2ARXB-B4PROSmart Label Printer

2.911 (d)(7)USA Agent v1.2 Section 2.911(d)(7) USA Agent for Service of Process Company name: Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Address: No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China FCC ID: 2ARXB-B4PRO Date: May 25, 2026 2.911(d)(7) USA Designated Agent for Service of Process We, [Wuhan Jingchen Intelligent Identification Technology Co., Ltd.] (“the applicant”) designate [Wedo Group] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our 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. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address 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. USA Agent Company name: Wedo Group Address: 710 Arabian Ln Walnut, CA 91789, United States FRN：0037730611 Contact Name: Jeffrey Chen Telephone No: (323) 528-1888 Email: [email protected] Applicant Company name: Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Address: No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China FRN: 0028040269 Contact Name: Shenghua Hu Telephone No: +86-15827606851 Email: [email protected] Signature: Signature:

Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Code 00018768 Ed. 1 Item 1. The device is able to install software/program installation? ☐ Yes, go to Item 2. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky cybersecurity or anti-virus software. Item 2. Technical Requirements for Kaspersky Cybersecurity Software: # General Requirements (For all Devices) Yes / No or N/A Comments 1 Internet connection for activation and updates (For all Operating Systems) N/A Device Smart Label Printer Company name Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Grantee code 2ARXB FCC ID 2ARXB-B4PRO FRN 0028040269 Contact name Shenghua Hu Address No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China Telephone number +86-15827606851 E-mail [email protected] Chipset/module information RTL8711DAN & FM17601 & BR8051A01 Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 # General Requirements (For Windows Devices) Yes / No or N/A Comments 1 Storage: 1500 MB free space on the hard drive N/A 2 Operating System: Microsoft Windows 8, 8.1, 10 & 11 Home / Pro / Enterprise Microsoft Windows 7 Starter / Home Basic & Premium / Professional / Ultimate SP1 or higher N/A 3 Processor: 1 GHz or higher (x86 or x64) N/A 4 Memory (RAM)1 GB (32-bit) or 2 GB (64-bit) N/A 5 Screen Resolution: Minimum resolution of 1024 x 768 N/A # General Requirements (For macOS devices) Yes / No or N/A Comments 1 Operating System macOS® 13 – 14 N/A 2 Memory (RAM)4 GB N/A 3 Storage: 3455 MB free space on the hard drive N/A # General Requirements (For Android Devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: Android™ 10 – 14 N/A 3 Screen Resolution: Minimum resolution of 320 x 480 N/A # General Requirements (for iOS devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: iOS® 17 N/A # General Requirements (For Linux system) Yes / No or N/A Comments 3 1 Hard drive: 1 GB of free space N/A 2 CPU: Intel Pentium 1 GHz or higher N/A 3 RAM: 1 GB N/A 4 Minimum software requirements: AlmaLinux OS 8 or later; AlterOS 7.5 or later; Astra Linux Common Edition 2.12 or later; CentOS 6.7 or later; Debian GNU/Linux 10.0 or later; EulerOS 2.0 or later; Oracle Linux 7.3 or later ; Red Hat Enterprise Linux 6.7 or later ; Rocky Linux 8.5 or later ; SUSE Linux Enterprise Server 12.5 or later; Ubuntu 12.04 or later ; Uncom OS Home / Business / Education / Enterprise 2.2 or later; ALT Linux Workstaton / Workstation K / Server / Education 8 or later; ROSA Linux Workstation / Server 12 or later ; RED OS 7.3 and later ; N/A After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software Item 3. Connectivity Capabilities: 4 # Physical Interface Purpose Justification 1 1 # Wireless Interface Purpose Justification 1 1 After the review of this items, the device: ☒ Cannot support installation of any cybersecurity or anti-virus software on the covered list. ☐ Potentially can operate with any cybersecurity or anti-virus software on the covered list – additional third- party proof is provided to demonstrate compliance with requirements as of 2.911(d)5(i),(ii) – “Proof of Compliance with Covered List Software Requirements” of this document applies Signature: Name: Shenghua Hu Date: May 25, 2026 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

