2BRQE-C31C31 Agricultural Drone

C31 Agricultural Drone User Manual (V1.2) Ceres Air LLC May 2025 %QR[TKIJV  %GTGU #KT ..% #NN 4KIJVU 4GUGTXGF Revision History VersionRevision DateDescription V1.05/4/2025 V1.18/4/20251. Update Max Takeoff Weight to be 573.2 lbs 2. Add max speed 40mph 3. Add max flight height 98.4 ft 4. Update the max wind speed to be 17.9mph V1.28/9/2025 Correct the hotline number to be+1 (314) 887-4999. %QR[TKIJV  %GTGU #KT ..% #NN 4KIJVU 4GUGTXGF Contents Safety Environment Requirements.......................................................................................................................................1 Flight Environment Requirements.................................................................................................................................1 Pre Flight Checklist....................................................................................................................................................... 2 Safety Considerations During Operation.......................................................................................................................2 Critical rotor stop protocol............................................................................................................................................ 3 Flight restrictions and regulatory compliance...............................................................................................................3 Geo-fencing...................................................................................................................................................................3 No-Drone Zone..............................................................................................................................................................3 Integrated Pesticide Application System...................................................................................................................... 4 Ingress Protection (IP) Rating Specifications................................................................................................................4 Drone Maintenance Instructions................................................................................................................................... 5 Drone Maintenance & Cleaning Protocol...................................................................................................................... 5 Intelligent Battery Storage Protocol.............................................................................................................................. 6 Storage & Transportation Safety Protocol.................................................................................................................... 6 Post-Operation Maintenance Protocol..........................................................................................................................6 Aircraft Body Safety...................................................................................................................................................... 7 Safety Pictograms.........................................................................................................................................................8 Disclaime.............................................................................................................................................................................. 9 Product Overview...............................................................................................................................................................11 Introduction................................................................................................................................................................. 11 Drone Part Nomenclature............................................................................................................................................12 Remote Controller Components................................................................................................................................. 13 Drone Pre-Launch Checklist....................................................................................................................................... 15 Remote Controller Preparation....................................................................................................................................16 External Battery Installation Procedure................................................................................................................16 4G SIM Card Installation Procedure.................................................................................................................... 16 RTK Module Installation Protocol........................................................................................................................ 17 Power Verification Protocol..................................................................................................................................17 Antenna Optimization Procedure.........................................................................................................................17 Setting Stick Mode...............................................................................................................................................17 Stick Calibration...................................................................................................................................................18 Account Registration, Remote Pilot Certification and Identity...........................................................................................18 Go to www.applicatorview.com to Register your Ceres Air User account.................................................................18 Activate Your Aircraft...................................................................................................................…

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CeresAirLLC * theapplicantmustdesignateacontactlocatedintheUnitedStatesforpurposesofactingasthe applicant’sagentforserviceofprocess,regardlessofwhethertheapplicantisadomesticorforeign entity.AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. U.S.AgentDesignationforServiceofProcess- CertificationAttestationLetter DATE TO:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 ATTN.:ReviewingEngineer FCCID:2BRQE-C31 FRNofapplicant:0037173465 Persection2.911(d)(7)oftheFCCrules,[CeresAirLLC](“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisdesignatedtothefollowingU.S.agent*for serviceofprocess: CompanyName:CeresAirLLC FCCRegistrationNumber(FRN):0037173465 PhysicalU.S.CompanyAddress:2265116thAveNE,Suite200-2,Bellevue,Washington 98004,UnitedStates ContactPerson:LeiChen AgentEmailAddress:[email protected] Theabovecontactpersonacceptstheobligationforserviceofprocess. Theapplicantacceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. ApplicantSigned: Signed: Printedname:LeiChen Title:President CompanyName:CeresAirLLC Date:2025/10/21 AgentSigned(ifdifferentfromApplicant): Signed: Printedname:Clickheretoentertext. Title:Clickheretoentertext. CompanyName:Clickheretoentertext. Date:Clickheretoenteradate.

