2APNR-GR531NAIndustrial Router

Gosuncn RichLink Technology Co., Ltd. GR531-NA LTE Cat.4 Industrial Router GR531-NA is a compact Industrial Cellular Router that provides reliable connectivity in rigorous conditions common in industries like smart meter, monitoring, and retail. This model is equipped with 4G LTE, WLAN, and two Ethernet ports, making it ideal for quickly setting up primary and backup connectivity with remote management capabilities. Multiple Network Protocols WLAN/WAN/Cellular Auto-failover Compact Size Richlink Cloud FOTA/Remote Configuration Wide Temperature PoE VPN for Data Security Dual SIM Dual Image Backup WeChat Official Account Gosuncn RichLink Technology Co., Ltd. Application Scenarios EV Charging Vending Machine Video SurveillanceSmart Metering GR531-NA Industrial Router can be widely used in smart metering, video surveillance, vending machine and EV charging scenarios. WeChat Official Account Gosuncn RichLink Technology Co., Ltd. Main Features Dual SIM Backup1×WAN/LAN+1×LAN WLAN 2.4G+5GGNSS(optional) Physical Specification Dimension*82.4×78.0 ×28.3mm WeightAbout 168g Casing MaterialAluminum housing Mounting Bracket/DIN Operating Environment Operation Temperature-30°C ~ +70°C Storage Temperature-40°C ~ +85°C Humidity5%~95% RH Waterproof and dustproofIP30 Anti-vibration ratingIEC 60068-2-6：2007 Mobile Modem LTE Cat.4, LTE: Max. DL 150Mbps / UL 50Mbps; HSPA+: Max. DL 42Mbps / UL 5.76Mbps Status Signal strength (RSSI), SINR, RSRP, RSRQ, EC/IO, RSCP, Bytes sent/received, connected band, IMSI, ICCID SIM ManagementSIM select, SIM lock APNAutoAPN NetworkNetwork select, Band lock, Used band status display 78.0mm 28.3mm 82.4mm Ethernet WAN/LAN WAN/LAN1, 10/100 Mbps, compliance with IEEE 802.3, IEEE 802.3u standards, supports auto MDI/MDIX LAN LAN2, 10/100 Mbps, compliance with IEEE 802.3, IEEE 802.3u standards, supports auto MDI/MDIX Notes: Dimension*: Housing measurements are presented without antenna connectors, screws and bracket; WeChat Official Account Gosuncn RichLink Technology Co., Ltd. WLAN Wireless ModeIEEE 802.11 a/b/g/n/ac, Access Point (AP), Station (STA) WLAN Security WPA_TKIP, WPA_AES, WPA_TKIPAES, WPA2_TKIP, WPA2_AES, WPA2_TKIPAES, WPAWPA2_TKIP, WPAWPA2_AES, WPAWPA2_TKIPAES, WPA3_AES, WPA2WPA3_AES, WPAWPA2WPA3_AES WPSPIN code, PBC WLAN UsersUp to 10 simultaneous connections Serial Type1×RS-232 + 1 × RS-485 serial port Signal DefinitionRX, TX, GND (RS-232) , A, B BaudrateRS-232 (300-115200bps), RS-485 (300-115200bps) Physical Interface EthernetRJ45 port×2, 10M/100M I/O1×Digital Input, 1×Digital Output on 4-pin power connector Status LEDPower, Signal, Net state, LAN1, LAN2, WLAN SIM2×SIM slot (Mini SIM – 2FF), 1.8 V/3 V; 1×eSIM QFN 5×6 (optional) AntennaSMA Female: 2 for LTE ,1 for WLAN, 1 for GNSS Power Supply4-pin industrial DC power socket Serial2×3-pin 3.5 mm socket ResetFactory reset button/WPS Power Connector4-pin industrial DC power socket Input Voltage Range9~ 30 VDC, reverse polarity protection, surge protection >33 VDC 10us max PoE (Passive) Passive Alternative B PoE. Possibility to power up through LAN1 port , not compatible with IEEE802.3af, 802.3at and 802.3bt standards. Power Consumption*Idle: <2 W, Max: <10 W Industrial Protocols WAN Failover Automatic switching to available backup connection, WLAN, Mobile, Ethernet, each of which can be used as an automatic Failover Network Protocols PPP, TCP, UDP, DHCP, DHCP RELAY, ICMP, NAT, HTTP, HTTPs, DNS, ARP, NTP, SSH, DDNS, etc. RoutingStatic Routing, Policy routing, RIP, OSPF and BGP, etc. FirewallNAT, DMZ, Port Forword, IP/MAC Filter, Access Control List VPNPPTP/L2TP/GRE/IPSec Remote ManagementHTTP, SSH, SNMP V2/V3, RICHLINK Cloud WeChat Official Account Gosuncn RichLink Technology Co., Ltd. Appearance WeChat Official Account Gosuncn RichLink Technology Co., Ltd. What’s in the Box? GR531 Industrial Router ×1 LTE Antenna (SMA Male) ×2 Ethernet Cable(1M) ×118W PSU* (Power Supply Unit) ×1 QSG×1 WeChat Official Account Gosuncn RichLink Technology Co., Ltd. Optional Accessories WLAN Antenna(1.5M, RP-SMA) GNSS Antenna(1M, SMA Male) 4 Pin to DC Barrel Socket Adapter(0.1M) Power Cable with 4-way Screw Terminal(2M,used for DI/DO) DIN Rail Kit 2*3 PIN Connecter LTE Mobile Magnetic SMA Antenna (1.5/3M, SMA Male) Single Port POE Injector， 50V/0.6A WeChat Official Account Gosuncn RichLink Technology Co., Ltd. FCC Regulatory This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This devicemay not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference toradio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. Please take attention that changes or modification not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. FCC RF Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.…

