2ASRB-D421RLabel Printer

TCB CALL página 1 File FCC ID: 2ASRB-D421R 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://opencorporates.com/companies/us_co/20248329243 In google: TCB CALL página 2 TCB CALL página 3 TCB CALL página 4 TCB CALL página 5 TCB CALL página 6 TCB CALL página 7 TCB CALL página 8 TCB CALL página 9 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "C5266091_X23_Ed1_US_Agent_Letter" 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 "C5266091_X23_Ed1_US_Agent_Letter" >

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: LOBOS IOWA INC FRN: 0036413961 Contact Name: Harley Li Address: 4623 Bittercreek Dr Colorado Springs CO 80922 United States Telephone No: +1 818 818 0538 Email: [email protected] Applicant: Company name: Zhuhai Quin Technology Co., Ltd. FRN: 0028328375 Product Description: Label Printer Grantee code: 2ASRB FCC ID: 2ASRB-D421R Contact Name: Chloe Xu Address: 1ST FLOOR, BUILDING 1, NO. 456 CHUANGYUAN ROAD, XIANGZHOU DISTRICT, ZHUHAI CITY Telephone No: 0756-8699759 Email: [email protected] [Zhuhai Quin Technology Co., Ltd.] certifies that, as of the date of this filing of the application with the TCB, [LOBOS IOWA INC] is our designated US agent for service of process for the above referenced FCC ID. [Zhuhai Quin Technology Co., Ltd.] 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 equipment. [LOBOS IOWA INC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 05.06.2026 Applicant’s Name: Chloe Xu US Agent’s Name: Harley Li Title: product manager Title: Manager Signature Signature

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Zhuhai Quin Technology Co., Ltd. Grantee code: 2ASRB FCC ID: 2ASRB-D421R FRN: 0028328375 Contact Name: Chloe Xu Address: 1ST FLOOR, BUILDING 1, NO. 456 CHUANGYUAN ROAD, XIANGZHOU DISTRICT, ZHUHAI CITY Telephone No: 0756-8699759 Fax No: 0756-2128969 Email: [email protected] i. [Zhuhai Quin Technology Co., Ltd.] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. The applicant must sign this certification. ii. [Zhuhai Quin Technology Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. Zhuhai Quin Technology Co., Ltd. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Date: 05.06.2026 Applicant’s Name: Chloe Xu Title: product manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Zhuhai Quin Technology Co., Ltd. Code 00018768 Ed. 2 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 Label Printer Company name Zhuhai Quin Technology Co., Ltd. Grantee code 2ASRB FCC ID 2ASRB-D421R FRN 0028328375 Contact name Chloe Xu Address 1ST FLOOR, BUILDING 1, NO. 456 CHUANGYUAN ROAD, XIANGZHOU DISTRICT, ZHUHAI CITY Telephone number 0756-8699759 E-mail [email protected] Chipset/module information AC7014F5, AT32F421F4P7 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 3 # General Requirements (For Linux system) Yes / No or N/A Comments 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 4 Item 3. Connectivity Capabilities: # 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: Chloe Xu Date: 5/6/2026 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

Zhuhai Quin Technology Co., Ltd. Product Similarity Declaration Product name: Label Printer Model name: D421R, D423BT, D425BT, D426BT, D427BT, D428BT, D429BT, D423D, D425D, D426D, D427D, D428D, D429D, D420Air, D423Air, D425Air, D426Air, D427Air, D428Air, D429Air, A641M, A64M, A642M, A643M, A645M, A646M, A647M, A649M, A64MD, A641MD, A642MD, A643MD, A645MD, A646MD, A647MD, A649MD, A64Plus, A641Plus, A642Plus, A643Plus, A645Plus, A646Plus, A647Plus, A648Plus, A649Plus, A64Pro, A641Pro, A642Pro, A643Pro, A645Pro, A646Pro, A647Pro, A648Pro, A649Pro, D422S, D6, D6 Pro, D423 Pro, D425 Pro, D426 Pro, D427 Pro, D428 Pro, D429 Pro, D423H, D425H, D426H, D427H, D428H, D429H, D423H Pro, D425H Pro, D426H Pro, D427H Pro, D428H Pro, D429H Pro, D423D Pro, D425D Pro, D426D Pro, D427D Pro, D428D Pro, D429D Pro, D423R, D425R, D426R, D427R, D428R, D429R, D421R Pro, D421 Pro, D421BT, D421D, D421Air, D421H, D421WF, D423WF, D425WF, D426WF, D427W, D428WF, D429WF, PM-241H, D450 Pro, D450H FCC ID: 2ASRB-D421R We (Zhuhai Quin Technology Co., Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model name and color. Signature: Name: Chloe Xu Title: product manager Date: 5/6/2026