12/1 Fed Auth 7435 Colu USA AT T FCC Cere soug purs Cer e the a of its Cer e soug Kas inte g anti- Guid Sig n Prin Titl e Com Date Co 1/2025 eral Comm u horization a 5 Oakland M umbia, MD 2 A TN.: Review C ID: 2BRQE es Air LLC ( ght is not “c suant to sec Note: If any of t h include es Air LLC ( applicant is s subsidiarie es Air LLC ( ght does no persky Lab, grated Kas -virus softwa dance sectio ned: ted name: L e: President mpany Name e: 12/1/2025 overed Eq unications C nd Evaluatio Mills Road 21046 wing Engin E-C31 (“the applica covered” equ ction 2.903 o the equipm he entities id an explanat (“the applica not identifie es or affiliat (“the applica ot include cy , Inc. or any persky Lab are pursuan on B(2a). Lei Chen e: Ceres Ai 5 C quipment Commission on Division neer ant”) certifie uipment pro of the FCC ent for whi c dentified on tion on why ant”) certifie ed on the C tes) as an e ant”) certifie ybersecurity y of its succe , Inc. (or an nt to DA-24- r LLC Ceres Air LL t Certifica n es that the e ohibited from rules. ch the applic n the current y the equipm es that, as o Covered List entity produc es that the e y or anti-viru essors and y of its suc c -886 and KD LC ation Attes equipment fo m receiving cant seeks a t Covered L ment is not “ of the date o (as a speci cing “covere equipment fo us software assignees, cessors and DB 986446 station Le or which au an equipm e authorizatio List, the app covered” eq of the filing o ifically name ed” equipme or which au produced o including e d assignees D01 Cover e etter thorization i ent authoriz on is produc plicant shoul quipment. of the applic ed entity or ent. uthorization or provided quipment w s) cybersecu ed Equipme is zation ced by ld cation, any is by with urity or ent

December 01, 2025 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BRQE-C31 Product Name: C31 Agricultural Drone Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature>： Name：Lei Chen Title：President Applicant Company：Ceres Air LLC

Dece Fede Auth 7345 Colu On o Bloc Distr agen subm certif defin labe For i beha for c Belle <Sig n Name Title： Applic ember 01, 2 eral Commu horization & 5 Oakland M umbia, Mary our behalf, I ck B, Jun Xia rict, Shenzh nt in the p mitted docu fication is so ned in the F l identical to instances w alf, I acknow certification, evue, Washi nature>： e：Lei Chen President cant Compa 2025 unications C Evaluation D Mills Road land 21046 appoint Sh e ang Da Build hen, China preparation uments prop ought. I also Federal Com o that submit where our au wledge that still resides ington 9800 n any：Ceres ommission Division Author i enzhen Time ding, Zhongs (Name of A of this app perly descr o certify that mmunications tted for appr uthorized ag all responsi with C e r e 4, United St s Air LLC ity to Act as eway Testin shan Park R Agent comp plication for ribe the de t each unit m s Commissi roval with th ent signs th ibility for com es Air LL tates s Agent ng Laborator Road West, T pany name r equipment evice or sy manufacture ion’s regulat his applicatio he applicatio mplying with C / 2265 11 ries/ Zone C Tong Le Vill and addres t certificatio stem for w ed, imported tions will ha on. on for certific h the terms 16th Ave NE C, 1st Floor, lage, Nansh ss) to act as on. I certify which equip d or markete ave affixed t cation on ou and conditio E, Suite 200 han s our y that pment ed, as to it a ur ons -2,

Label Location

SAR evaluation FCC ID: 2BRQE-C31 MPE Calculation Method E (V/m) = (30*P*G) 0.5 /d Power Density: Pd (W/m2) = E 2 /377 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = (30*P*G) / (377*d 2 ) From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. Calculated Image Transmissions Result and Limit (WORSE CASE IS AS BELOW) Antenna Gain (Numeric) Peak Output Power (mW) Power Density (S) (mW/cm2) Limit of Power Density (S) (mW/cm2) Test Result 6.35 dBi （4.315） 359.7 （25.56dBm） 0.3088 1 Compiles Note: Antenna Gain: 3.34dBi (2.4G Band) Assembly Antenna Gain： 6.35dBi (2.4G Band) Assembly Antenna Gain (Numeric): 4.315 ERP=25.56+6.35-2.15=29.76 dBm(946.2mW) 2.4G band and 5G band cannot transmit Simultaneously Calculated WIFI Result and Limit (WORSE CASE IS AS BELOW) Antenna Gain (Numeric) Peak Output Power (mW) Power Density (S) (mW/cm2) Limit of Power Density (S) (mW/cm2) Test Result 3.46 dBi （2.218） 61.80 （17.91dBm） 0.0273 1 Compiles Note: Antenna Gain: 3.46dBi (2.4G Band) Antenna Gain (Numeric): 2.218dBi ERP=17.91+3.46-2.15=19.22 dBm(83.56mW) =359.7/3060+61.80/3060=0.1377 = (946.2+83.56+)/3060 =0.3365 =（ 0.0273+0.3088）/1=0.3361 0.1377+0.3365+0.3361=0.8103<1

