2BC9I-P1Laser Engraving Machine

Shenzhen AtomStack Technologies Co., Ltd. Address:17th Floor, Building 3A, Phase II, Intelligent Park, No. 76, Baohe Avenue Shenzhen, Guangdong 518172 China ChinaTel: +86 13928438418 Fax: +86-755-89667680 Email:[email protected] Date: 2025-09-08 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Attestation letter We, Shenzhen AtomStack Technologies Co., Ltd., have a product Laser Engraving Machine, Model name: P1, FCC ID: 2BC9I-P1, for the purpose of marketing, this product only supports 2.4G WiFi：2412-2462MHz（802.11b/g/n20/n40）. The other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely Yours, Signature: Jason LI Title: CEO

ShenzhenAtomStackTechnologiesCo.,Ltd. Address:17thFloor,Building3A,PhaseII,IntelligentPark,No.76,BaoheAvenueShenzhen, Guangdong518172China ChinaTel:+8613928438418 Fax:+86-755-89667680 Email:[email protected] CFR47§2.911(d)(5)(i)AttestationLetter AttestationLetter Date:2025-09-08 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(i)Filing FCCID:2BC9I-P1 ShenzhenAtomStackTechnologiesCo.,Ltd.certifiesthattheequipmentforwhichauthorization issought,isnot“covered”equipmentprohibitedfromreceivinganequipmentauthorization pursuanttosection2.903oftheFCCrules. SincerelyYours, Signature: JasonLI Title:CEO

ShenzhenAtomStackTechnologiesCo.,Ltd. Address:17thFloor,Building3A,PhaseII,IntelligentPark,No.76,BaoheAvenueShenzhen, Guangdong518172China ChinaTel:+8613928438418 Fax:+86-755-89667680 Email:[email protected] CFR47§2.911(d)(5)(ii)AttestationLetter AttestationLetter Date:2025-09-08 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(ii)Filing FCCID:2BC9I-P1 ShenzhenAtomStackTechnologiesCo.,Ltd.certifiesthatasofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredListasanentityproducing“covered” equipment.AndourproductdoesnotuseKasperskysoftwareinformation. SincerelyYours, Signature: JasonLI Title:CEO

U.S.AGENTLETTEROFATTESTATION Date:2025-09-08 FEDERALCOMMUNICATIONSCOMMISSION AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(7)Filing FCCID:2BC9I-P1 ShenzhenAtomStackTechnologiesCo.,Ltd.certifiesthat,asofthedateofthefilingofthe application,IconsighisourdesignatedU.S.agentforserviceofprocessfortheabove referencedFCCID.ShenzhenAtomStackTechnologiesCo.,Ltd.acceptstomaintainan agentfornolessthanoneyearafterthegranteehasterminatedallmarketingand importationortheconclusionofanyCommission-relatedproceedinginvolvingthe equipment. Iconsighaccepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: CompanyName:Iconsigh Address:2310HomesteadRoad,SuiteC1,LosAltos,CA,94024,UnitedStates FRN:0033398652 Tel.:+1(408)320-9867 Email:[email protected] Signedby(printedname):BenjaminKaur Signature: Applicant:ShenzhenAtomStackTechnologiesCo.,Ltd. Address:17thFloor,Building3A,PhaseII,IntelligentPark,No.76,BaoheAvenueShenzhen, Guangdong518172China FRN:0034376301 Tel:+8613928438418 Email:[email protected] Signedby(printedname):JasonLI Signature:

QA-FR-170-B ShenzhenAtomStackTechnologiesCo.,Ltd. Address:17thFloor,Building3A,PhaseII,IntelligentPark,No.76,BaoheAvenue Shenzhen,Guangdong518172China Tel:+8613928438418 Fax:+86-755-89667680 Email:[email protected] FCCAuthorization Date:2025-09-08 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorization Towhomitmayconcern: We(ShenzhenAtomStackTechnologiesCo.,Ltd.),theundersigned,herebyauthorize BayAreaComplianceLaboratories,Corp.(Shenzhen)toactonitsbehalfinallmatters relatingtoapplicationforEquipmentauthorization,includingthesigningofall documentsrelatingtothesematters.AllactscarriedoutbyBayAreaCompliance Laboratories,Corp.(Shenzhen)onourbehalfshallhavethesameeffectasourown action. We,theundersigned,herebycertifythatwearenotsubjecttoadenialoffederalbenefits, thatincludesFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988, 21U.S.C.862. Thisauthorizationisvaliduntilfurtherwrittennoticefromtheapplicant. SincerelyYours, Signature: JasonLI Title:CEO