TCB CALL página 1 File FCC ID: 2ARXB-B4PRO Please upload an exhibit that explains how does the TCB verify the new agent information: 1- Is the address of the agent a valid physical US mailing address (not a US post office box, not a virtual mailbox, not P.O. Boxes, not a vacant lot, not a public building, etc.) ○ We have checked if the address exists in a real and potential building (Google maps) + official US register, after this verification and the evidence below we can guarantee the following: not a US post office box not a virtual mailbox not P.O. Boxes not a vacant lot not a public building(note) ► We checked the FCC FRN Search based on the information provided by the grantee. On the official register from : https://bizfileonline.sos.ca.gov/search/business TCB CALL página 2 TCB CALL página 3 TCB CALL página 4 In google maps: TCB CALL página 5 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "2.911_(d)(7) US Agent" included in the file is ok. 2- Is the agent physically located at that valid US address such that the agent can be legally served at that address? Yes , check above 3- Has the listed agent clearly agreed in writing to serve as the agent for the grantee at that address? Yes, it is included in the exhibit "2.911_(d)(7) US Agent" >

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Address: No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China Product Name: Smart Label Printer Model Number: NIIMBOT B4 Pro FCC Identifier: 2ARXB-B4PRO We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Shenghua Hu Date: May 25, 2026 Title: Manager Signature of applicant:

C5266091_X13_Ed.1 1/1 Wuhan Jingchen Intelligent Identification Technology Co., Ltd. No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China FCC Software Configuration Control Declaration Date: May 25, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Attn: OET Dept. Product/ Model Number: Smart Label Printer/ NIIMBOT B4 Pro Regarding FCC Country Code Selection guidelines identified in KDB 594280. “All applications for equipment authorization for transmitters that can have radio parameters, or other technical parameters, reported to the Commission set by software must have an attestation indicating that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified.” We declare that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. Signature of applicant Name: Shenghua Hu Title: Manager

Page1of73 SARTestReport ReportNo.:AGC07434251208FH01 FCCID: 2ARXB-B4PRO APPLICATIONPURPOSE: OriginalEquipment PRODUCTDESIGNATION: SmartLabelPrinter BRANDNAME: NIIMBOT MODELNAME: NIIMBOTB4Pro APPLICANT: WuhanJingchenIntelligentIdentificationTechnologyCo.,Ltd. DATEOFISSUE: May25,2026 STANDARD(S): IEEEStd.1528:2013 FCC47CFRPart2§2.1093 IEEEStdC95.1™-2019 REPORTVERSION: V1.0 AttestationofGlobalCompliance(Shenzhen)Co.,Ltd. ReportNo.:AGC07434251208FH01 Page 2 of 73 ReportReviseRecord ReportVersionReviseTimeIssuedDateValidVersionNotes V1.0/May25,2026ValidInitialRelease ReportNo.:AGC07434251208FH01 Page 3 of 73 TestReport ApplicantNameWuhanJingchenIntelligentIdentificationTechnologyCo.,Ltd. ApplicantAddress No.5,CreativeWorkshop,CreativeWorld,YezhihuWestRoad,Hongshan District,Wuhan,China ManufacturerNameWuhanJingchenIntelligentIdentificationTechnologyCo.,Ltd. ManufacturerAddress No.5,CreativeWorkshop,CreativeWorld,YezhihuWestRoad,Hongshan District,Wuhan,China FactoryName DongxihubranchofWuhanJingchenIntelligentIdentificationTechnologyCo., Ltd. FactoryAddress No.20,XinchengeighteenRoad,ChangqingStreet,DongxihuDistrict,Wuhan, HubeiProvince,China ProductDesignationSmartLabelPrinter BrandNameNIIMBOT ModelNameNIIMBOTB4Pro SreiesmodelnameN/A DifferentDescriptionN/A EUTVoltageDC7.4Vbybattery ApplicableStandard IEEEStd.1528:2013 FCC47CFRPart2§2.1093 IEEEStdC95.1™-2019 Dateofreceiptoftestitem Feb.11,2026 TestDateApr.24,2026toApr.30,2026 ReportTemplateAGCRT-US-5G/SAR(2021-04-20) Note:Theresultsoftestinginthisreportapplytotheproduct/systemwhichwastestedonly. PreparedBy CoolCheng(ProjectEngineer)May25,2026 ReviewedBy JackGui(Reviewer)May25,2026 ApprovedBy AngelaLi(AuthorizedOfficer)May25,2026 ReportNo.:AGC07434251208FH01 Page 4 of 73 TABLEOFCONTENTS 1.SUMMARYOFMAXIMUMSARVALUE...........................................................................................................5 2.GENERALINFORMATION................................................................................................................................6 2.1.EUTDESCRIPTION..........................................................................................................................................6 3.SARMEASUREMENTSYSTEM.........................................................................................................................8 3.1.THESATIMOSYSTEMUSEDFORPERFORMINGCOMPLIANCETESTSCONSISTSOFFOLLOWINGITEMS..................8 3.2.COMOSARE-FIELDPROBE...........................................................................................................................9 3.3.ROBOT...........................................................................................................................................................9 3.4.VIDEOPOSITIONINGSYSTEM.........................................................................................................................10 3.5.DEVICEHOLDER............................................................................................................................................10 3.6.SAMTWINPHANTOM....................................................................................................................................11 4.SARMEASUREMENTPROCEDURE...............................................................................................................12 4.1.SPECIFICABSORPTIONRATE(SAR)...............................................................................................................12 4.2.SARMEASUREMENTPROCEDURE.................................................................................................................13 4.3.RFEXPOSURECONDITIONS..........................................................................................................................15 5.TISSUESIMULATINGLIQUID..........................................................................................................................16 5.1.THECOMPOSITIONOFTHETISSUESIMULATINGLIQUID.....................................................................................16 5.2.TISSUEDIELECTRICPARAMETERSFORHEADANDBODYPHANTOMS...............................................................16 5.3.TISSUECALIBRATIONRESULT.........................................................................................................................17 6.SARSYSTEMCHECKPROCEDURE.............................................................................................................19 6.1.SARSYSTEMCHECKPROCEDURES..............................................................................................................19 6.2.SARSYSTEMCHECK....................................................................................................................................20 7.EUTTESTPOSITION.......................................................................................................................................22 7.1.BODYWORNPOSITION..................................................................................................................................22 8.SAREXPOSURELIMITS.................................................................................................................................23 9.TESTFACILITY................................................................................................................................................24 10.TESTEQUIPMENTLIST................................................................................................................................25 11.MEASUREMENTUNCERTAINTY..................................................................................................................26 12.CONDUCTEDPOWERMEASUREMENT......................................................................................................29 13.TESTRESULTS.............................................................................................................................................31 13.1.SARTESTRESULTS…