Report No.: TW2509006-02E Applicant: Ceres Air LLC Product: C31 Agricultural Drone Model No.: C31 Trademark: N/A Test Standards: FCC Part 15.247 Test result: It is herewith confirmed and found to comply with the requirements set up by ANSI C63.10, FCC Part 15.247 for the evaluation of electromagnetic compatibility Approved By Terry Tang Manager Dated: October 15, 2025 Results appearing herein relate only to the sample tested The technical reports is issued errors and omissions exempt and is subject to withdrawal at SHENZHEN TIMEWAY TESTING LABORATORIES Zone C, 1st Floor, Block B, Jun Xiang Da Building, Zhongshan Park Road West, Tong Le Village, Nanshan District, Shenzhen, China Tel (755) 83448688, Fax (755) 83442996, E-Mail:[email protected] Report No.: TW2509006-02E Page 2 of 92 Date: 2025-10-15 The report refers only to the sample tested and does not apply to the bulk. This report is issued in confidence to the client and it will be strictly treated as such by the SHENZHEN TIMEWAY TESTING LABORATORIES. It may not be reproduced rather in its entirety or in part and it may not be used for adverting. The client to whom the report is issued may, however, show or send it . or a certified copy there of prepared by the SHENZHEN TIMEWAY TESTING LABORATORIES. to his customer. Supplier or others persons directly concerned. SHENZHEN TIMEWAY TESTING LABORATORIES. will not, without the consent of the client enter into any discussion of correspondence with any third party concerning the contents of the report. In the event of the improper use of the report. The SHENZHEN TIMEWAY TESTING LABORATORIES. reserves the rights to withdraw it and to adopt any other remedies which may be appropriate. Special Statement： FCC-Registration No.: 744189 The EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications commission. The acceptance letter from the FCC is maintained in our files. Registration No.: 744189. ISED —Registration No.:5205A The EMC Laboratory has been registered by Certification and Engineering Bureau of ISED for radio equipment testing with Registration No.: 5205A. A2LA (Certification Number:5013.01) The EMC Laboratory has been accredited by the American Association for Laboratory Accreditation (A2LA). Certification Number:5013.01 CAB identifier: CN0033 Report No.: TW2509006-02E Page 3 of 92 Date: 2025-10-15 The report refers only to the sample tested and does not apply to the bulk. This report is issued in confidence to the client and it will be strictly treated as such by the SHENZHEN TIMEWAY TESTING LABORATORIES. It may not be reproduced rather in its entirety or in part and it may not be used for adverting. The client to whom the report is issued may, however, show or send it . or a certified copy there of prepared by the SHENZHEN TIMEWAY TESTING LABORATORIES. to his customer. Supplier or others persons directly concerned. SHENZHEN TIMEWAY TESTING LABORATORIES. will not, without the consent of the client enter into any discussion of correspondence with any third party concerning the contents of the report. In the event of the improper use of the report. The SHENZHEN TIMEWAY TESTING LABORATORIES. reserves the rights to withdraw it and to adopt any other remedies which may be appropriate. Test Report Conclusion Content 1.0 General Details ................................................................................................ 4 1.1 Test Lab Details................................................................................................ 4 1.2 Applicant Details............................................................................................... 4 1.3 Description of EUT ........................................................................................... 4 1.4 Submitted Sample.............................................................................................. 5 1.5 Test Duration................................................................................................... 5 1.6 Test Uncertainty............................................................................................... 5 1.7 Test By.......................................................................................................... 5 2.0 List of Measurement Equipment......................................................................... 6 3.0 Technical Details............................................................................................. 8 3.1 Summary of Test Results..................................................................................... 8 3.2 Test Standards.................................................................................................. 8 4.0 EUT Modification.............................................................................................8 5.0 Power Line Conducted Emission Test...................................................................... 9 5.1 Schematics of the Test........................................................................................ 9 5.2 Test Method and Test Procedure............................................................................ 9 5.3 Configuration of the EUT.................................................................................... 9 5.4 EUT Operating Condition....................................................................................10 5.5 Conducted Emission Limit................................................................................... 10 5.6 Test Result..................................................................................................... 10 6.0 Radiated Emission test...................................................................................... 11 6.1 Test Method and Test Procedure............................................................................ 11 6.2 Configuration of the EUT.................................................................................... 1…