C5266091_X10_Ed.2 1/1 Zhuhai Quin Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 5/6/2026 Subject: Request for Confidentiality FCC ID: 2ASRB-D421R To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Chloe Xu Title: product manager

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Zhuhai Quin Technology Co., Ltd. Address: 1ST FLOOR, BUILDING 1, NO. 456 CHUANGYUAN ROAD, XIANGZHOU DISTRICT, ZHUHAI CITY Product Name: Label Printer Model Number: D421R, D423BT, D425BT, D426BT, D427BT, D428BT, D429BT, D423D, D425D, D426D, D427D, D428D, D429D, D420Air, D423Air, D425Air, D426Air, D427Air, D428Air, D429Air, A641M, A64M, A642M, A643M, A645M, A646M, A647M, A649M, A64MD, A641MD, A642MD, A643MD, A645MD, A646MD, A647MD, A649MD, A64Plus, A641Plus, A642Plus, A643Plus, A645Plus, A646Plus, A647Plus, A648Plus, A649Plus, A64Pro, A641Pro, A642Pro, A643Pro, A645Pro, A646Pro, A647Pro, A648Pro, A649Pro, D422S, D6, D6 Pro, D423 Pro, D425 Pro, D426 Pro, D427 Pro, D428 Pro, D429 Pro, D423H, D425H, D426H, D427H, D428H, D429H, D423H Pro, D425H Pro, D426H Pro, D427H Pro, D428H Pro, D429H Pro, D423D Pro, D425D Pro, D426D Pro, D427D Pro, D428D Pro, D429D Pro, D423R, D425R, D426R, D427R, D428R, D429R, D421R Pro, D421 Pro, D421BT, D421D, D421Air, D421H, D421WF, D423WF, D425WF, D426WF, D427W, D428WF, D429WF, PM-241H, D450 Pro, D450H FCC Identifier: 2ASRB-D421R 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: Chloe Xu Date: 5/6/2026 Title: product manager Signature of applicant:

Page1of4ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] PhotographsoftheEUT(ExternalPhotos) Model:D421R Page2of4ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page3of4ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page4of4ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected]

Label Location

Page1of6ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] PhotographsoftheEUT(InternalPhotos) Model:D421R Page2of6ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page3of6ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page4of6ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page5of6ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page6of6ReportNo.:MTi260206010-0202 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected]

Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 1 of 8 RFEXPOSURE TestReport ReportNo.:MTi260206010-0202E4 Dateofissue:2026-05-18 Applicant:ZhuhaiQuinTechnologyCo.,Ltd. Product:LabelPrinter Model(s):D421R Seriesmodel:PleaserefertotheSeriesmodelremark FCCID:2ASRB-D421R ShenzhenMicrotestCo.,Ltd. TESTREPORT ReportNo.:MTi260206010-0202E4 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 2 of 8 SeriesmodelRemark: D423BT,D425BT,D426BT,D427BT,D428BT,D429BT,D423D,D425D,D426D, D427D,D428D,D429D,D420Air,D423Air,D425Air,D426Air,D427Air,D428Air, D429Air,A641M,A64M,A642M,A643M,A645M,A646M,A647M,A649M,A64MD, A641MD,A642MD,A643MD,A645MD,A646MD,A647MD,A649MD,A64Plus, A641Plus,A642Plus,A643Plus,A645Plus,A646Plus,A647Plus,A648Plus,A649Plus, A64Pro,A641Pro,A642Pro,A643Pro,A645Pro,A646Pro,A647Pro,A648Pro,A649Pro, D422S,D6,D6Pro,D423Pro,D425Pro,D426Pro,D427Pro,D428Pro,D429Pro, D423H,D425H,D426H,D427H,D428H,D429H,D423HPro,D425HPro,D426HPro, D427HPro,D428HPro,D429HPro,D423DPro,D425DPro,D426DPro,D427DPro, D428DPro,D429DPro,D423R,D425R,D426R,D427R,D428R,D429R,D421RPro, D421Pro,D421BT,D421D,D421Air,D421H,D421WF,D423WF,D425WF,D426WF, D427W,D428WF,D429WF,PM-241H,D450Pro,D450H TESTREPORT ReportNo.:MTi260206010-0202E4 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 3 of 8 Tableofcontents 1RFEXPOSUREEVALUATION...............................................................................................5 2MeasurementResult..............................................................................................................6 TESTREPORT ReportNo.:MTi260206010-0202E4 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 4 of 8 TestResultCertification Applicant ZhuhaiQuinTechnologyCo.,Ltd. ApplicantAddress 1STFLOOR,BUILDING1,NO.456CHUANGYUANROAD,XIANGZHOU DISTRICT,ZHUHAICITY Manufacturer ZhuhaiQuinTechnologyCo.,Ltd. Manufacturer Address 1STFLOOR,BUILDING1,NO.456CHUANGYUANROAD,XIANGZHOU DISTRICT,ZHUHAICITY Productdescription ProductnameLabelPrinter TrademarkN/A ModelnameD421R SeriesModel(s)PleaserefertotheSeriesmodelremark Standards47CFRPart2.1091 TestmethodKDB447498D01v06 TestingInformation Dateoftest2026-03-06to2026-05-15 TestResultPass Preparedby: LetterLan Reviewedby:DavidLee Approvedby:LewisLian TESTREPORT ReportNo.:MTi260206010-0202E4 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 5 of 8 1RFEXPOSUREEVALUATION AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedtoevaluatethe environmentimpactofhumanexposuretoradiofrequency(RF)Radiationasspecifiedin §1.1307(b) LimitsforMaximumPermissibleExposure(MPE) MPECalculationMethod Friistransmissionformula:Pd=(Pout*G)\(4*pi*R 2 ) Where Pd=PowerdensityinmW/cm 2 Pout=outputpowertoantennainmW G=Numericgainoftheantennarelativetoisotropicantenna Pi=3.1415926 R=distancebetweenobservationpointandcenteroftheradiatorincm(20cm) PdthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandtotalpower inputtotheantenna,throughthecalculation,wewillknowthedistancewheretheMPElimitis reached. TESTREPORT ReportNo.:MTi260206010-0202E4 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 6 of 8 2MeasurementResult BT&BLE: OperationFrequency:2402-2480MHz, Powerdensitylimited:1mW/cm2 AntennaType:PCBAntenna Antennagain:-0.58dBi R=20cm mW=10^(dBm/10) AntennagainNumeric=10^(dBi/10)=10^(-0.58/10)=0.87 BT: Channel Freq. (MHz) modulation conducted power Tune- up power (dBm) MaxAntenna Evaluation result Power density Limits (dBm) tune-uppowerGain (mW/cm 2 )(mW/cm 2 ) (dBm)(mW)(dBi)Numeric 2402 GFSK -0.190±111.259 -0.580.870.0002 1 2441-0.040±111.259 -0.580.870.0002 1 24801.001±121.585 -0.580.870.0003 1 2402 π/4-DQPSK 0.630±111.259 -0.580.870.0002 1 24410.770±111.259 -0.580.870.0002 1 24801.801±121.585 -0.580.870.0003 1 BLE: Channel Freq. (MHz) modulation conducted power Tune- up power (dBm) MaxAntenna Evaluation result Power density Limits (dBm) tune-uppowerGain (mW/cm 2 )(mW/cm 2 ) (dBm)(mW)(dBi)Numeric 2402 GFSK-1M -0.210±1 1 1.259 -0.580.870.0002 1 24400.300±1 1 1.259 -0.580.870.0002 1 24800.920±1 1 1.259 -0.580.870.0002 1 2402 GFSK-2M -0.180±1 1 1.259 -0.580.870.0002 1 24400.410±1 1 1.259 -0.580.870.0002 1 24800.930±1 1 1.259 -0.580.870.0002 1 TESTREPORT ReportNo.:MTi260206010-0202E4 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE013 Ver./Rev.：A1 Page 7 of 8 RFID: Transmit Frequency (MHz) Mode H-field Level@3m (dBuV/m) Exemptedpower Result (V/m) Exemptedpower limit((V/m) 13.56ASK44.82 0.0019 60.76 Conclusion: BandModeResultcalculation 1gSAR testexclusion threshold Fractionoflimit (%) 2402~2480MHzBLE0.0…

