2BTY3-OSTR1Ostron

SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Declaration Applicant Legal Business Name OSTRON LTD Address 483 Green Lanes London N13 4BS United Kingdom FRN 0037806700 Grantee Code 2BTY3 FCC ID: 2BTY3-OSTR1 Authorized Contact Name Edvardas Damusis Contact Phone +447830694742 Contact Email [email protected] I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare; a)in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. b)in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for: (1)labeling the equipment with the exact FCC ID as specified in this application, (2)compliance statement labeling pursuant to the applicable rules, (3)compliance of the equipment with the applicable technical rules, c)if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC’s technical requirements. d)in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. e)in accordance with ISO 17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements. (1)the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. (2)the Applicant shall make provisions to always have a production sample available upon request by SGS, FCC and/or ISED. (3)the Applicant shall, upon request by SGS, at the Applicant’s expense, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f)neither the Applicant nor any party to the 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. §862 because of a conviction for possession or distribution of a controlled substance. See 47CFR 1.2002(b) for the definition of a “party” for these purposes. g)the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc. terms and conditions as specified in the TCB Application Form 731 (QSF27-14-01). Link to CFRs: https://www.fcc.gov/wireless/bureau-divisions/technologies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs: https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Link to the Covered List: Covered List Applicant Signature: Date: 2026/01/05 Print Name: Edvardas Damusis Title: Director *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database QSF27-14-04 Rev 1.4 April 25, 2025Page 1 of 1 Original Issue: Jan. 4, 2021

SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States FCC COVERED LIST DECLARATION LETTER Applicant Legal Business NameOSTRON LTD Address483 Green Lanes London N13 4BS United Kingdom FRN0037806700 Grantee Code2BTY3FCC ID:2BTY3-OSTR1 Authorized Contact NameEdvardas Damusis Contact Phone+447830694742Contact [email protected] We certifies: -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. -as of the date of the filing of the application, the applicant [is not] identified on the Covered list, established pursuant to §1.50002, as an entity producing “covered” equipment. -the software to be loaded prior to marketing of the equipment identified above is not “covered” software manufactured by any entity including predecessors, successors, parents, subsidiaries, affiliates or any entity which has rebranded or relabeled the software produced by the entity(ies) identified on the “Covered List”. -the device is not capable of storing or running software listed on the covered list and therefore is inherently compliant. NOTE: Justification/evidence explaining how compliance is met must accompany this letter Link to the Covered List: Covered List Applicant Signature:Date: 2026/01/05 Print Name: Edvardas Damusis Title: Director *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database Page 1 of 1 Revision 1.0

UNITED STATES DESIGNATED AGENT LETTER Date: 2026/01/05 TO:Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 ApplicantU.S. designated agent Company Name: OSTRON LTDCompany Name: Baihetian Innovative Solutions FRN:0037806700FRN:0033401605 Grantee Code:2BTY3 Contact Name:Edvardas DamusisContact NameKenneth Young Address:483 Green Lanes London N13 4BS United Kingdom Address:6837 Chase Rd Dearborn, MI 48126, United States Telephone:+447830694742Telephone:(313) 395-3113 Fax:N/AFax:- Email:[email protected]:[email protected] Applicable Equipment: FCC ID:2BTY3-OSTR1 ATTN: Director of Certification: We, < OSTRON LTD > and < Baihetian Innovative Solutions > understand and acknowledge the applicants consent and the designated agent’s obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and e-mail of the designated agent listed above. We, < OSTRON LTD > and < Baihetian Innovative Solutions > acknowledge the applicant’s acceptance of its 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. ApplicantU.S. designated agent Name (Printed): Edvardas DamusisName (Printed): Kenneth Young Title: DirectorTitle: Manager Signature: Signature: May 2026