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[GosuncnTechnologyGroupCo., Ltd. ] [6F, 2819 KaiChuangBlvd., ScienceTown,HuangpuDistrict,GuangzhouCity, Guangdong, China.510530] Date: [2026/3/30] FederalCommunicationsCommission Authorizationand EvaluationDivision 7435 OaklandMills Road Columbia,MD 21046 FCC ID: [2APNR-GR531NA] FRN: [0027463983] US Agent – Attestation Statement / Part 2.911(d)(7) [Gosuncn Technology Group Co., Ltd. ] certifies, that as of [03/30/2026], we have designated FCC US Agent, LLC to accept service of process on our behalf for FCC ID: [2APNR-GR531NA]. [GosuncnTechnologyGroupCo., Ltd. ], acceptsto maintainan agent of serviceof processin the UnitedStatesfor no less than one year after either the granteehas permanentlyterminatedall marketingand importationof the applicableequipmentwithin the U.S., or the conclusionof any Commission-relatedadministrativeor judicialproceedinginvolvingthe equipment,whicheveris later. FCC US Agent,LLC, acceptsas of the date of the filing of this application,the obligationof being the designatedagent for the purposeof acceptingserviceof processon behalfof [Gosuncn TechnologyGroupCo., Ltd. ] for FCC ID: [2APNR-GR531NA]. DesignatedAgentInformation: CompanyName:FCC US Agent,LLC FRN: 0033402884 Address:3722 IllinoisAvenue,Saint Charles,IL, 60174,USA ContactPerson:Tim Payne Phone:708-571-3148 Email:[email protected] Sincerely, Company:GosuncnTechnologyGroupCo., Ltd. DesignatedAgent:FCC US Agent,LLC CompanyRepresentative:XiaotingChenDesignatedAgent Representative:Tim Payne Signature:Signature:

GosuncnTechnologyGroupCo.,Ltd. AuthorizationforReuseofModuleTestData DATE:2026/3/27 FederalCommunicationsCommission, Authorization&EvaluationDivision, 7435OaklandMillsRoad, Columbia,MD21046 We,theundersigned,herebyauthorizeGosuncnTechnologyGroupCo.,Ltd. toreusethespecifiedmoduletestdataintheirapplicationtoFederal CommunicationsCommission(FCC)fortheequipmentidentifiedbytheFCC ID:2APNR-GL531G. Reusedmoduleinformation: Modulemanufacturer:GosuncnTechnologyGroupCo.,Ltd. FCCID:2APNR-GM500U1G Productname:PCSLicensedTransmitter Hardwareversion:GM500-U1GA.H01 Firmwareversion:GM500U1GV1.0B01 ThisauthorizationisgrantedtoGosuncnTechnologyGroupCo.,Ltd.toreusethe abovemoduletestdataforthefollowingequipmentmodelincompliancewiththe regulatoryrequirementsofFCC: Applicant:GosuncnTechnologyGroupCo.,Ltd. Certificationnumber:FCCID:2APNR-GL531G Productname:IndustrialRouter Hardwareversion:GR531-MB_N Firmwareversion:GRX_1_NA_00_04_00 GosuncnTechnologyGroupCo.,Ltd. Shouldyourequireanyfurtherinformationorclarification,pleasedonothesitateto contactus. Sincerely, Signature： Printname:XiaotingChen Company:GosuncnTechnologyGroupCo.,Ltd.

GosuncnTechnologyGroupCo.,Ltd. ModularDataRe-UseAttestation We,GosuncnTechnologyGroupCo.,Ltd.confirmsthat: OriginalmoduleThemodulesreferencedbytheentire machine,FCC: 2APNR-GL531G 1.ModelNo:-GL531Gusesthesamemodulewithoutanymodification.The referencemoduleconductsdataandthepowershouldbewithin±0.5toensure therationalityofthedata. Originalmodule Themodulesreferencedbytheentiremachine GosuncnTechnologyGroupCo.,Ltd. 2.Whentheradiationantennawaschanged,wetestedalltheradiationtest cases.Theantennagainisasfollows： RFPowerOutputandEffectiveIsotropicRadiatedPower RadiatedSpuriousEmission ConductedEmission Signature: PrintedName:XiaotingChen Company:GosuncnTechnologyGroupCo.,Ltd. GosuncnTechnologyGroupCo.,Ltd. JobTitle:Engineer Email:[email protected] Telephone:+86-20-32068888 Companyaddress:6F,2819KaiChuangBlvd.,ScienceTown,HuangpuDistrict,Guangzhou City,Guangdong,China.510530

Gosuncn Technology Group Co., Ltd. March 2, 2026 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(5)(i) request for 2APNR-GR531NA. Gosuncn Technology Group 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) Xiaoting Chen Gosuncn Technology Group Co., Ltd. March 2, 2026 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(5)(ii) request for 2APNR-GR531NA Gosuncn Technology Group Co., Ltd. (“the applicant”) 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. Sincerely, (Applicant signature) (Applicant printed name) Xiaoting Chen

Gosuncn Technology Group Co., Ltd. POWER OF ATTORNEY DATE:March 17, 2026 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 We, the undersigned, hereby authorize Eurofins TA Technology (Shanghai) Co., Ltd./Freda Shou on our behalf, to apply to FCC on our equipment for FCC ID:2APNR-GR531NA. Any and all acts carried out by Eurofins TA Technology (Shanghai) Co., Ltd. on our behalf shall have the same effect as acts of our own. Sincerely, Print name: Xiaoting Chen Signature:

GosuncnTechnologyGroupCo.,Ltd. RequestforConfidentiality Date:March30,2026 Subject:ConfidentialityRequestfor:FCCID:2APNR-GR531NA PursuanttoFCC47CRF0.457(d)and0.459andICRSP-100,Section10,theapplicantrequeststhatapartofthe subjectFCCapplicationbeheldconfidential. TypeofConfidentialityRequestedExhibit ShortTermPermanentBlockDiagrams ShortTermExternalPhotos ShortTermPermanent* 1 InternalPhotos ShortTermPermanentOperationDescription/TheoryofOperation ShortTermPermanentPartsList&Placement/BOM ShortTermPermanentSchematics ShortTermPermanent FCCSWSECURITYDESCRIPTION ） ShortTermPermanentTuneUpInformation ShortTermPermanentTestSetupPhotos ShortTermPermanent*User’sManual ShortTermPermanent SOFTWARESECURITY REQUIREMENTSFORU-NIlDEVICES *Note:______(InsertExplanationasNecessary)______ GosuncnTechnologyGroupCo.,Ltd.hasspentsubstantialeffortindevelopingthisproductanditisoneofthefirst ofitskindinindustry.Havingthesubjectinformationeasilyavailableto"competition"wouldnegatethe advantagetheyhaveachievedbydevelopingthisproduct.Notprotectingthedetailsofthedesignwillresultin financialhardship. PermanentConfidentiality: Theapplicantrequeststheexhibitslistedaboveaspermanentlyconfidentialbepermanentlywithheldfrompublic reviewduetomaterialsthatcontaintradesecretsandproprietaryinformationnotcustomarilyreleasedtothe public. Short-TermConfidentiality: Theapplicantrequeststheexhibitsselectedaboveasshorttermconfidentialbewithheldfrompublicviewfora periodof_180__daysfromthedateoftheGrantofEquipmentAuthorizationandpriortomarketing.Thisisto avoidprematurereleaseofsensitiveinformationpriortomarketingorreleaseoftheproducttothepublic. ApplicantisalsoawarethattheyareresponsibletonotifyTCBintheeventinformationregardingtheproductor theproductismadeavailabletothepublic.TCBwillthenreleasethedocumentslistedaboveforpublic disclosurepursuanttoFCCPublicNoticeDA04-1705. NOTEforIndustryCanadaApplications: TheapplicantunderstandsthatuntilsuchtimethatICdistinguishesbetweenShortTermandPermanent Confidentiality,eithertypeofmarkedexhibitabovewillsimplybemarkedConfidentialwhensubmittedtoIC. Sincerely, Signature: PrintedNameofSignee:XiaotingChen Company:GosuncnTechnologyGroupCo.,Ltd. Phone:+86-20-32068888 Email:[email protected] Jobtitle:Engineer

EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 1 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. EUT Appearance EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 2 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 3 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 4 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. a: EUT EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 5 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Main & Div Antenna EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 6 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. WLAN Antenna EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 7 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. GPS Antenna b: Antenna EUT Appearance Report No.: EFTA25120112-IE-01 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 8 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. c: Adapter d: Cable Picture 1: Constituents of EUT

DCGND DIDO PWR SIG NET WLAN LAN1 LAN2 RS232/485 WAN/LAN1 LAN2 RESET POWER 标贴供应商来料 （空白位置为变量，工厂自行打印） Size: 73.6*73.9mm Code: 139030201368 标贴打印说明 R=1.7mm的6个圆形打孔，切穿底纸。 思源黑体 CN - Regular 6pt 思源黑体 CN - Regular 6pt DCGND DIDO PWR SIG NET WLAN LAN1 LAN2 RS232/485 WAN/LAN1 LAN2 RESET POWER 思源黑体 CN-Medium 6.5pt Logo 整体长 20mm Model: GR531-NA IMEI: 123456789123456 S/N: 123456789123 ADDRESS(LAN IP): 192.168.2.1 USERNAME:admin PASSWORD: Aa1Bb2Cc3Dd4 SSID 2.4G: GR531_2.4G_XXXXXX SSID 5G: GR531_5G_XXXXXX WIFI PASSWORD: 12345678 RATED VOLTAGE·CURRENT: 9V-30V 1.3A-0.4A Model: GR531-NA IMEI: 123456789123456 S/N: 123456789123 ADDRESS(LAN IP): 192.168.2.1 USERNAME:admin PASSWORD: Aa1Bb2Cc3Dd4 SSID 2.4G: GR531_2.4G_XXXXXX SSID 5G: GR531_5G_XXXXXX WIFI PASSWORD: 12345678 RATED VOLTAGE·CURRENT: 9V-30V 1.3A-0.4A 思源黑体 CN - Regular 4.5pt,行距 5.8pt 思源黑体 CN - Regular 4.5pt 二维码尺寸：15*15mm，二维码完整的展示是： IMEI:123456789123456;S/N:123456789123;ADDRESS(LAN IP):192.168.2.1;USERNAME:admin;PASSWORD:Aa1Bb2Cc3Dd4;S SID 2.4G:GR531_2.4G_XXXXXX;SSID 5G:GR531_5G_XXXXXX;WIFI PASSWORD:12345678;WPS PIN:XXXXXXXX 备注：SSID：GR531_5G（或2.4G）_XXXXXX(XXXXXX为Mac地址后 六位)，PASSWD：WIFI PASSWORD：IMEI后八位，WPS PIN：8位 随机数字 FCC ID: 2APNR-GR531NAFCC ID: 2APNR-GR531NA

Internal photo Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 1 of 6 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo Internal photo Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 2 of 6 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 3 of 6 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 4 of 6 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 5 of 6 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 6 of 6 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd.

Prepared by: Wei Fangying Approved by: Xu Kai Eurofins TA Technology (Shanghai) Co., Ltd. Building 3, No.145, Jintang Rd, Pudong Shanghai, P.R.China TEL: +86-021-50791141/2/3 FAX: +86-021-50791141/2/3-8000 MPE TEST REPORT Applicant Gosuncn Technology Group Co., Ltd. FCC ID 2APNR-GR531NA Product Router Brand GOSUNCN Model GR531-NA Report No. EFTA25120112-IE-04-M1 Issue Date March 2, 2026 Eurofins TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in FCC 47 CFR Part 1 §1.1310, §2.1091. The test results show that the equipment tested can demonstrate compliance with the requirements as documented in this report. MPE Test Report Report No.: EFTA25120112-IE-04-M1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-014S Page 2 of 10 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Table of Contents 1 Test Laboratory ................................................................................................................................. 3 1.1 Notes of the Test Report ............................................................................................................ 3 1.2 Test Facility ................................................................................................................................ 3 1.3 Testing Location......................................................................................................................... 3 1.4 Laboratory Environment ............................................................................................................ 3 2 Description of Equipment Under Test ............................................................................................... 4 3 Maximum Tune up and Antenna Gain .............................................................................................. 6 4 MPE Limit .......................................................................................................................................... 7 5 RF Exposure Evaluation Result ........................................................................................................ 9 ANNEX A: The EUT Appearance ........................................................................................................... 10 MPE Test Report Report No.: EFTA25120112-IE-04-M1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-014S Page 3 of 10 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 1 Test Laboratory 1.1 Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. 1.2 Test Facility FCC (Designation number: CN1179, Test Firm Registration Number: 446626) Eurofins TA Technology (Shanghai) Co., Ltd. has been listed on the US Federal Communications Commission list of test facilities recognized to perform measurements. 1.3 Testing Location Company: Eurofins TA Technology (Shanghai) Co., Ltd. Address: Building 3, No.145, Jintang Rd, Pudong Shanghai, P.R.China City: Shanghai Post code: 201201 Country: P. R. China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: https://www.eurofins.com/electrical-and-electronics E-mail: [email protected] 1.4 Laboratory Environment Temperature Min. = 18C, Max. = 25C Relative humidity Min. = 20%, Max. = 80% Ground system resistance < 0.5  Ambient noise is checked and found very low and in compliance with requirement of standards. Reflection of surrounding objects is minimized and in compliance with requirement of standards. MPE Test Report Report No.: EFTA25120112-IE-04-M1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-014S Page 4 of 10 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 2 Description of Equipment Under Test Client Information Applicant Gosuncn Technology Group Co., Ltd. Applicant address 6F, 2819 KaiChuang Blvd., Science Town, Huangpu District, Guangzhou City, Guangdong, China. 510530 Manufacturer Gosuncn Technology Group Co., Ltd. Manufacturer address 6F, 2819 KaiChuang Blvd., Science Town, Huangpu District, Guangzhou City, Guangdong, China. 510530 General Technologies EUT Description Model GR531-NA Lab Internal SN 251209-02-001 Hardware Version GR531-MB_N Software Version GRX_1_NA_00_04_00 Frequency Band TX (MHz) RX (MHz) LTE Band 2 1850 ~ 1910 1930 ~ 1990 LTE Band 4 1710 ~ 1755 2110 ~ 2155 LTE Band 5 824 ~ 849 869 ~ 894 LTE Band 12 699 ~ 716 729 ~ 746 LTE Band 13 777 ~ 787 746 ~ 756 LTE Band 25 1850 ~ 1915 1930 ~ 1995 LTE Band 26 814 ~ 849 859 ~ 894 LTE Band 66 1710 ~ 1780 2110 ~ 2180 Wi-Fi 2.4G 2400 ~ 2483.5 2400 ~ 2483.5 Wi-Fi 5GHz (U-NII-1) 5150 ~ 5250 5150 ~ 5250 Wi-Fi 5GHz (U-NII-2A) 5250 ~ 5350 5250 ~ 5350 Wi-Fi 5GHz (U-NII-2C) 5470 ~ 5725 5470 ~ 5725 Wi-Fi 5GHz (U-NII-3) 5725~5850 5725~5850 EUT Accessory Adapter Manufacturer: Shenzhen ABP Technology Co.,LTD Model: AD0181-1201500GB Date of Testing December 23, 2025 ~ December 27, 2025 Date of Sample Received December 9, 2025 Note: MPE Test Report Report No.: EFTA25120112-IE-04-M1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-014S Page 5 of 10 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 1. The EUT is sent from the applicant to Eurofins TA and the information of the EUT is declared by the applicant. 2. All indications of Pass/Fail in this report are opinions expressed by Eu…