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Report No.: TW2509006-03E Applicant: Ceres Air LLC Product: C31 Agricultural Drone Model No.: C31 Trademark: N/A Test Standards: FCC Part 15.247 Test result: It is herewith confirmed and found to comply with the requirements set up by ANSI C63.10, FCC Part 15.247 for the evaluation of electromagnetic compatibility Approved By Terry Tang Manager Dated: October 15, 2025 Results appearing herein relate only to the sample tested The technical reports is issued errors and omissions exempt and is subject to withdrawal at SHENZHEN TIMEWAY TESTING LABORATORIES Zone C, 1st Floor, Block B, Jun Xiang Da Building, Zhongshan Park Road West, Tong Le Village, Nanshan District, Shenzhen, China Tel (755) 83448688, Fax (755) 83442996, E-Mail:[email protected] Report No.: TW2509006-03E Page 2 of 71 Date: 2025-10-15 The report refers only to the sample tested and does not apply to the bulk. This report is issued in confidence to the client and it will be strictly treated as such by the SHENZHEN TIMEWAY TESTING LABORATORIES. It may not be reproduced rather in its entirety or in part and it may not be used for adverting. The client to whom the report is issued may, however, show or send it . or a certified copy there of prepared by the SHENZHEN TIMEWAY TESTING LABORATORIES. to his customer. Supplier or others persons directly concerned. SHENZHEN TIMEWAY TESTING LABORATORIES. will not, without the consent of the client enter into any discussion of correspondence with any third party concerning the contents of the report. In the event of the improper use of the report. The SHENZHEN TIMEWAY TESTING LABORATORIES. reserves the rights to withdraw it and to adopt any other remedies which may be appropriate. Special Statement： FCC-Registration No.: 744189 The EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications commission. The acceptance letter from the FCC is maintained in our files. Registration No.: 744189. ISED —Registration No.:5205A The EMC Laboratory has been registered by Certification and Engineering Bureau of ISED for radio equipment testing with Registration No.: 5205A. A2LA (Certification Number:5013.01) The EMC Laboratory has been accredited by the American Association for Laboratory Accreditation (A2LA). Certification Number:5013.01 CAB identifier: CN0033 Report No.: TW2509006-03E Page 3 of 71 Date: 2025-10-15 The report refers only to the sample tested and does not apply to the bulk. This report is issued in confidence to the client and it will be strictly treated as such by the SHENZHEN TIMEWAY TESTING LABORATORIES. It may not be reproduced rather in its entirety or in part and it may not be used for adverting. The client to whom the report is issued may, however, show or send it . or a certified copy there of prepared by the SHENZHEN TIMEWAY TESTING LABORATORIES. to his customer. Supplier or others persons directly concerned. SHENZHEN TIMEWAY TESTING LABORATORIES. will not, without the consent of the client enter into any discussion of correspondence with any third party concerning the contents of the report. In the event of the improper use of the report. The SHENZHEN TIMEWAY TESTING LABORATORIES. reserves the rights to withdraw it and to adopt any other remedies which may be appropriate. Test Report Conclusion Content 1.0 General Details................................................................................................. 4 1.1 Test Lab Details................................................................................................ 4 1.2 Applicant Details............................................................................................... 4 1.3 Description of EUT ........................................................................................... 4 1.4 Submitted Sample.............................................................................................. 5 1.5 Test Duration................................................................................................... 5 1.6 Test Uncertainty............................................................................................... 5 1.7 Test By.......................................................................................................... 5 2.0 List of Measurement Equipment.......................................................................... 6 3.0 DESCRIPTION OF TEST MODES..................................................................... 7 4.0 Technical Details............................................................................................. 8 4.1 Summary of Test Results..................................................................................... 8 4.2 Test Standards.................................................................................................. 8 5.0 EUT Modification............................................................................................ 8 6.0 Power Line Conducted Emission Test................................................................... 9 6.1 Schematics of the Test........................................................................................ 9 6.2 Test Method and Test Procedure............................................................................ 9 6.3 Configuration of the EUT.................................................................................... 9 6.4 EUT Operating Condition....................................................................................10 6.5 Conducted Emission Limit................................................................................... 10 6.6 Test Result...................................................................................................... 10 7.0 Radiated Emission test...................................................................................... 11 7.1 Test Method and Test Procedure............................................................................ 11 7.2 Configurat…