OSTRON LTD Date: 2026/01/05 TO:Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: FCC ID: 2BTY3-OSTR1 To whom it may concern: We, the undersigned, hereby authorize SGS-CSTC Standards Technical Services Co., Ltd. to act on our behalf in all manners relating to application for equipment authorization with respect to the FCC ID above, including signing of all documents relating to these matters. Any and all acts carried out by the agent on our behalf shall have the same effect as acts of our own. 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. 853(a). Where our agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by SGS North America, Inc., still resides with OSTRON LTD This authorization is valid until further written notice from the applicant. Print Name: Edvardas DamusisTitle: Director Signature: On behalf of Company: OSTRON LTD Telephone: +447830694742 E-mail: [email protected]

OSTRON LTD Date: 2026/01/05 TO:Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: Confidentiality Request regarding application for FCC ID: 2BTY3-OSTR1 LONG TERM CONFIDENTIALITY Pursuant to 47 CFR Section 0.459 and 0.457 of the commission’s rules, the applicant hereby request confidential treatment of the documents listed below, associated with the certification application referenced above. Schematic(s) Block Diagrams Operational Descriptions The documents above contain proprietary information not released to the public. Public disclosure of this information may prove harmful to the business of the applicant. SHORT TERM CONFIDENTIALITY Additionally, the applicant requests the following documents be held confidential until the device is marketed or 180 days from the grant date, whichever is less. If the device is marketed within aforementioned days of the Grant Date, the applicant will notify the TCB per FCC KDB 726920 D01 Confidentiality Request Procedures. External Photos Internal Photos Test Setup Photos User manual(s) Sincerely, Print Name: Edvardas DamusisTitle: Director Signature: On behalf of Company: OSTRON LTD Telephone: +447830694742 E-mail: [email protected]

Label: FCC ID: 2BTY3-OSTR1

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575403 Page: 1 of 10 Keny Xu EMC Laboratory Manager RF EXPOSURE EVALUATION REPORT Application No.: SZCR2512005754AT Applicant: OSTRON LTD Address of Applicant: 483 Green Lanes London N13 4BS United Kingdom Manufacturer: OSTRON LTD Address of Manufacturer: 483 Green Lanes London N13 4BS United Kingdom Factory: OSTRON LTD Address of Factory: 483 Green Lanes London N13 4BS United Kingdom Equipment Under Test (EUT): EUT Name: Ostron Model No.: OST1 Trade Mark: Ostron FCC ID: 2BTY3-OSTR1 Standard(s) : FCC Rules 47 CFR §2.1093 KDB 447498 D04 interim General RF Exposure Guidance v01 Date of Receipt: 2025-12-29 Date of Evaluation: 2025-12-31 to 2026-01-06 Date of Issue: 2026-03-19 Evaluation Result: Pass* * In the configuration evaluated, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575403 Page: 2 of 10 Revision Record Version Chapter Date Modifier Remark 01 2026-03-19 Original Authorized for issue by: Byron Liang/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575403 Page: 3 of 10 2 Contents Page 1 Cover Page ................................................................................................................................................ 1 2 Contents .................................................................................................................................................... 3 3 General Information .................................................................................................................................. 4 3.1 General Description of E.U.T. ............................................................................................................ 4 3.2 Details of E.U.T. ................................................................................................................................. 4 3.3 Separation Distance ........................................................................................................................... 4 3.4 Test Location ...................................................................................................................................... 5 3.5 Test Facility ........................................................................................................................................ 5 3.6 Deviation from Standards ................................................................................................................... 5 3.7 Abnormalities from Standard Conditions ........................................................................................... 5 4 FCC Radiofrequency radiation exposure limits .................................................................................... 6 4.1 Blanket 1 mW Blanket Exemption ...................................................................................................... 6 4.2 MPE-based Exemption ...................................................................................................................... 6 4.3 SAR-based Exemption ....................................................................................................................... 7 4.4 RF Exposure Test Exemptions for Simultaneous Transmission ........................................................ 9 5 Measurement and Calculation ............................................................................................................... 10 5.1 Maximum transmit power ................................................................................................................. 10 5.2 RF Exposure Calculation ................................................................................................................. 10 6 EUT Constructional Details (EUT Photos) ........................................................................................... 10 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575403 Page: 4 of 10 3 General Information 3.1 General Description of E.U.T. Product Type: Portable device Mobile device Fixed device 3.2 Details of E.U.T. Cable(s): USB Type Micro A to C cable: 152CM Operation Frequency: 2402MHz to 2480MHz Modulation Type: GFSK Number of Channels: 40 Channel Spacing: 2MHz Antenna Type: PCB Antenna Antenna Gain: -0.96dBi Remark: The information in this section is provided by the applicant or manufacturer, SGS is not liable to the accuracy, suitability, reliability or/and integrity of the information. 3.3 Separation Distance Minimum test separation distance: 5mm Remark: This minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575403 Page: 5 of 10 3.4 Test Location All tests were performed at: SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen Branch No. 1 Workshop, M-10, Middle Section, Science & Technology Park, Nanshan District, Shenzhen, Guangdong, China. 518057. Tel: +86 755 2601 2053 Fax: +86 755 2671 0594 No tests were sub-contracted. 3.5 Test Facility The test facility is recognized, certified, or accredited by the following organizations: • A2LA (Certificate No. 3816.01) SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory is accredited by the American Association for Laboratory Accreditation(A2LA). Certificate No. 3816.01. • VCCI (Member No. 1937) The 3m Fully-anechoic chamber for above 1GHz, 10m Semi-anechoic chamber for below 1GHz, Shielded Room for Ma…