ShenzhenAtomStackTechnologiesCo.,Ltd. Address:17thFloor,Building3A,PhaseII,IntelligentPark,No.76,BaoheAvenue Shenzhen,Guangdong518172China ChinaTel:+8613928438418 Fax:+86-755-89667680 Email:[email protected] FCCConfidentialAuthorization Date:2025-09-08 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestregardingapplicationforcertificationof FCCID:2BC9I-P1 InaccordancewithSections0.457and0.459oftheCommission’sRules,Shenzhen AtomStackTechnologiesCo.,Ltd.herebyrequestslong-termconfidentialtreatmentof informationaccompanyingthisapplicationasoutlinedbelow: BlockDiagram Schematics OperationDescription Theabovematerialscontainproprietaryandconfidentialinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsprovidesunjustified benefitstoitscompetitorsinthemarket. SincerelyYours, Signature: JasonLI Title:CEO

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 1 of 6 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 2 of 6 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 3 of 6 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 4 of 6 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 5 of 6 Adapter Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 6 of 6

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.:2501U09891E-RF EXHIBIT A - FCC ID LABEL AND LOCATION FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 1 of 13 EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 2 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 3 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 4 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 5 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 6 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 7 of 13

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 8 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 9 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 10 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 11 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 12 of 13 Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2501U09891E-RF Page 13 of 13 Antenna

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501U09891E-RF-00 TR-EM-RF004 Page 105 of 107 Version 4.1 RF EXPOSURE EVALUATION MPE-Based Exemption Applicable Standard According to subpart 15.247 (i) and subpart 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. According to KDB 447498 D04 v01 Interim General RF Exposure Guidance MPE-Based Exemption: General frequency and separation-distance dependent MPE-based effective radiated power(ERP) thresholds are in Table B.1 [Table 1 of § 1.1307(b)(3)(i)(C)] to support an exemptionfrom further evaluation from 300 kHz through 100 GHz. Ris the minimum separation distance in meters f = frequency in MHz Result Antenna Gain#ERP Mode Frequency (MHz) Tune up conducted power # (dBm) (dBi)(dBd)(dBm)(W) Evaluation Distance (m) ERP Limit (W) Wi-Fi2412-2462252.450.3025.300.3390.20.768 Note: The tune up conducted power and antenna gain was declared by the applicant. To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm from nearby persons. Result: Compliant

SHENZHEN SUNSHOW INDUSTRIAL CO.LTD Specification sheet RF Cabie Assembiy Specification Main teclmlcal specification Frequency Range （MHz） 2400 Impedance 50 Average Efficiency 55.3% MAX Gain 2.45 dBi Physica Properties Cable Type Connector IPEX 1 Storage Temp -20°C~+70°C Operating Temp -20°C~+60°C black Address: 3rd Floor, Building A, Taihe Resort, Taihe Road, Pingdi Street, Longgang District, Shenzhen City SHENZHEN SUNSHOW INDUSTRIAL CO.LTD 1.Test project and test equipment Test project Testing equipment 1.S11 test 1（Return Loss） 2.（VSWR） Network analyzer ：Agilent E5071C 2. PASSIVE TEST DATE 1.（Gain） 2.（Efficiency） 1.OTA Microwave darkroom：ETS 5x3x3 m (3D) Chamber 2. Wireless broadband signal tester:: Rohde & Schwarz CMW500 Address: 3rd Floor, Building A, Taihe Resort, Taihe Road, Pingdi Street, Longgang District, Shenzhen City SHENZHEN SUNSHOW INDUSTRIAL CO.LTD 2. Electrical performance testing -S11 Frequency band 2412Mhz 2472Mhz 1.（Return Loss） -20.87 -16.43 2.（VSWR） 1.19 1.3 Address: 3rd Floor, Building A, Taihe Resort, Taihe Road, Pingdi Street, Longgang District, Shenzhen City SHENZHEN SUNSHOW INDUSTRIAL CO.LTD 2.1 OTA PASSIVE TEST Efficiency&Gain Frequency (MHz) Efficiency (%) Gain (dBi) 2400 39.04 0.57 2410 39.33 0.44 2420 39.76 0.28 2430 45.04 0.64 2440 54.41 1.34 2450 61.68 1.89 2460 60.96 1.77 2470 67.45 2.09 2480 65.53 2.41 2490 68.27 2.13 2500 67.85 2.45 Address: 3rd Floor, Building A, Taihe Resort, Taihe Road, Pingdi Street, Longgang District, Shenzhen City SHENZHEN SUNSHOW INDUSTRIAL CO.LTD 2.2 OTA PASSIVE TEST 图 3D 2D 2D2D Address: 3rd Floor, Building A, Taihe Resort, Taihe Road, Pingdi Street, Longgang District, Shenzhen City SHENZHEN SUNSHOW INDUSTRIAL CO.LTD Product layout drawing Address: 3rd Floor, Building A, Taihe Resort, Taihe Road, Pingdi Street, Longgang District, Shenzhen City