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Shenzhen zhongke wireless technology Co.Ltd 1 Product Specification Customer Name: Heilongjiang Huida Technology Co., Ltd Project Name： 2.4G&5.8G PCB Product Spec： ZK-2458G-1.37-MMCX-JW-100 REV： V1.0 Date：2024.12.04 2 Index 1、 Cover 2、Index 3、 Electrical Performance Index 4、Test report 5、Testing Equipment&Principle 6、Product Drawing 3 Electrical Performance Index Electrical Specifications 2400-2500/5100-5850MHZ VSWR ≤2.0 GAIN 2.4G≤3.46 DBI 5.8G≤4.05 DBI Radiation OMNI Polarizatin LINEAR Input Impedance 50 Ω Mechanical Specifications Input connector MMCX-JW Antenna materia PCB Working Temperature -30°C~+80°C Working Humidity 40~85% 4 Test report 1. Antenna standing wave diagram 2. Antenna efficiency Frequency/MHzEfficiency / %MaxGain/dBi 240055.982.85 240554.952.61 241052.482.33 241556.752.92 242057.683.09 242557.152.93 243056.622.52 243556.892.7 244059.022.81 244561.093.03 245059.432.54 245556.752.5 246060.813.03 246562.233.46 247062.233.16 247559.292.85 248060.953.05 248561.383.35 249064.123.43 249558.882.8 250057.942.96 500073.623.29 505070.963.08 5 510070.313.49 515073.623.91 520074.823.75 525072.613.79 530072.444.02 535074.474.01 540076.034.05 545073.963.94 550070.963.79 555074.133.9 560072.613.87 565070.313.41 570068.233.49 575067.143.65 580063.243.38 585063.243.62 590064.864 595063.13.69 600060.953.32 3. Antenna Pattern 6 7 Testing Equipment and Principle 1. Test equipment： Network Analyzers : Agilent 8753D 5071B Communications Test Set: Agilent E5515C CMW500 8820C 3D Chamber Test System： 2. Testing Principles： 8 Product Drawing

Shenzhen be-comfortable Technology Co. Ltd. SPECIFICATION FOR APPROVAL DATE: 2022.12.09 REV.: V1.0 Huida CUSTOMER: HD540 pro External rubber rod antenna N12-7253-R0A PART NAME: SUPPLIER P/N: Date: Pcs Q’TY: CUSTOMER APPROVED BY ENGINEER R&D DEPTBUSSINESS DEPTAPPROVED BY ADD:1606/C6 , Hengfeng Industry Building Baoan District, ShenZhen, ChinaTEL: 86-755-27474071 FAX: 86-755-29976316 Shenzhenbe-comfortableTechnologyCo.Ltd. Index 1.RFFixtureExperiment.....................................................................................................3 1.1TestSetup.....................................................................................................................3 1.2UEconfiguration...........................................................................................................4 2.TestResult.......................................................................................................................5 2.2PassiveTestResult(Sparameters)...............................................................................6 3.Mechanicalinstruction...................................................................................................7 4.Packing............................................................................................................................8 Shenzhenbe-comfortableTechnologyCo.Ltd. 1.RFFixtureExperiment 1.1TestSetup 1.1.1VNATestSetup VSWRandReturnLossmeasurements(S11)wereperformedusinganKeySight E5071CNetworkAnalyzer.Theisolationbetweenantennasisalsoteste.Thetesting wasperformedwithapparatusinfreespace. 1.1.4AnechoicChamberTestSetup WhenwetestGainandEfficiencyoftheantenna,wewillusetheETS3Dchamber. Thechamberprovidestestfrequencyfrom400MHzto6GHz.Therealtestenvironment isshowingasfollowingpicture Shenzhenbe-comfortableTechnologyCo.Ltd. 1.2UEconfiguration 1.2.1Antennalocationpictures Y Z X Shenzhenbe-comfortableTechnologyCo.Ltd. 1.2.2RFmatchingfordifferentantennas E1(0201) NA E2(0201) 0ohm E3(0201) NA 2.TestResult 2.2PassiveTestResult(Sparameters) S11 Shenzhenbe-comfortableTechnologyCo.Ltd. 3D 2.4G 5G Shenzhenbe-comfortableTechnologyCo.Ltd. Efficiency FreqEffiGain (MHz)(%)(dBi) 240047.802.90 241045.552.93 242048.773.05 243048.573.15 244048.823.34 245049.843.19 246051.553.18 247048.533.16 248046.683.02 249049.933.03 250049.222.99 FreqEffiGain (MHz)(%)(dBi) 510042.202.84 520043.063.27 530040.132.87 540044.233.08 550040.433.04 560043.853.31 570045.062.84 580044.282.90 A 0～10 ±0.2 10～18 ±0.5 18～30 ±0.8 30～40 ±1.0 Remark Rev Date Third Angle New drawing Description 40～ ±2.0 Approved by Part No. Date Designed by Checked by Scale Rev mm Location Project Material PartName Unit dwg No. A Angle ±0.5° 1:1 S540 PRO 由 Autodesk 教育版产品制作 RP-SMA 由 Autodesk 教育版产品制作

Radiated Emission Test Setup: