2BBBQ-STG6816KBLED Laser Light Gal

FCC Statement: This device complies with part 15 of the FCC Rules. Operation i s subject to t he following tw o conditions: (1) This device may 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 t he limits f or 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, t here is no guarant ee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning t he 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. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void t he user's authority to operate t he equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environm ent. This transmitter must not be co‐located or operating in conjunction with any other antenna or transmitter. To satisfy FCC RF exposure requirements, a separation distance of 20cm or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended

NINGBOAMIBAINTERNATIONALTRADECO.,LTD 06-27-2023 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor(FCCID:2BBBQ-STG6816KB) [NINGBOAMIBAINTERNATIONALTRADECO.,LTD](“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibited fromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Sincerely, RITAYU NINGBOAMIBAINTERNATIONALTRADECO.,LTD 06-27-2023 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor(FCCID:2BBBQ-STG6816KB) HENGYEINTL.DEVELOPMENTCO.,LTD.](“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListasan entityproducing“covered”equipment. Sincerely, RITAYU

NINGBOAMIBAINTERNATIONALTRADECO.,LTD AgentAuthorizationLetter 2023-06-27 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 USA RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenMostTechnologyServiceCo.,Ltd.toact onourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthe signingofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuse Actof1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Name:RITAYU Position:Manager CompanyName: NINGBOAMIBAINTERNATIONALTRADECO.,LTD Address:2-2,No.247,WangshanRoad,JiangbeiDistrict,Ningbo,China Tel/Fax18668536636 E-Mail:[email protected]

NINGBOAMIBAINTERNATIONALTRADECO.,LTD LongTermConfidentialityRequestLetter 2023-06-27 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 USA RE:CONFIDENTIALITYREQUESTFOR(FCCID:2BBBQ-STG6816KB) ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459of CFR47.Wehaverequestedthatthe -e.g.Blockdiagram -e.g.SCH -e.g.OperationalDescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublicreview. Theabovedocumentsarecompanyproprietaryinformationthatcouldnevergetinto thepossessionofyourcompetition. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Name:RITAYU Position:Manager CompanyName: NINGBOAMIBAINTERNATIONALTRADECO.,LTD Address:2-2,No.247,WangshanRoad,JiangbeiDistrict,Ningbo,China Tel/Fax18668536636 E-Mail:[email protected]

ModelNo.:STG-6816-KB FRONTVIEWOFSAMPLE BACKVIEWOFSAMPLE ModelNo.:STG-6816-KB LEFTVIEWOFSAMPLE RIGHTVIEWOFSAMPLE ModelNo.:STG-6816-KB TOPVIEWOFSAMPLE BOTTOMVIEWOFSAMPLE ModelNo.:STG-6816-KB

ModelNo.:STG-6816-KB Page1of2 INTERNALPHOTOOFSAMPLE INTERNALPHOTOOFSAMPLEPCB BT ModelNo.:STG-6816-KB Page2of2 INTERNALPHOTOOFSAMPLEPCB