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` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 1 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 ANTENNA PASSIVE TEST REPORT Application No.SZOA2606000136AT Applicant Ostron Ltd ManufacturerOstron Ltd Product NameOstron Model No.OST1 StandardsANSI/IEEE Std 149-2021 Date Initial Sample(s) Received June 4, 2026 Testing Start Date June 5, 2026 Testing Finish Date June 10, 2026 Report Issue DateJune 15, 2026 *In the configuration tested, the EUT detailed in this report complied with the standards specified above. Prepared by: Yuanyu Luo/ Test EngineerApproved by: Ervin Li/ Technical Manager ` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 2 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 Revision History RevisionIssue DateDescription 01June 15, 2026Initial creation of report ` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 3 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 TABLE OF CONTENTS 1GENERAL INFORMATION....................................................................................................4 1.1Testing Laboratory..............................................................................................................................4 1.2Details of Applicant.............................................................................................................................4 1.3Details of Manufacturer......................................................................................................................4 1.4General Description of EUT..................................................................................................................5 1.5Test Procedure....................................................................................................................................5 1.6Test Specification................................................................................................................................6 1.7Laboratory Environment......................................................................................................................6 2OTA MEASUREMENTS SYSTEM CONFIGURATION......................................................7 2.1Test Configuration...............................................................................................................................7 3TEST EQUIPMENT LIST.......................................................................................................8 4MEASUREMENT UNCERTAINTY.......................................................................................9 5TEST RESULTS.....................................................................................................................10 6PATTERN PLOTS.................................................................................................................11 6.1Return Loss........................................................................................................................................11 6.2VSWR................................................................................................................................................11 6.3Stimulus............................................................................................................................................12 72-D ANTENNA PATTERN..................................................................................................13 83-D ANTENNA PATTERN..................................................................................................14 9THE EUT AND TEST CONFIGURATION.........................................................................15 ` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 4 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 1General Information 1.1Testing Laboratory Test Lab SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Address No. 1 Workshop, M-10, Middle section, Science & Technology Park, Nanshan District, Shenzhen, Guangdong, China 518057 ContactErvin Li Tel.+86 18823369694 Fax+86-755-25328600 [email protected] 1.2Details of Applicant Applicant’s NameOstron Ltd Applicant’s Address483 Green Lanes, London, England, N13 4BS ContactEdvardas Damusis Tel.+447830694742 FaxN/A E-mail [email protected] 1.3Details of Manufacturer Manufacturer’s NameOstron Ltd Manufacturer’s Address483 Green Lanes, London, England, N13 4BS ContactEdvardas Damusis Tel.+447830694742 FaxN/A E-mail [email protected] ` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 5 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 1.4General Description of EUT Device Description: Ostron Device Manufacturer: Ostron Ltd Device Model: OST1 Hardware Version: N/A Software Version: N/A Air Interface Supported N/A Antenna type: N/A 1.5Test Procedure Testing is performed according to the ANSI/IEEE Std 149-2021. ` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 6 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 1.6Test Specification IdentityDocument Title ANSI/IEEE Std 149-2021IEEE Standard Test Procedures for Antennas 1.7Laboratory Environment Temperature Min. =19°C，Max. = 25°C Relative humidity Min. =40%，Max. =72% Shield effect0.7-6GHz> 100dB Ground resistance <0.5 ` SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZOA2606000136AT Rev.:01 Page: 7 of 16 Report Template No./Rev: SZWI-TRF-OA006/ v02 2OTA Measurements System Configuration 2.1Test Configuration Testing Condition: Temperature: 22±3 ̊C Humidity: <80% Measurement