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CALIBRATION DATA PROBE CALIBRATION DATA DIPOLE CALIBRATION DATA

Page 1 of 28 FCC Test Report Report No.: AGC07434251208FR03 FCC ID : 2ARXB-B4PRO APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Smart Label Printer BRAND NAME : NIIMBOT MODEL NAME : NIIMBOT B4 Pro APPLICANT : Wuhan Jingchen Intelligent Identification Technology Co., Ltd. DATE OF ISSUE : May 25, 2026 STANDARD(S) : FCC Part 15 Subpart E §15.407 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC07434251208FR03 Page 2 of 28 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / May 25, 2026 Valid Initial Release Report No.: AGC07434251208FR03 Page 3 of 28 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 2.2 DFS Band Carrier Frequencies Operation ................................................................................................ 6 2.3 Related Submittal(S) / Grant (S) ............................................................................................................... 7 2.4 Test Methodology ...................................................................................................................................... 7 2.5 Description of Test Mode ........................................................................................................................... 7 2.6 Summary of Test Result ............................................................................................................................ 7 2.7 Antenna Requirement................................................................................................................................ 8 3. Test Environment ............................................................................................................................................ 9 3.1 Address of The Test Laboratory ................................................................................................................ 9 3.2 Test Facility ................................................................................................................................................ 9 3.3 Environmental Conditions ....................................................................................................................... 10 3.4 Measurement Uncertainty ....................................................................................................................... 10 3.5 List of Equipment Used ........................................................................................................................... 10 4. DFS Detection Thresholds and Radar Test Waveforms ............................................................................ 12 4.1 Provisions Applicable .............................................................................................................................. 12 4.2 DFS Devices Requirements .................................................................................................................... 13 4.3 DFS Detection Threshold Values ............................................................................................................ 14 4.4 Parameters of DFS Test Signals ............................................................................................................. 15 4.5 Measurement Setup (Block Diagram of Configuration) .......................................................................... 19 4.6 Measurement Procedure ......................................................................................................................... 20 4.7 Radar Waveform Calibration Plot ............................................................................................................ 22 4.8 Measurement Results ............................................................................................................................. 24 Appendix I: Photographs of Test Setup .......................................................................................................... 27 Appendix II: Photographs of Test EUT ........................................................................................................... 27 Report No.: AGC07434251208FR03 Page 4 of 28 1. General Information Applicant Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Address No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China Manufacturer Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Address No. 5, Creative Workshop, Creative World, Yezhihu West Road, Hongshan District, Wuhan, China Factory Dongxihu branch of Wuhan Jingchen Intelligent Identification Technology Co., Ltd. Address No. 20, Xincheng eighteen Road, Changqing Street, Dongxihu District, Wuhan, Hubei Province, China Product Designation Smart Label Printer Brand Name NIIMBOT Test Model NIIMBOT B4 Pro Series Model(s) N/A Difference Description N/A Date of receipt of test item Dec. 13, 2025 Date of Test Dec. 13, 2025~May 22, 2026 Deviation from Standard No any deviation from the test method Condition of Test Sample Normal Sample Number 251230233 Test Result Pass Test Report Form No AGCER-FCC-DFS-V1 Note: The test results of this report relate only to the tested sample identified in this report. Prepared By Cool Cheng (Project Engineer) May 25, 2026 Reviewed By Jack Gui (Reviewer) May 25, 2026 Approved By Angela Li (Authorized Officer) May 25, 2026 Report No.: AGC07434251208FR03 Page 5 of 28 2. Product Information 2.1 Product Technical Description Frequency Range U-NII 2A:5250MHz~5350MHz …

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SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -1- SPECIFICATIONFORAPPROVAL CUSTOMER：ShenzhenAi-ThinkerTechnologyCo.,Ltd CUSPARTNO:BW20-12F PARTNAME:2.4G/5GWLANAntenna Edition：V1.0 EditorLvXihuan2024/08/07 VerifierGuanNing2024/08/07 ApproverXuFuqiang2024/08/07 SHENZHENB&TTECHNOLOGYCo.,Ltd ZHONGSHANB&TTECHNOLOGYCo.,Ltd Address:3-4/F,BuildingA,DongfangIndustrialPark,NanlangTown, ZhongshanCity,GuangdongProvince,China SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -2- Directory 1.AntennaDimension.................................................................................................-3- 2.Performanceparameter...........................................................................................-3- 3. VSWR....................................................................................................................-4- 4.Passivetestdata:......................................................................................................-4- SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -3- Productspecification 1.AntennaDimension 2.Performanceparameter Name2.4G/5GWLANAntenna ModelTypePCBPrintAntenna ELECTRICALSPECTFICATIONS FrenquencyRange2400-2500MHz/5150-5850MHz BandWidth 2.4G100MHz 5G700MHz Impedance50Ω VSWR<2.5 MaxGain 2.4G2.33dBi 5G5.33dBi PolarizationVertical/Horizontal RadiationOmnidirectional Power<1W SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -4- 3. VSWR 4.Passivetestdata: Frequency(MHz)24002410242024302440245024602470248024902500 Gain(dBi)1.171.321.751.972.102.292.332.332.292.262.23 Efficiency(%)45.0544.7647.3748.3149.4451.7952.2251.9050.8049.7948.01 Frequency(MHz)51505250535054505550565057505850/// Gain(dBi)2.912.023.002.292.333.793.465.33/// Efficiency(%)66.6747.0361.9960.8054.0157.8948.3763.91/// SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -5- 5.Radiationpattern (1)2400MHz 1.17dBi (2)2450MHz SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -6- (3)2500MHz (4)5150MHz 2.29dBi 2.23dBi SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -7- (5)5450MHz 2.91dBi SHENZHENB&TTECHNOLOGYCo.,LtdZHONGSHANB&TTECHNOLOGYCo.,Ltd -8- (6)5850MHz 2.29dBi 5.33dBi