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RF Test Data Report No.: EFTA25120112-IE-03-R1-ANNEX G Eurofins TA Technology (Shanghai) Co., Ltd. Page 1 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Radiated Spurious Emission Sweep the whole frequency band through the range from 9kHz to the 10th harmonic of the carrier, the emissions below the noise floor will not be recorded in the report. If disturbances were found more than 20dB below limit line, the mark is not required for the EUT. Radiated measurements are performed by rotating the EUT in three different orthogonal test planes. EUT stand-up position (Z axis), lie-down position (X, Y axis). Receiver antenna polarization (Horizontal and Vertical). The worst-case configuration and its corresponding results are documented in the test report. LTE X axis, Horizontal polarization LTE Band 2 CH-Middle Band width Harmonic Frequency (MHz) SG (dBm) Cable Loss (dB) Gain (dBi) Antenna Polarization Result Level (dBm) Limit (dBm) Margin (dB) Azimuth (deg) 5MHz 2 3755.50 -- -- -- -- -- -- -- -- 3 5633.00 -- -- -- -- -- -- -- -- 4 7511.50 -48.63 4.20 12.20 Horizontal -40.63 -13.00 27.63 74 5 9387.50 -- -- -- -- -- -- -- -- 6 11265.00 -- -- -- -- -- -- -- -- 7 13142.00 -- -- -- -- -- -- -- -- 8 15020.00 -- -- -- -- -- -- -- -- 9 16897.50 -- -- -- -- -- -- -- -- 10 18800.00 -- -- -- -- -- -- -- -- Note: 1. The other Spurious RF Radiated emissions level is no more than noise floor. 2. The worst emission was found in the antenna is Horizontal position. RF Test Data Report No.: EFTA25120112-IE-03-R1-ANNEX G Eurofins TA Technology (Shanghai) Co., Ltd. Page 2 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. LTE Band 4 CH-Middle Band width Harmonic Frequency (MHz) SG (dBm) Cable Loss (dB) Gain (dBi) Antenna Polarization Result Level (dBm) Limit (dBm) Margin (dB) Azimuth (deg) 5MHz 2 3460.50 -53.98 2.70 12.70 Horizontal -43.98 -13.00 30.98 43 3 5191.50 -- -- -- -- -- -- -- -- 4 6930.00 -- -- -- -- -- -- -- -- 5 8662.50 -- -- -- -- -- -- -- -- 6 10380.00 -- -- -- -- -- -- -- -- 7 12110.00 -- -- -- -- -- -- -- -- 8 13840.00 -- -- -- -- -- -- -- -- 9 15570.00 -- -- -- -- -- -- -- -- 10 17300.00 -- -- -- -- -- -- -- -- Note: 1. The other Spurious RF Radiated emissions level is no more than noise floor. 2. The worst emission was found in the antenna is Horizontal position. LTE Band 5 CH-Middle Band width Harmonic Frequency (MHz) SG (dBm) Cable Loss (dB) Gain (dBi) Antenna Polarization Result Level (dBm) Limit (dBm) Margin (dB) Azimuth (deg) 5MHz 2 1668.60 -54.01 1.70 8.70 Horizontal -49.16 -13.00 36.16 49 3 2502.87 -53.69 2.30 12.00 Horizontal -46.14 -13.00 33.14 96 4 3337.50 -- -- -- -- -- -- -- -- 5 4171.80 -51.29 3.00 12.50 Horizontal -43.94 -13.00 30.94 153 6 5006.25 -- -- -- -- -- -- -- -- 7 5840.63 -- -- -- -- -- -- -- -- 8 6675.00 -- -- -- -- -- -- -- -- 9 7506.80 -- -- -- -- -- -- -- -- 10 8343.75 -- -- -- -- -- -- -- -- Note: 1. The other Spurious RF Radiated emissions level is no more than noise floor. 