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Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 1 of 30 TestReport ReportNo.:MTi260206010-0202E3 Dateofissue:2026-05-18 Applicant:ZhuhaiQuinTechnologyCo.,Ltd. Product:LabelPrinter Model(s):D421R Seriesmodel:PleaserefertotheSeriesmodelremark FCCID:2ASRB-D421R ShenzhenMicrotestCo.,Ltd. TESTREPORT ReportNo.:MTi260206010-0202E3 Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 2 of 30 SeriesmodelRemark: D423BT,D425BT,D426BT,D427BT,D428BT,D429BT,D423D,D425D,D426D, D427D,D428D,D429D,D420Air,D423Air,D425Air,D426Air,D427Air,D428Air, D429Air,A641M,A64M,A642M,A643M,A645M,A646M,A647M,A649M,A64MD, A641MD,A642MD,A643MD,A645MD,A646MD,A647MD,A649MD,A64Plus, A641Plus,A642Plus,A643Plus,A645Plus,A646Plus,A647Plus,A648Plus,A649Plus, A64Pro,A641Pro,A642Pro,A643Pro,A645Pro,A646Pro,A647Pro,A648Pro,A649Pro, D422S,D6,D6Pro,D423Pro,D425Pro,D426Pro,D427Pro,D428Pro,D429Pro, D423H,D425H,D426H,D427H,D428H,D429H,D423HPro,D425HPro,D426HPro, D427HPro,D428HPro,D429HPro,D423DPro,D425DPro,D426DPro,D427DPro, D428DPro,D429DPro,D423R,D425R,D426R,D427R,D428R,D429R,D421RPro, D421Pro,D421BT,D421D,D421Air,D421H,D421WF,D423WF,D425WF,D426WF, D427W,D428WF,D429WF,PM-241H,D450Pro,D450H TESTREPORT ReportNo.:MTi260206010-0202E3 Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 3 of 30 Tableofcontents 1GeneralDescription.......................................................................................................................5 1.1DescriptionoftheEUT.........................................................................................................5 1.2Descriptionoftestmodes....................................................................................................5 1.3EnvironmentalConditions....................................................................................................6 1.4Descriptionofsupportunits.................................................................................................6 1.5Measurementuncertainty....................................................................................................6 2SummaryofTestResult................................................................................................................7 3TestFacilitiesandaccreditations................................................................................................8 3.1Testlaboratory.....................................................................................................................8 4Listoftestequipment....................................................................................................................9 5EvaluationResults(Evaluation).................................................................................................11 5.1Antennarequirement.........................................................................................................11 6RadioSpectrumMatterTestResults(RF).................................................................................11 6.1ConductedEmissionatACpowerline..............................................................................11 6.220dBBandwidth.................................................................................................................14 6.3FrequencyTolerance.........................................................................................................17 6.4FieldStrengthofTheFundamentalSignal.......................................................................19 6.5Emissionsinfrequencybands(below30MHz).................................................................21 6.6Emissionsinfrequencybands(30M-1GHz).....................................................................24 Photographsofthetestsetup...........................................................................................................28 PhotographsoftheEUT.....................................................................................................................29 TESTREPORT ReportNo.:MTi260206010-0202E3 Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 4 of 30 TestResultCertification ApplicantZhuhaiQuinTechnologyCo.,Ltd. ApplicantAddress 1STFLOOR,BUILDING1,NO.456CHUANGYUANROAD,XIANGZHOU DISTRICT,ZHUHAICITY ManufacturerZhuhaiQuinTechnologyCo.,Ltd. Manufacturer Address 1STFLOOR,BUILDING1,NO.456CHUANGYUANROAD,XIANGZHOU DISTRICT,ZHUHAICITY Productdescription ProductnameLabelPrinter TrademarkN/A ModelnameD421R SeriesModel(s)PleaserefertotheSeriesmodelremark Standards47CFRPart15.225 TestMethodANSIC63.10-2020+Cor1-2023 TestingInformation Dateoftest2026-04-21to2026-05-15 TestresultPass Preparedby:LetterLan Reviewedby:DavidLee Approvedby:LewisLian TESTREPORT ReportNo.:MTi260206010-0202E3 Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 5 of 30 1GeneralDescription 1.1DescriptionoftheEUT Productname:LabelPrinter Modelname:D421R SeriesModel(s):PleaserefertotheSeriesmodelremark Modeldifference: Allthemodelsarethesamecircuitand…

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第一页/Page1 电话： （Phone） 联系人： （Contacts） 第一页/Page1 第二页/Page2 发行日期/date of issue：文件编号/document number： 客户/Customer： 制订部门/Department Establish 品名/Part Name：料号/Part NO： 内容说明/Content Description： 版次/Edition 修订人/Revision A 日期/Date 第二页/Page2 地址（Add）： □新承认/New Recognition □设变变更/Design Change □版本变更/Design Change 修订内容/revision content 日期(Model No):2026.05.11 批准： 朱姗芝 拟制: 朱燕燕 （Approved By）:Zhu shan zi (Checked By）:Zhu yan yan 客户承认/Customer Confirmation 批准 承认 （Approved By） (Checked By） 承认履历表/Employment Application Form 样品承认书 SPECIFICATION FOR APPROVAL 客户(Customer): 珠海趣印 /Zhuhai Quyin 品名(Part name):Q659_RF_260318 FPC 料号(Part No):30301201000 机种(Model No): 深圳市路佑发电子有限公司 Shenzhen Luyoufa Electronics Co., Ltd. 18127033270陈总/Mr.Chen 深圳市宝安区沙井街道环镇路衙边第一工业区C4栋1楼 Building C4, Yabian First Industrial…

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