Page 1 of 158 FCC Test Report Report No.: AGC07434251208FR02 FCC ID : 2ARXB-B4PRO APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Smart Label Printer BRAND NAME : NIIMBOT MODEL NAME : NIIMBOT B4 Pro APPLICANT : Wuhan Jingchen Intelligent Identification Technology Co., Ltd. DATE OF ISSUE : May 25, 2026 STANDARD(S) : FCC Part 15 Subpart E §15.407 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC07434251208FR02 Page 2 of 158 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / May 25, 2026 Valid Initial Release Report No.: AGC07434251208FR02 Page 3 of 158 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ................................................................................................................... 6 2.2 Table of Carrier Frequency ........................................................................................................................ 7 2.3 IEEE 802.11n Modulation Scheme ........................................................................................................... 9 2.4 Related Submittal(S) / Grant (S) ............................................................................................................. 10 2.5 Test Methodology .................................................................................................................................... 10 2.6 Special Accessories ................................................................................................................................ 10 2.7 Equipment Modifications ......................................................................................................................... 10 2.8 Antenna Requirement ............................................................................................................................. 10 2.9 Description of Test Software ................................................................................................................... 11 3. Test Environment .......................................................................................................................................... 13 3.1 Address of The Test Laboratory .............................................................................................................. 13 3.2 Test Facility .............................................................................................................................................. 13 3.3 Environmental Conditions ....................................................................................................................... 14 3.4 Measurement Uncertainty ....................................................................................................................... 14 3.5 List of Equipment Used ........................................................................................................................... 15 4.System Test Configuration ............................................................................................................................ 17 4.1 EUT Configuration ................................................................................................................................... 17 4.2 EUT Exercise ........................................................................................................................................... 17 4.3 Configuration of Tested System .............................................................................................................. 17 4.4 Equipment Used in Tested System ......................................................................................................... 18 4.5 Summary of Test Results ........................................................................................................................ 19 5. Description of Test Modes ........................................................................................................................... 20 6. Duty Cycle Measurement ............................................................................................................................. 23 7. RF Output Power Measurement .................................................................................................................. 26 7.1 Provisions Applicable .............................................................................................................................. 26 7.2 Measurement Procedure ......................................................................................................................... 26 7.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 26 7.4 Measurement Result ............................................................................................................................... 27 8. 6dB&26dB Bandwidth Measurement .......................................................................................................... 29 8.1 Provisions Applicable .............................................................................................................................. 29 8.2 Measurement Procedure ......................................................................................................................... 29 8.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 29 8.4 Measurement Results ............................................................................................................................…

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Report No.: AGC07434251208FR02 Page 47 of 158 Test_Graph_802.11n20_Chain A_5825_MCS0_OBW Test_Graph_802.11n40_Chain A_5755_MCS0_OBW Report No.: AGC07434251208FR02 Page 48 of 158 Test_Graph_802.11n40_Chain A_5795_MCS0_OBW Test Graphs of DTS Bandwidth for band 5.725-5.85 GHz Test_Graph_802.11a_Chain A_5745_6Mbps_DTSBW Report No…

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