Facility: Great-Circle-Cut method is used to measure the antenna 3D GAIN of EUT in OTA qualified anechoic chamber. Equipment Under Test (EUT) geometry centre vertical projecti…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575402 Page: 1 of 64 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZCR2512005754AT Applicant: OSTRON LTD Address of Applicant: 483 Green Lanes London N13 4BS United Kingdom Manufacturer: OSTRON LTD Address of Manufacturer: 483 Green Lanes London N13 4BS United Kingdom Factory: OSTRON LTD Address of Factory: 483 Green Lanes London N13 4BS United Kingdom Equipment Under Test (EUT): EUT Name: Ostron Model No.: OST1 Trade Mark: Ostron FCC ID: 2BTY3-OSTR1 Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2025-12-29 Date of Test: 2025-12-31 to 2026-01-06 Date of Issue: 2026-03-19 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575402 Page: 2 of 64 Revision Record Version Chapter Date Modifier Remark 01 2026-03-19 Original Authorized for issue by: Byron Liang/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575402 Page: 3 of 64 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Emissions at AC Power Line (150kHz-30MHz) 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2020) Section 6.2 47 CFR Part 15, Subpart C 15.207 Pass Radiated Emissions which fall in the restricted bands ANSI C63.10 (2020) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Below 1GHz ANSI C63.10 (2020) Section 6.4,6.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Above 1GHz ANSI C63.10 (2020) Section 6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Conducted Peak Output Power ANSI C63.10 (2020) Section 11.9.1 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Minimum 6dB Bandwidth ANSI C63.10 (2020) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Power Spectrum Density ANSI C63.10 (2020) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement ANSI C63.10 (2020) Section 6.10.4 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2020) Section 11.11 47 CFR Part 15, Subpart C 15.247(d) Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/2 Report No.: SZCR251200575402 Page: 4 of 64 3 Contents Page 1 Cover Page ................................................................................................................................................ 1 2 Test Summary ........................................................................................................................................... 3 3 Contents .................................................................................................................................................... 4 4 General Information .................................................................................................................................. 6 4.1 Details of E.U.T. ................................................................................................................................. 6 4.2 Description of Support Units .............................................................................................................. 6 4.3 Measurement Uncertainty .................................................................................................................. 6 4.4 Test Location ...................................................................................................................................... 7 4.5 Test Facility ........................................................................................................................................ 7 4.6 Deviation from Standards ................................................................................................................... 7 4.7 Abnormalities from Standard Conditions ........................................................................................... 7 5 Equipment List .......................................................................................................................................... 8 6 Radio Spectrum Technical Requirement ............................................................................................. 10 6.1 Antenna Requirement ...................................................................................................................... 10 6.1.1 Test Requirement: ....................................................................................................................... 10 6.1.2 Conclusion ................................................................................................................................... 10 7 Radio Spectrum Matter Test Results .................................................................................................... 11 7.1 Conducted Emissions at AC Power Line (150kHz-30MHz) ............................................................. 11 7.1.1 E.U.T. Operation .......................................................................................................................... 11 7.1.2 Test Mode Description ................................................................................................................. 11 7.1.3 Test Setup Diagram ..................................................................................................................... 12 7.1.4 Measurement Procedure and Data............................................................................................. 12 7.2 Radiated Emissions which fall in the restricted bands ............…

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