2AIHD-2521Worker Safety Wearable

Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Certification designating a U.S. agent for service of process pursuant to Part 2.911(d)(7) To whom it may concern, Samsara, Inc., Grantee Code: 2AIHD (“the applicant”) as required by section 2.911(d)(7), will also serve as the agent for service of process for the above referenced FCC Grantee Code. The service of process includes, but is not limited to, delivery of any correspondence, notices, orders, decisions, and requirements of administrative, legal, or judicial process related to Commission proceedings. The applicant acknowledges that they will 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. The applicant further acknowledges their responsibility to inform the FCC whenever the following agent information changes. Company Name: Samsara, Inc. Company US Address: 1 De Haro Street, San Francisco, CA 94107, United States Contact Person: Ryan Aalund Email: [email protected] Telephone number: 415-985-2400 FRN: 0025597428 Sincerely yours, Signed by the Applicant Name: Ryan Aalund Title: Director Hardware Reliability and Quality Email: [email protected] Date:May 19, 2025

Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Dated: September 5, 2025 Nemko North America, Inc. 303 River Road, Ottawa, Ontario, Canada K1V 1H2 Attn: Director of Certification Appointment of Agent for FCC Certification Application Dear Director of Certification, This letter formally appoints Spencer Zhong of Nemko Canada, Inc. located at 303 River Road, Ottawa, Ontario, Canada K1V 1H2, as our authorized agent to represent us in the application process for equipment certification. We confirm that the submitted documents accurately depict the device or system seeking certification. Additionally, we guarantee that all units produced, imported, or marketed, as defined by FCC regulations, will possess a label identical to the one submitted with this application. By signing below, we certify that neither our company nor any party involved in the application is subject to denial of federal benefits, including FCC benefits, as outlined in Section 5301 of the Anti- Drug Abuse Act of 1988 (21 U.S.C. §862) due to a conviction for possession or distribution of a controlled substance. Furthermore, no party involved in the application, as defined in 47 CFR 1.2002 (b), is subject to denial of federal benefits, including FCC benefits. We attest to the truth and accuracy of the information provided to the FCC to the best of our knowledge (47 CFR 2.911 (d)) and acknowledge our responsibilities as a grantee regarding certified equipment (47 CFR 2.909). In instances where our authorized agent signs the application for certification on our behalf, we understand that Nemko North America, Inc. remains solely responsible for adhering to the terms and conditions for certification as specified by Nemko Canada Inc. Agency agreement expiration date: September 4, 2026 *Up to 12 months Sincerely, Signature: Name: Ryan Aalund Title: Director, Hardware Reliability and Quality Company: Samsara Inc. Address: 1 De Haro St, San Francisco, CA 94107 USA Phone: (415) 985-2400 Email: [email protected]

Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 August 26, 2025 Nemko North America, Inc. 303 River Road Ottawa ON K1V 1H2 Canada ATTN.: Reviewing Engineer Subject: Covered Equipment Certification Attestation Letter Applicant: Samsara Inc. FCC ID: 2AIHD­2521 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. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current FCC Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. 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. Signed: Printed name: Ryan Aalund Title: Director, Hardware Reliability and Quality Company Name: Samsara, Inc Date: August 21, 2025

Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 August 26, 2025 Nemko North America, Inc. 303 River Road Ottawa ON K1V 1H2 Canada ATTN: To Whom It May Concern FCC ID: 2AIHD­2521 Applicant and US Agent FRN: This letter serves as a formal designation, pursuant to §2.911(d)(7) of the FCC Rules, of the following U.S. Agent* for Service of Process for the equipment under application: U.S. Agent for Service of Process: • Company Name: Samsara Inc • Physical U.S. Company Address: 1 De Haro St, San Francisco, CA 94103 U.S. Agent Designation for Service of Process - Certification Attestation Letter The above listed designated agent hereby acknowledges and accepts the obligation for service of process on behalf of the applicant signed below. The applicant further acknowledges and accepts its obligation to maintain a U.S. Agent for Service of Process for a minimum period of one year following either: • Permanent termination of all marketing and importation activities within the U.S. for the applicable equipment by the grantee. • The conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever occurs later. Applicant and US Agent Signed: Signed: Printed name: Ryan Aalund Title: Director Hardware and Reliability and Quality Company Name: Samsara Inc Date: August 26, 2025 0025597428

