FCC Part 90M Test Report 5915 MHZ FREQ TOL -40 P1 5915 MHZ FREQ TOL -40 P2 5915 MHZ FREQ TOL -50 P1 5915 MHZ FREQ TOL -50 P2 5915 MHZ FREQ TOL 60 P1 5915 MHZ FREQ TOL 60 P2 DENSO International America, Inc. Model: MobiQ RSU-5941 Report Number: R2509264-CV2X Page 6 of 6 FCC Part 90M Test Report 5915 MHZ FREQ TOL 70 P1 5915 MHZ FREQ TOL 70 P2 5915 MHZ FREQ TOL 80 P1 5915 MHZ FREQ TOL 80 P2 5915 MHZ FREQ TOL 85 P1 5915 MHZ FREQ TOL 85 P2

Tel : +886-2-29177353 / http://www.grand-tek.com/ [email protected] / Outdoor IP-67 Wireless 5.9GHz OMNI Antenna 5795~5925MHz GTT EU P/N:OA-59-07-07-CN ✓RFSpecification •Frequency Range: •Polarization: •HPBW / Horizontal: •HPBW / Vertical: •Peak Gain: •Efficiency: •VSWR: •Power Handing: •Impedance: •Connector: ✓Environmental & Mechanical Characteristics •Temperature: -40 °C to +70 °C •Humidity: 95% @55 °C •Antenna Housing Color:White •Antenna Housing Material: ASA •Weight : 60g •Dimensions: 178.0(L)x22.0(W)mm 5795~5925MHz Linear, Vertical 360 ∘ 18 ∘ 7.6 dBiMax. 75% Min. 2.0 Max.:1 2W(cw) 50 Ohms N Plug Page 1 datasheet. Copyright © GTT Wireless Limited| The King Centre, Barleythorpe, Oakham, Rutland, LE15 7WD, United Kingdom | www.gttwireless.com Tel : +886-2-29177353 / http://www.grand-tek.com/ [email protected] / ✓Radiation Pattern ZX-planeXY-plane YZ-plane SUMMARY EFFICIENCYPeak Gain Average Gain Passive Measurement: VSWR, Gain，Efficiency Performance Summary 0% 20% 40% 60% 80% 100% 579558605925 5795MHz~5925MHz -4.0 -3.0 -2.0 -1.0 0.0 1.0 579558605925 5795MHz~5925MHz 4.0 5.0 6.0 7.0 8.0 9.0 579558605925 5795MHz~5925MHz Frequency(MHz)5795 ~ 5925 VSWR2.0 Max. : 1 Copyright © GTT Wireless Limited| The King Centre, Barleythorpe, Oakham, Rutland, LE15 7WD, United Kingdom | www.gttwireless.com

antenna solutions US Office: Tel: 800.648.2800 or +1.847.671.6690 UK Office: Tel: (+44) 1543 459 555 www.mobilemark.com 10 4 Specifications subject to change without notice (9/2018) • Gain configurations from 6 dBi to 12 dBi • Economical, weatherproof and durable design for both indoors and outdoors • Designed for DSRC systems at 5.9 GHz Broadband, Omni-directional DSRC 5.9 GHz Mobile Mark’s ECO Omni antennas are designed for all new data & broadband systems, including DSRC (Dedicated Short Range Communications) systems at 5.9 GHz. Using the latest PCB technology, these antennas improve high-speed broadband system performance in an economical package. These antennas can be used for a variety of wireless applications that fall under the ITS (Intelligent Transportation Systems) umbrella including Smart Highways, Collision Avoidance and Tolling. The antenna element is enclosed in a tough white or black fiberglass radome. The antenna terminates with an integrated N-female. For direct male N mounting, series “RN” can be chosen. These antennas can withstand the harshest outdoor environments, yet are quite attractive for indoor use. Model # Gain Frequency ECO6-5900-WHT 6 dBi Omni 5.9 - 6.0 GHz ECO9-5900-WHT 9 dBi Omni 5.9 - 6.0 GHz ECO12-5900-WHT 12 dBi Omni 5.9 - 6.0 GHz add “RN” Direct mount version with N Male ECO6-5900RN-WHT Recessed N Plug (Male) *Note: “RN” does not include mounting hardware. Color options available for above models WHT-White or BLK-Black Specifications Frequency/Gain: 5.9-6.0 GHz Gain 6-12 dBi (see table) VSWR: 2:1 max over range Impedance: 50 Ohm nominal Max Power: 25 Watts Beamwidth: ECO6 25 o El, 360 o Az ECO9 12 o El, 360 o Az ECO12 7 o El, 360 o Az Operating Temp: -40 o to +85 o C Lightning Protection: External recommended Max Wind Velocity: 125+ mph (193 kph) Material: White or black fiberglass Weight: <0.75 lbs (< 0.340 kg) Antenna Diameter: 0.63 in (1.6 cm) Radome, 0.9 in (2.3 cm) at the base Mounting: Pole or surface mount, mounts up to 2” (5 cm) Includes S.S. saddle Antenna Length: ECO6-5900 10 in (25.4 cm) ECO9-5900 14 in (35.6 cm) ECO12-5900 18 in (45.7 cm) RN Versions 5/8” (16 cm) longer than standard lengths Connector: N Jack (Female) standard RN Option: Recessed N Plug (Male) Shock & Vibration: EN 61373, EN 300 019-2-4, MIL 810G, IEC 60068, IEEE 1478 Water Ingress IPx5 Recessed N Plug (Male) ECO Series 5.9 GHz Models with N Jack (Female)