2. The worst emission was found in the antenna is Horizontal position. RF Test Data Report No.: EFTA25120112-IE-03-R1-ANNEX G Eurofins TA Technology (Shanghai) Co., Ltd. Page 3 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. LTE Band 12 CH-Middle Band width Harmonic Frequency (MHz) SG (dBm) Cable Loss (dB) Gain (dBi) Antenna Polarization Result Level (dBm) Limit (dBm) Margin (dB) Azimuth (deg) 5MHz 2 1410.60 -53.64 1.70 8.70 Horizontal -48.79 -13.00 35.79 153 3 2115.53 -51.33 2.10 11.10 Horizontal -44.48 -13.00 31.48 13 4 2820.00 -63.64 2.30 13.10 Horizontal -54.99 -13.00 41.99 143 5 3526.80 -45.48 2.60 12.70 Horizontal -37.53 -13.00 24.53 45 6 4230.00 -- -- -- -- -- -- -- -- 7 4935.00 -- -- -- -- -- -- -- -- 8 5640.00 -- -- -- -- -- -- -- -- 9 6345.00 -- -- -- -- -- -- -- -- 10 7048.67 -- -- -- -- -- -- -- -- Note: 1. The other Spurious RF Radiated emissions level is no more than noise floor. 2. The worst emission was found in the antenna is Horizontal position. LTE Band 13 CH-Middle Band width Harmonic Frequency (MHz) SG (dBm) Cable Loss (dB) Gain (dBi) Antenna Polarization Result Level (dBm) Limit (dBm) Margin (dB) Azimuth (deg) 5MHz 2 1559.77 -48.45 1.70 8.70 Horizontal -41.45 -40.00 1.45 12 3 2339.61 -38.07 2.10 12.00 Horizontal -30.32 -13.00 17.32 54 4 3119.40 -51.12 2.30 13.10 Horizontal -42.47 -13.00 NA 200 5 3897.50 -- -- -- -- -- -- -- -- 6 4677.00 -- -- -- -- -- -- -- -- 7 5456.50 -- -- -- -- -- -- -- -- 8 6236.00 -- -- -- -- -- -- -- -- 9 7023.40 -- -- -- -- -- -- -- -- 10 7795.00 -- -- -- -- -- -- -- -- Note: 1. The other Spurious RF Radiated emissions level is no more than noise floor. 2. The worst emission was found in the antenna is Horizontal position. RF Test Data Report No.: EFTA25120112-IE-03-R1-ANNEX G Eurofins TA Technology (Shanghai) Co., Ltd. Page 4 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. LTE Band 25 CH-Middle Band width Harmonic Frequency (MHz) SG (dBm) Cable Loss (dB) Gain (dBi) Antenna Polarization Result Level (dBm) Limit (dBm) Margin (dB) Azimuth (deg) 5MHz 2 3765.00 -- -- -- -- -- -- -- -- 3 5647.50 -- -- -- -- -- -- -- -- 4 7521.00 -47.91 4.20 12.20 Horizontal -39.91 -13.00 26.91 90 5 9412.50 -- -- -- -- -- -- -- -- 6 11295.00 -- -- -- -- -- -- -- -- 7 13177.50 -- -- -- -- -- -- -- -- 8 15060.00 -- -- -- -- -- -- -- -- 9 16942.50 -- -- -- -- -- -- -- -- 10 18825.00 -- -- -- -- -- -- -- -- Note: 1. The other Spurious RF Radiated emissions level is no more than noise floor. 2. The worst emission was found i…

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