1 NON-DISCLOSURE AGREEMENT This Non-Disclosure Agreement (the “Agreement”) is entered into by and among (i) Samsara Inc. (the “Company”) and (ii) the party set forth on the signature page to this Agreement under the heading “Recipient” (such party, together with its affiliates and subsidiaries, is referred to in this Agreement as “Recipient”) as of the effective date set forth on the signature page to this Agreement (the “Effective Date”), to protect the confidentiality of certain confidential information of the Company that has been or may be disclosed to Recipient solely for the purpose of Recipient procuring products or services from Company (the “Permitted Use”). 1. Confidential Information. As used in this Agreement, “Confidential Information” means any and all technical, financial, business, or other information provided, disclosed, or made available by the Company to Recipient or any of its Representatives (as defined below), whether before, on, or after the date of this Agreement, which includes, without limitation: (a) any information provided to Recipient or any of its Representatives in connection with any current or future agreement between Recipient and Company; (b) any information related to the Company’s pricing, products, services, technology, software, hardware, firmware, and any features thereof; (c) any information embodied in tangible material (such as documents, drawings, pictures, graphics, software, hardware, graphs, charts, or disks) and labeled as “Confidential” or bearing a similar legend (or identified as such in any transmittal email or other communication); (d) any information disclosed orally or visually and identified as confidential at the time of disclosure; and (e) all other information that Recipient knew, or reasonably should have known, was the Confidential Information of the Company. As used in this Agreement, “Representatives” means the officers, directors, employees, accountants, attorneys, and professional advisors of Recipient. 2. Recipient’s Obligations. Recipient agrees that it and its Representatives (i) shall hold in strict confidence and not disclose to any person or entity any Confidential Information, and (ii) shall not use the Confidential Information for any purpose other than the Permitted Use; provided, however, that Recipient may disclose Confidential Information only to those Representatives who reasonably need to know such information in connection with the Permitted Use, provided that such permitted Representatives shall be informed by Recipient of the confidential nature of such information and shall be bound by confidentiality obligations at least as restrictive as those set forth herein. Without limiting the foregoing, Recipient shall also protect such Confidential Information with at least the same degree of care that Recipient uses to protect its own Confidential Information, but in no case less than reasonable care. Recipient shall be responsible and liable for any unauthorized use of the Confidential Information or any breach of this Agreement by any Representative. Additionally, Recipient shall: (i) immediately notify the Company in the event of any loss or unauthorized disclosure of any Confidential Information; (ii) upon written request of the Company or termination of this Agreement, promptly destroy or return to the Company all documents and other tangible materials representing any Confidential Information and all copies thereof, and provide written certification to Company of the same within ten (10) days; and (iii) not reproduce any Confidential Information in any form except as required for the Permitted Use and provided that any such reproductions contain any and all confidential or proprietary notices or legends that appear on the original. 3. Exclusions; Required Disclosures. Recipient will not have any obligations under this Agreement for information that: (a) was in the public domain at the time it was disclosed to Recipient or entered the public domain subsequent to the time it was disclosed to Recipient, through no fault or breach of this Agreement by Recipient or any other person or entity subject to confidentiality obligations; (b) was in Recipient’s possession free of any obligation of confidence at the time it was disclosed to Recipient; (c) was rightfully communicated to Recipient free of any obligation of confidence subsequent to the time it was disclosed to Recipient; or (d) was independently developed prior to the Effective Date by employees or agents of Recipient who had no access to any Confidential Information. Additionally, Recipient may disclose certain Confidential Information, without violating the obligations of this Agreement to the extent such disclosure is required by a valid order of a court or other governmental body having jurisdiction, provided that Recipient provides the Company with reasonable prior written notice of such disclosure and makes a reasonable effort to seek, or to assist the Company in seeking, to prevent, limit, or protect any such disclosure to the maximum extent allowed under the law. 4. Ownership. Confidential Information is and shall remain the sole property of the Company. Recipient recognizes and agrees that nothing contained in this Agreement will be construed as granting any property rights, by license or otherwise, to any Confidential Information disclosed under this Agreement, or to any invention or any patent, copyright, trademark, or other intellectual property right that has issued or that may issue, based on such Confidential Information. Recipient shall not, and no Representative shall, make, have made, use or sell for any purpose any product or other item using, incorporating or derived from any Confidential Information. Neither this Agreement nor the disclosure of any Confidential Information hereunder shall result in any obligation on the part of either party to enter into any further agreement with the other, license any products or services to the oth…

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Samsara Inc. Dated: September 5, 2025 Nemko North America, Inc. 303 River Road, Ottawa, Ontario, Canada K1V 1H2 Attn: Director of Certification Confidentiality Request Letter – FCC FCC ID: 2AIHD-2521 Pursuant to FCC 47 CFR 0.457(d)(1)(ii) and 0.459 and FCC guidance published in KDB 726920, we hereby request confidential treatment of information accompanying this application as outlined below. Long Term Confidentiality (LTC) request We request the exhibits selected below as long term confidential be withheld from public view permanently: Selection Exhibit name ☒ Block Diagrams ☒ Operation Description / Theory of Operation ☒ Parts List & Placement / BOM ☒ Schematics Short Term Confidentiality (STC) request We also request the exhibits selected below as short term confidential be withheld from public view for a period of 180 days 1 from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public: Selection 2 Exhibit name ☒ External Photos ☒ Test Setup Photos Justification for Confidentiality The development of this product represents a significant investment and a strategic competitive differentiator for our company. Unrestricted public access to its design specifics would negate this hard-earned advantage, leading to considerable financial hardship. In the event of market introduction before the designated short-term confidentiality period expires, the grantee will notify the TCB to ensure timely release of the confidential information on the FCC equipment authorization website. The content herein contains trade secrets and proprietary information not typically released to the public. Disclosure of this information could severely impact the applicant and provide an unfair advantage to competitors. The Applicant acknowledges that, under Rule 0.457(d)(1)(ii), this Application and all associated materials will not be disclosed before the Grant date. Sincerely, Signature: Name: Ryan Aalund Title: Director Hardware Reliability and Quality Company: Samsara Inc Address: 1 De Haro St, San Franciso, CA 94107 USA Phone: 415- 329- 6900 Email: [email protected] 1 - Number of days can be listed up to 180 but should not go past the date of beginning of product marketing/sale. 2 - Any exhibits that may have already been requested to have “Permanent” confidentiality need not be repeated under Short-Term confidentiality request. Samsara Inc.

Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Dated: August 21, 2025 Nemko North America, Inc. 303 River Road, Ottawa, Ontario, Canada K1V 1H2 Attn: Director of Certification Request for Special Confidentiality – FCC FCC ID: 2AIHD-2521 Pursuant to FCC 47 CFR 0.457(d)(1)(ii) and 0.459 and FCC guidance published in KDB 726920, we hereby request confidential treatment of information accompanying this application as outlined below. We request the exhibits selected below as long term confidential (LTC) be withheld from public view permanently: Selection 1 Exhibit name ☒ User’s Manual ☒ Internal Photos Our user manual contains proprietary technical content intended exclusively for professional technicians operating under a Non-Disclosure Agreement (NDA). Distribution or sale of the manual must be contingent upon the recipient’s agreement to an NDA that strictly prohibits the disclosure of its contents. Furthermore, the device’s internal circuitry and components are not accessible to end users and are designed to be serviced solely by authorized technicians under NDA. All product sales must be governed by an NDA that protects proprietary information, including internal photographs. A sample NDA is included with this application. Our company has made substantial investments in the development of this innovative product, which represents a first-of-its -kind solution in the industry. Public disclosure of the technical details would compromise our competitive edge and could result in significant financial harm. Safeguarding the confidentiality of our design is critical to protecting our intellectual property. The information provided includes trade secrets and proprietary data not customarily disclosed to the public. Unauthorized disclosure could adversely impact our business and provide competitors with an unfair advantage. Sincerely, Signature: Name: Ryan Aalund 1 - These items require further information to be provided to TCB before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 and review section II, 3) regarding specific information (NDA) that must accompany these requests. Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Title: Director Hardware Reliability and Quality Company: Samsara Inc Address: 1 De Haro St, San Franciso, CA 94107 Phone: 415-329-6900 Email: [email protected]

4 mm 3.1 mm

Label and Label Location Exhibit Model Number: CW21 FCC ID: 2AIHD-2521 IC: 21492-2521 Applicant: Samsara Inc. Date: August 27, 2025 1. Label Information The product will bear a permanent nameplate or etched label showing the required regulatory identifiers. The label includes: • FCC ID: 2AIHD-2521 • IC: 21492-2521 • Additional markings (model number, serial number, power rating, ICES statement) Label Format 2. Label Location The label is located on the back panel of the device. Label Location Photo 3. Permanence of Label The label is: • Permanently affixed to the product housing using one of the following: o Laser engraving • Visible to the user under normal operating conditions

