2BRGK-GWRBT100Grain Robot

Grain Weevil Corporation | 10327 Chandler Cir Ste. 200 La Vista, NE 68128 | www.grainweevil.com Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: April 13, 2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2BRGK-GWRBT100 Grain Weevil, certifies that, as of the date of the filing of the application, Grain Weevil is our designated U.S. agent for service of process for the above referenced FCC ID. Grain Weevil, accepts 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. Grain Weevil 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: Name: Grain Weevil FRN: 0037365525 Address: 10327 Chandler Cir, La Vista, NE 68128 Contact Person: Trent Johnson Tel.: (605) 413-0214 Email: [email protected] __________________________ US Agent Signature

Grain Weevil Corporation | 10327 Chandler Cir Ste. 200 La Vista, NE 68128 | www.grainweevil.com Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 06-17-2025 Ref: Attestation Statements Part 2.911(d)(5)(i) and Part 2.911(d)(5)(ii) FCC ID: 2BRGK-GWRBT100 and 2BRGK-GWRMT300 Part 2.911(d)(5)(i) Grain Weevil (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment and does not contain anti-virus software or cybersecurity software prohibited from receiving an equipment authorization pursuant to 47 CFR 2.903, KDB 986446 D01 Covered Equipment Guidance, and FCC Covered List (www.fcc.gov/supplychain/coveredlist). Part 2.911(d)(5)(ii) Grain Weevil (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Trent Johnson

Page 1 of 1 Request for Confidentiality Date: June 12, 2026 Subject: Confidentiality Request for: FCC ID: 2BRGK-GWRBT100 IC: 35446-GWRBT100 Pursuant to FCC 47 CFR 0.457(d) and 0.459 and IC RSP-100, Section 12.4, the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Exhibit ☐ Short Term ☒ Permanent ☐ Not Provided Block Diagrams ☒ Short Term ☐ Not Provided External Photos ☒ Short Term ☐ Permanent ☐ Not Provided Internal Photos ☐ Short Term ☒ Permanent ☐ Not Provided Operation Description/Theory of Operation ☐ Short Term ☐ Permanent ☒ Not Provided Parts List & Placement/BOM ☐ Short Term ☐ Permanent ☒ Not Provided Tune-Up Procedure ☐ Short Term ☒ Permanent ☐ Not Provided Schematics ☒ Short Term ☐ Not Provided Test Setup Photos ☒ Short Term ☐ Permanent ☐ Not Provided User’s Manual The above-mentioned company has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality (if applicable): The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days 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. Applicant is also aware that they are responsible to notify Timco in the event information regarding the product or the product is made available to the public before the requested period has expired. Timco will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04- 1705. Sincerely, By: __________________________ Fox Lane, EMC Test Engineer, NCEE Labs

Grain Weevil Corporation | 10327 Chandler Cir Ste. 200 La Vista, NE 68128 | www.grainweevil.com 13 April 2026 Federal Communications Commission Equip Approval Services Post Office Box 358315 Pittsburgh, Pennsylvania 15215-5315 To Whom It May Concern: Pursuant to 47 CFR 2.911, Grain Weevil has authorized Fox Lane, Karthik Vepuri, and Blake Winter of the Nebraska Center for Excellence in Electronics (NCEE Labs), at 4740 Discovery Drive, Lincoln, NE 68521 to act on Grain Weevil behalf for the sole and express purpose of processing applications to the Federal Communication Commission (FCC) for equipment FCC authorization. This authorization is limited to FCC ID: 2BRGK-GWRBT100. Consistent with the foregoing, Fox Lane, Karthik Vepuri, and Blake Winter are authorized to the following: 1. Sign Form 731 2. Sign letters of application 3. Request confidentiality 4. Exchange data and information with the FCC, and authorized TCBs on behalf of Grain Weevil. 5. This authorization is not assignable to others beyond Fox Lane, Karthik Vepuri, and Blake Winter. No party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C 862. We also declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. This authorization expires April 13, 2027. Sincerely, Trent Johnson Senior Product Safety & Compliance Engineer Grain Weevil -----------------------------------------------------nothing follows----------------------------------------------------