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF004 Page 1 of 107 Version 4.1 TEST REPORT Applicant Name:Shenzhen AtomStack Technologies Co., Ltd. Address:17th Floor, Building 3A, Phase II,Intelligent Park, No. 76, Baohe Avenue Shenzhen, Guangdong 518172 China Report Number:2501U09891E-RF-00 FCC ID:2BC9I-P1 Test Standard (s) FCC PART 15.247 Sample Description Product Type:Laser Engraving Machine Model No.:P1 Multiple Model(s) No.:N/A Trade Mark:N/A Date Received:2025-06-05 Issue Date:2025-09-20 Test Result:Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By:Approved By: Ekko WuJimmy Xiao RF EngineerEMC Manager Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501U09891E-RF-00 TR-EM-RF004 Page 2 of 107 Version 4.1 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ..........................................................................................................................3 GENERAL INFORMATION ........................................................................................................................................4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)......................................................................................4 OBJECTIVE ....................................................................................................................................................................4 TEST METHODOLOGY....................................................................................................................................................4 MEASUREMENT UNCERTAINTY .....................................................................................................................................5 TEST FACILITY ..............................................................................................................................................................5 SYSTEM TEST CONFIGURATION ...........................................................................................................................6 SUMMARY OF TEST RESULTS ................................................................................................................................9 TEST EQUIPMENT LIST ..........................................................................................................................................10 REQUIREMENTS AND TEST PROCEDURES ......................................................................................................12 AC LINE CONDUCTED EMISSIONS...............................................................................................................................12 SPURIOUS EMISSIONS ..................................................................................................................................................14 6 DB EMISSION BANDWIDTH .......................................................................................................................................17 MAXIMUM CONDUCTED OUTPUT POWER ...................................................................................................................19 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE....................................................................................................20 POWER SPECTRAL DENSITY ........................................................................................................................................21 DUTY CYCLE ...............................................................................................................................................................22 ANTENNA REQUIREMENT .....................................................................................................................................23 TEST DATA AND RESULTS .....................................................................................................................................24 AC LINE CONDUCTED EMISSIONS...............................................................................................................................24 SPURIOUS EMISSIONS ..................................................................................................................................................27 RF CONDUCTED DATA ................................................................................................................................................85 6DB EMISSION BANDWIDTH........................................................................................................................................85 99% OCCUPIED BANDWIDTH ......................................................................................................................................89 MAXIMUM CONDUCTED OUTPUT POWER ...................................................................................................................93 POWER SPECTRAL DENSI…

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Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501U09891E-RF-00-TSP Page 1 / 3 TEST SETUP PHOTOGRAPHS Conducted Emissions - Front View Conducted Emissions - Side View Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501U09891E-RF-00-TSP Page 2 / 3 Radiated Emissions View (Below 30MHz) Radiated Emissions View (Below 1 GHz) Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501U09891E-RF-00-TSP Page 3 / 3 Radiated Emissions View (1-18 GHz) Radiated Emissions View (18-25 GHz) *****END *****