© 2025 RF Exposure Lab, LLC This report shall not be reproduced except in full without the written approval of RF Exposure Lab, LLC. 802 N. Twin Oaks Valley Road, Suite 105 • San Marcos, CA 92069 • U.S.A. TEL (760) 471-2100 • FAX (760) 471-2121 http://www.rfexposurelab.com CERTIFICATE OF COMPLIANCE SAR EVALUATION Samsara Inc. Dates of Test: August 8, 2025 675 Ponce De Leon Ave NE, Suite 9575 Test Report Number: SAR.20250804 Atlanta, GA 30308 Revision B Lab Designation Number: US1195 This wireless mobile and/or portable device has been shown to be compliant for localized specific absorption rate (SAR) for uncontrolled environment/general exposure limits specified in ANSI/IEEE Std. C95.1-1992 and had been tested in accordance with the measurement procedures specified in IEC 62209-1528:2020 (See test report). I attest to the accuracy of the data. All measurements were performed by myself or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. RF Exposure Lab, LLC certifies that no party to this application is 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. 853(a). Jay M. Moulton Vice President Testing Cert. # 2387.01 Contains FCC ID: 2AIHD-2521 Model(s): 080-00001 Marketing Name: HW-CW21 Test Sample: Engineering Unit Same as Production Serial Number: Eng 1 Equipment Type: Wireless Body Worn Classification: Portable Transmitter Next to Body TX Frequency Range: 2402 – 2480 MHz, 6489.6 – 7987.2 MHz Frequency Tolerance: ± 2.5 ppm Maximum RF Output: 2450 MHz (BT) – 19.0 dBm, UWB - -41.0 dBm/MHz Conducted/Radiated Signal Modulation: GFSK Antenna Type: Internal Trace Antenna Application Type: Certification FCC Rule Parts: Part 2, 15C KDB Test Methodology: KDB 447498 D01 v06 Maximum SAR Value: 0.26 W/kg Reported Separation Distance to Probe: 0 mm Report Number: SAR.20250804 © 2025 RF Exposure Lab, LLC Page 2 of 60 This report shall not be reproduced except in full without the written approval of RF Exposure Lab, LLC. Table of Contents 1. Introduction ................................................................................................................................................ 4 SAR Definition [5] .......................................................................................................................................... 5 2. SAR Measurement Setup .......................................................................................................................... 6 Robotic System ............................................................................................................................................. 6 System Hardware .......................................................................................................................................... 6 System Electronics ........................................................................................................................................ 7 Probe Measurement System ......................................................................................................................... 7 3. Probe and Dipole Calibration ................................................................................................................... 14 4. Phantom & Simulating Tissue Specifications ........................................................................................... 15 Head Simulating Mixture Characterization ................................................................................................... 15 5. RF Exposure Limits [2] ............................................................................................................................. 16 Uncontrolled Environment ............................................................................................................................ 16 Controlled Environment ............................................................................................................................... 16 6. Measurement Uncertainty ........................................................................................................................ 17 7. SAR System Verification .......................................................................................................................... 18 Tissue Verification ....................................................................................................................................... 18 Test System Verification .............................................................................................................................. 18 8. SAR Test Data Summary ......................................................................................................................... 19 Procedures Used To Establish Test Signal .................................................................................................. 19 Device Test Condition .................................................................................................................................. 19 9. SAR Test Results .................................................................................................................................... 22 10. Test Equipment List ............................................................................................................................. 24 11. Conclusion ........................................................................................................................................... 25 12. References .......................................................................................................................................... 26 Appendix A – System Validation Plots and Data ......................................................…