The Nebraska Center for Excellence in Electronics (NCEE) authorizes the above-named company to reproduce this report provided it is reproduced in its entirety for use by the company’s employees only. Any use that a third party makes of this report, or any reliance on or decisions made based on it, are the responsibility of such third parties. NCEE accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. This report applies only to the items tested. RF Exposure Evaluation Report Client: Grain Weevil Corporation Address: 10327 Chandler Circle, La Vista, NE, 68128 Model: GWR1.1 Test Report No.: RFE20250702-00-M1 Rev. 0 Approved By: __________________ Fox Lane, EMC Test Engineer Date: June 12, 2026 Total Pages: 9 NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 2 of 9 Revision Page Rev. No. Date Description Original 12 June 2026 Issued by FLane Prepared by FLane NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 3 of 9 1 Regulatory Requirements: FCC Part 1.1310, 2.1091, 2.1093 KDB 447498 D01 RSS-102, Issue 6 Summary: The purpose of this report is to evaluate the EUT’s transmitter for exemption from routine SAR testing. EUT: Model: GWR1.1 FCC ID: 2BRGK-GWRBT100 IC: 35446-GWRBT100 HVIN: GWR1.1 MPE Lab Nebraska Center for Excellence in Electronics MPE Labs FCC Cab Designation: US1060 MPE Labs ISED Cab Designation: US0177 NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 4 of 9 2 FCC FCC Limits, Part 1.1310 Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 6 3.0-30 1842/f 4.89/f *900/f 2 6 30-300 61.4 0.163 1.0 6 300-1,500 f/300 6 1,500-100,000 5 6 (B) 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 30 300-1,500 f/1500 30 1,500-100,000 1.0 30 NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 5 of 9 Occupational/Controlled ☐ General Population/uncontrolled ☒ FCC Power Density Calculations Freq. Conducted Power Antenna Gain Peak Power EIRP Peak Power EIRP +10% for Tolerance Power Density Limit at specified distance % of limit Result MHz mW numerical mW mW mW/cm^2 mW/cm^2 % 903.40 3.589 1.00 3.59 3.95 0.001 0.60 0.131 PASS 60500.00 354.810 1.00 354.81 390.29 0.078 1.00 7.765 PASS 2402.00 0.526 1.58 0.83 0.92 0.000 1.00 0.018 PASS Distance (d) 20 cm S = (P x G)/(4 x π x d^2) – used to calculate exposure at "d" cm EIRP = P x G, measured as field strength d = √(S/(P x G) x 4 X π) – used to calculate minimum distance to meet limits S = power density (mW/cm^2) P = transmitter conducted power (in mW) G = antenna numeric gain (Numerical) d = distance to radiation center (cm) Results: Total % = 0.207 + 7.765 + 0.018 = 7.96% Complies Note: The user’s manual will stipulate that a 20cm distance from the user is to be maintained. EIRP values in mW were multiplied by 1.1 to account for a 10% tolerance. NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 6 of 9 3 ISED RSS 102, Issue 6, Section 6.4 (for distances less than 20cm) NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 7 of 9 RSS 102, Issue 6, Section 6.6 (for distances 20cm or greater) NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 8 of 9 Occupational/Controlled ☐ General Population/uncontrolled ☒ ISED Power Density Calculations Frequency EIRP Antenna Gain Peak Power EIRP Peak Power EIRP +10% for Tolerance Power Density Limit at specified distance % of limit Result MHz mW numerical mW mW mW/cm^2 mW/cm^2 % 903.40 3.589 1.58 5.67 6.24 0.001 0.27 0.452 PASS 60500.00 354.810 1.00 354.81 390.29 0.078 1.00 7.765 PASS 2402.00 0.526 1.58 0.83 0.92 0.000 0.54 0.034 PASS Distance (d) 20 cm S = (P x G)/(4 x π x d^2) – used to calculate exposure at "d" cm EIRP = P x G, measured as field strength d = √(S/(P x G) x 4 X π) – used to calculate minimum distance to meet limits S = power density (mW/cm^2) P = transmitter conducted power (in mW) G = antenna numeric gain (Numerical) d = distance to radiation center (cm) Note: The user’s manual will stipulate that a 20cm distance from the user is to be maintained. EIRP values in mW were multiplied by 1.1 to account for a 10% tolerance. Result: Total % = 0.452 + 7.765 + 0.034 = 8.251% The EUT was found to be exempt from routine SAR testing and COMPLIANT with FCC and ISED RF exposure requirements. NCEE Labs Report Number: RFE20250702-00-M1 Rev. 0 Test Report Prepared for Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 9 of 9 4 Result Device complies with all exposure limits listed in this report. REPORT END