US Offices & Headquarters 3900-B River Road Schiller Park, IL 60176 USA TEL: (+1) 847 671 6690 or 800-648-2800 FAX: (+1) 847 671-6715 UK Offices 106 Anglesey Business Park Hednesford, Staffs.WS12 1NR UK TEL: (+44) 1543 878343 FAX: (+44) 1543 871714 ECO9-5900 Series DSRC Economical Omni Directional Antenna 9 dBi, 5.85-5.925 GHz ECO9-5900 – Elevation Plot ECO9-5900 – Azimuth Plot Visit our web page at www.mobilemark.com. Specifications subject to change without notice (1/2013).

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA*, NIST, or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*” (Rev.2) FCC PART 90M TEST REPORT For DENSO International America, Inc. 2251 Rutherford Road, Suite 100, Carlsbad, CA 92008-8815, USA FCC ID: LXC-V2X-RSU-5941 R e p o r t T y p e : O r i g i n a l R e p o r t M o d e l : M o b i Q R S U-5 9 4 1 Prepared By: Libass Thiaw Test Engineer Report Number: R2509264-CV2X Report Date: 2025-10-21 Reviewed By: Christian McCaig RF Lead Engineer Bay Area Compliance Laboratories Corp. 1274 Anvilwood Avenue, Sunnyvale, CA 94089, USA Tel: +1 (408) 732-9162, Fax: +1 (408) 732-9164 DENSO International America, Inc. FCC ID: LXC-V2X-RSU-5941 Report Number: R2509264-CV2X Page 2 of 47 FCC PART 90M Test Report TABLE OF CONTENTS 1 General Description ..................................................................................................................................................... 5 1.1 Product Description for Equipment Under Test (EUT) ...................................................................................... 5 1.2 Mechanical Description of EUT ......................................................................................................................... 5 1.3 Objective ............................................................................................................................................................. 5 1.4 Related Submittal(s)/Grant(s) ............................................................................................................................. 5 1.5 Test Methodology ............................................................................................................................................... 5 1.6 Measurement Uncertainty ................................................................................................................................... 6 1.7 Test Facility Registrations .................................................................................................................................. 6 1.8 Test Facility Accreditations ................................................................................................................................ 6 2 System Test Configuration.......................................................................................................................................... 11 2.1 Justification ....................................................................................................................................................... 11 2.2 EUT Exercise Software..................................................................................................................................... 11 2.3 Equipment Modifications.................................................................................................................................. 11 2.4 Support Equipment ........................................................................................................................................... 11 2.5 Antenna Information ......................................................................................................................................... 11 2.6 EUT Internal Configuration Details .................................................................................................................. 11 2.7 External I/O Cabling List and Details ............................................................................................................... 12 2.8 EUT External Power Supply List and Details ................................................................................................... 12 3 Summary of Test Results ............................................................................................................................................ 13 4 FCC §2.1091 - RF Exposure ....................................................................................................................................... 14 4.1 Applicable Standard .......................................................................................................................................... 14 4.2 MPE Prediction ................................................................................................................................................. 14 4.3 MPE Results ..................................................................................................................................................... 15 5 FCC §90.391 – Maximum EIRP ................................................................................................................................. 16 5.1 Applicable Standard .......................................................................................................................................... 16 5.2 Test Procedure .................................................................................................................................................. 16 5.3 Test Setup Block Diagram ................................................................................................................................ 17 5.4 Test Equipment List and Details ....................................................................................................................... 17 5.5 Test Environmental Conditions ........................................................................................................................ 17 5.6 Test Results ........................................................................................…

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