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Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Dated: September 8, 2025 Subject: Antenna Justification Letter for FCC Part 15 Compliance FCC ID: 2AIHD-2521 Model Number: 080-00001 To Whom It May Concern, This letter provides justification for the antenna configuration used in the above-referenced device, submitted for certification under FCC Part 15. UWB radio Radiated Measurement Justification All compliance testing for UWB, including fundamental and spurious emissions, was performed using radiated measurement methods. As such, antenna gain and performance characteristics were inherently captured in the test results. Therefore, no separate antenna gain documentation is required to demonstrate compliance with FCC limits. This approach aligns with the guidance provided in the FCC TCB Workshop (October 2022) and KDB 353028 D01, which allows for a justification statement in lieu of antenna gain documentation when radiated measurements are used exclusively. Antenna Description • Antenna Type: Internal PCB trace antenna • Location: Integrated on the main PCB, as shown in the internal photographs • Estimated Peak Gain: 5.5dBi • Polarization: Linear • Orientation: Horizontal • Frequency Bands Supported: 6–8.5 GHz Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 BLE radio Antenna Gain Justification The BLE antenna is permanently integrated into the product. For testing, the conducted output power of the BLE radio was verified using a temporary connector, with a maximum measured value of 18.5 dBm. The antenna was designed with an estimated gain of approximately 2 dBi. Radiated measurements of the fundamental frequency produced 115.69 dBμV/m at 3 meters, equivalent to an EIRP of 20.46 dBm. This measured value aligns closely with the calculated EIRP (18.5 dBm + 2 dBi = 20.5 dBm), confirming that the estimated antenna gain of 2 dBi is accurate and that antenna performance was inherently captured in the radiated test results. The resulting EIRP remains well below the FCC conducted output power limit of 30 dBm (1 W). Accordingly, no additional antenna gain documentation is required to demonstrate compliance. Antenna Description • Antenna Type: Internal stamped metal antenna • Location: Integrated on the main PCB, as shown in the internal photographs • Dimensions : 12.5mm x 8mm x 6.35mm • Estimated Peak Gain: 2dBi • Polarization: Linear • Orientation: Horizontal • Frequency Bands Supported: 2.4–2.5 GHz Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Supporting details and materials 1. Internal Photographs • Clearly annotate to show antenna location and layout Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 2. PCB Layout Diagrams BLE: UWB: Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 3. Antenna Specifications • BLE antenna, S11 < -6dB in between 2.4GHz to 2.5GHz • UWB antenna, S11 < -6dB in between 6 to 8.5GHz. 4. Estimated Gain Information • Derived from reference design or engineering simulations • No passive reflectors or lenses are used Compliance Statement The UWB and BLE antenna configuration has not been altered in a way that would aiect radiated performance. No external gain-enhancing accessories (e.g., reflectors, lenses) are used. Both antennas are permanently aiixed and not user-accessible or replaceable. Samsara Inc. Samsara Inc. | www.samsara.com | [email protected] 1 De Haro St, San Francisco, CA 94107 Should you require any additional information or clarification, please do not hesitate to contact us. Sincerely, Name: Ryan Aalund Title: Director Hardware Reliability and Quality Company: Samsara Inc Address: 1 De Haro St, San Francisco, CA 94107 USA Phone: 415-329-6900 Email: [email protected]

www.nemko.com Nemko Canada Inc., a testing laboratory, is accredited by ANSI National Accreditation Board (ANAB). The tests included in this report are within the scope of this accreditation. The ANAB symbol is an official symbol of the ANSI National Accreditation Board, used under licence. ANAB File Number: AT-3195 (Ottawa); AT-3193 (Pointe-Claire); AT-3194 (Cambridge) FCC 15.519 and RSS-220, Clause 5.3.docx; Date: July 13, 2025 C h o o s e S c a n d i n a v i a n t r u s t RADIO TEST REPORT Report ID: Project number: REP108507-1 PRJ0097142 Type of assessment: Final product testing Applicant: Description of product: SAMSARA Inc. Worker Safety Wearable Model/HVIN: Product marketing name (PMN): 080-00001 HW-CW21 ISED certification number: FCC ID: IC: 21492-2521 2AIHD-2521 Specifications:  FCC 47 CFR Part 15, Subpart F, §15.519  RSS-220, Clause 5.3, Issue 1, Amendment 1, July 2018 Date of issue: February 26, 2026 Alvin Liu, EMC/RF Specialist Tested by Signature David Duchesne, EMC/RF Lab Manager Reviewed by Signature Report reference ID: REP108507-1 Page 2 of 26 Lab locations Company name Nemko Canada Inc. Facilities Ottawa site: 303 River Road, Ottawa, ON, Canada, K1V 1H2 Tel: +1 613 737 9680 Test site registration number: CA2040 Montréal site: 292 Labrosse Avenue, Pointe-Claire, QC, Canada, H9R 5L8 Tel: +1 514 694 2684 Test site registration number: CA2041 Cambridge site: 1-130 Saltsman Drive, Cambridge, ON, Canada, N3E 0B2 Tel: +1 519 650 4811 Test site registration number: CA0101 Website www.nemko.com Limits of responsibility Note that the results contained in this report relate only to the items tested and were obtained in the period between the date of initial receipt of samples and the date of issue of the report. This test report has been completed in accordance with the requirements of …

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