STUB ANTENNA Page 1 of 2 RST-GS-P-51-SMA-H R A L T R O N E L E C T R O N I C S ▪ 1 0 4 0 0 N . W . 3 3 rd S t r e e t ▪ M i a m i , F l o r i d a 3 3 1 7 2 ▪ U . S . A . Telephone: +1-305-593-6033 ▪ Fax: +1-305-594-3973 ▪ e-mail: [email protected] ▪ web: http://www.raltron.com ◼ SPECIFICATIONS ANTENNA PARAMETER VALUE Frequency Range 890 ~ 960 MHz Output VSWR, max 1.5 Impedance 50  Peak Gain 2.00 dBi Wavelength ¼ wave Power, Max 50 W Polarization Vertical Connector Type SMA Male Weight, Max 10 g ◼ MECHANICAL SPECIFICATIONS STUB ANTENNA Page 2 of 2 RST-GS-P-51-SMA-H R A L T R O N E L E C T R O N I C S ▪ 1 0 4 0 0 N . W . 3 3 rd S t r e e t ▪ M i a m i , F l o r i d a 3 3 1 7 2 ▪ U . S . A . Telephone: +1-305-593-6033 ▪ Fax: +1-305-594-3973 ▪ e-mail: [email protected] ▪ web: http://www.raltron.com ◼ ENVIRONMENTAL SPECIFICATIONS PARAMETER VALUE Operating Temperature Range -40 to +85 ̊C Storage Temperature Range -55 to +85 ̊C ◼ APPROVAL RALTRON DRAWN BY LP, May 24, 2016 APPROVED BY CP, May 24, 2016 REVISION A, Initial Release Raltron Electronics/RAMI Technology USA, LLC, including its affiliates, employees, agents and other persons acting on its behalf (collectively Raltron/RAMI Tech), disclaim any and all liability for any errors or inaccuracies contained in this data sheet. While Raltron/RAMI Tech has made every reasonable effort to ensure the accuracy of all product information, specifications and data contained herein, Raltron/RAMI Tech does not guarantee that the information is accurate, reliable or current. The product information is provided for reference purposes only and is subject to change, correction or revision, at any time without notice. Raltron/RAMI Tech does not assume any liability arising out of an application or use of any product described herein and disclaims any warranties expressed or implied. The user of products in such applications shall assume all risks of such use and will agree to hold Raltron/RAMI Tech, harmless against all damages.

The Nebraska Center for Excellence in Electronics (NCEE) authorizes the above named company to reproduce this report provided it is reproduced in its entirety for use by the company’s employees only. Any use that a third party makes of this report, or any reliance on or decisions made based on it, are the responsibility of such third parties. NCEE accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. This report applies only to the items tested. FCC/ISED Test Report Prepared for: Grain Weevil Corporation Address: 10327 Chandler Circle, La Vista, NE 68128 Product: Grain Robot Test Report No: R20250702-00-E2 Rev: 0 Approved by: __________________ Fox Lane, EMC Test Engineer DATE: June 12, 2026 Total Pages: 29 A Report Number: R20250702-00-E2 Rev 0 Prepared for: Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 2 of 29 REVI S I ON PAG E Rev. No. Date Description 0 12 June 2026 Issued by FLane Prepared by Flane A Report Number: R20250702-00-E2 Rev 0 Prepared for: Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 3 of 29 C ON T EN TS Revision Page................................................................................................................................................................................... 2 Contents .......................................................................................................................................................................................... 3 1.0 Summary of test results ....................................................................................................................................... 4 2.0 EUT Description .................................................................................................................................................... 5 2.1 Equipment under test ........................................................................................................................................ 5 2.2 Description of test modes ................................................................................................................................ 5 2.3 Description of support units ............................................................................................................................ 5 3.0 Laboratory and General Test Description ........................................................................................................ 6 3.1 Laboratory description ...................................................................................................................................... 6 3.2 Test personnel ..................................................................................................................................................... 6 3.3 Test equipment.................................................................................................................................................... 7 3.4 General Test Procedure and Setup for Radio Measuremnts ................................................................... 8 4.0 Results .................................................................................................................................................................. 10 4.1 Output Power ..................................................................................................................................................... 11 4.2 Bandwidth ........................................................................................................................................................... 12 4.3 Duty Cycle .......................................................................................................................................................... 13 4.4 Radiated emissions .......................................................................................................................................... 14 4.5 Band edges ........................................................................................................................................................ 18 4.6 Power Spectral Density ................................................................................................................................... 19 Appendix A: Sample Calculation ................................................................................................................................... 20 Appendix B – Measurement Uncertainty ...................................................................................................................... 21 Appendix C – Graphs and Tables .................................................................................................................................. 22 REPORT END ..................................................................................................................................................................... 29 A Report Number: R20250702-00-E2 Rev 0 Prepared for: Grain Weevil Corporation The Nebraska Center for Excellence in Electronics 4740 Discovery Drive Lincoln, NE 68521 Page 4 of 29 1.0 SU MMAR Y OF TEST R ESULT S The worst-case measurements were reported in this report. Summary of test results presented in this report correspond to the following section: (1) US Code of Federal Regulations, Title 47, Part 15 (2) ISED RSS-Gen, Issue 5 (3) ISED RSS-247, Issue 4 APPLIED STANDARDS AND REGULATIONS Standard Section Test Type Result FCC Part 15.35 RSS Gen, Issue 5, Section 6.10 Duty Cycle Pass FCC Part 15.247(b)(3) RSS-247 Issue 4 Section 6 Peak output power Pass FCC Part 15.247(a)(2) RSS-247 Issue 4 Section 6 Bandwidth Pass FCC Part 15.209 RSS-Gen Issue 4, Section 6 Receiver Radiated Emissions Pass FCC Part 15.209 (restricted bands), 15.247 (unrestricted) RSS-247 Issu…

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