ShenzhenMost TechnologyServiceCo., Ltd. No.5,2nd LangshanRoad,NorthDistrict,Hi-techIndustrialPark,Nanshan, Shenzhen,Guangdong,Chin a. RF ExposureEvaluationReport ReportReferenceNo . ....................... : FCC ID.. ............................................... : MTEB23060011-H 2BBBQ-STG6816KB Compiled by ( position+printedname+signature)..:File administratorsAlisaLuo Supervisedby ( position+printedname+signature)..:Test EngineerSunnyDeng Approvedby ( position+printedname+signature) .. : ManagerYvetteZhou Dateof issue ......................................... :Jnu.01,2023 RepresentativeLaboratoryName . :ShenzhenMost TechnologyServiceCo., Ltd. Address.................................................: No.5,2nd LangshanRoad,NorthDistrict,Hi-techIndustrialPark, Nanshan,Shenzhen,Guangdong,China. Applicant’s name...............................:NINGBOAMIBAINTERNATIONALTRADECO.,LTD Address.................................................: 2-2,No.247,WangshanRoad,JiangbeiDistrict,Ningbo,China Test specification/Standard............: 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB447498D01GeneralRF ExposureGuidancev06 TRF Originator ...................................... :ShenzhenMostTechnologyServiceCo., Ltd. ShenzhenMost TechnologyServiceCo., Ltd. All rightsreserved. This publicationmay be reproducedin wholeor in part for non-commercialpurposesas long as the ShenzhenMostTechnologyServiceCo., Ltd. is acknowledgedas copyrightownerand sourceof the material.ShenzhenMostTechnologyServiceCo., Ltd. takesno responsibilityfor and will not assume liabilityfor damagesresultingfrom the reader'sinterpretationof the reproducedmaterialdue to its placementand context. Test item description ........................ :LED LaserLightGalaxySpeaker TradeMark............................................: N/A Model/Typereference.........................:STG-6816-KB ListedModels......................................:N/A ModulationType..................................:GFSK,π/4DQPSK,8DPSK OperationFrequency .......................... :From2402MHzto 2480MHz HardwareVersion ................................. N/A SoftwareVersion ................................... N/A Rating.....................................................:DC 5V (by USB ) Result.....................................................:PASS ReportNo.:MTEB23060011-HPage 2 of 6 TESTREPORT EquipmentunderTest:LEDLaserLightGalaxySpeaker Model/Type:STG-6816-KB ListedModels: N/A Remark N/A Applicant: NINGBOAMIBAINTERNATIONALTRADECO.,LTD Address:2-2,No.247,WangshanRoad,JiangbeiDistrict,Ningbo,China Manufacturer: NINGBOAMIBAINTERNATIONALTRADECO.,LTD Address: 2-2,No.247,WangshanRoad,JiangbeiDistrict,Ningbo,China TestResult : PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. ReportNo.:MTEB23060011-HPage 3 of 6 1.RevisionHistory RevisionIssueDateRevisionsRevisedBy 002023.06.01InitialIssueAlisaLuo ReportNo.:MTEB23060011-HPage 4 of 6 2.SAREvaluation 2.1RFExposureComplianceRequirement 2.1.1StandardRequirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06 4.3.1.StandaloneSARtestexclusionconsiderations UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,bymeasurementor numericalsimulation,isnotrequiredwhenthecorrespondingSARExclusionThresholdcondition,listed below,issatisfied. 2.1.2Limits AccordingtoFCCPart1.1310:Thecriterialistedinthefollowingtableshallbeusedtoevaluatethe environmentimpactofhumanexposuretoradiofrequency(RF)radiationasspecifiedinpart1.1307(b) F=FrequencyinMHz FriisFormula Friistransmissionformula:Pd=(Pout*G)/(4*Pi*R2)Where Pd=powerdensityinmW/cm2 Pout=outputpowertoantennainmW G=gainofantennainlinearscale Pi=3.1416 R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm2.Ifweknowthemaximumgainoftheantennaandthetotalpower inputtotheantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. ReportNo.:MTEB23060011-HPage 5 of 6 2.1.3EUTRFExposure AntennaGain:0dBi AntennaGain:ThemaximumGainmeasuredinfullyanechoicchamberis2.4inlinearscale.Output PowerIntoAntenna&RFExposureEvaluationDistance: BTclassic GFSK Testchannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm) Lowest(2402MHz) 0.6890.689 ±1 1.689 Middle(2440MHz)1.2331.233±12.233 Highest(2480MHz)2.2982.298±13.298 π/4DQPSK Testchannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm) Lowest(2402MHz)1.5831.583±12.583 Middle(2440MHz)2.0822.082±13.082 Highest(2480MHz) 3.0433.043 ±1 4.043 8DPSK Testchannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm) Lowest(2402MHz)1.9911.991±12.991 Middle(2440MHz) 2.4732.473 ±1 3.473 Highest(2480MHz) 3.339 3.339±1 4.339 Worstcase:8DPSK Channel Maximum tune-upPower (dBm) MaximumPeak ConductedOutput Power (MW) AntennaGain (dBi) Power Density atR=20 cm (mW/cm2) LimitResult Highest(2480MHz) 4.339 2.721.30.000731.0Pass Note:1)RefertoreportMTEB23060011-R1forEUTtestMaxConductedaverageOutputPowervalue. Note:2)Pd=(Pout*G)/(4*Pi*R2)=(2.72*1.35)/(4*3.1416*20 2 )=0.00073 ReportNo.:MTEB23060011-HPage 6 of 6 .......................THEENDOFREPORT.........................

HENGYE INTL. DEVELOPMENT CO.,LTD. ROOM 1011-1016,10 /F, QILIN BLDG, No.1501 NORTH TIANTONG RD, NINGBO, CHINA Product specification Quick Reference Date All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Antenna module on the system board Frequency 2.45GHz*1 Ant. Port Input Pwr. (dBm) 0 (Typ. BT class 2 output power) Tot. Rad. Pwr. (dBm) -2.3 (Input pwr – loss pwr) Peak EIRP(dBm) 1.3 Directivity (dBi) 1 (all direction antenna) Efficiency (dB) -2.3 (58.5%) Gain (dBi) 1.3 (Peak Gain XY-plane) Maximum Power (dBm) 1.3 (XY-plane) Minimum Power (dBm) -4(XY-plane) Avg. Power (dBm) -0.5(XY-plane) Max/Min Ratio (dB) 5.3(XY-plane) Max/Avg Ratio (dB) 1.8(XY-plane) Min/Avg Ratio (dB) -3.5(XY-plane) Average Gain (dB) -0.5 (Avg Gain XY-plane) Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Avg. Module Board 1.3 -0.5 1.7 -3.8 1.1 -3.0 58.5% Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Avg. Module Board 1.3 -0.5 1.7 -3.8 1.1 -3.0 58.5% Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Avg. Module Board 1.3 -0.5 1.7 -3.8 1.1 -3.0 58.5% Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. P e a k Avg. Avg. Module Board 1.3 -0.5 1.7 -3.8 1. 1 -3.0 58.5% Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Avg. Module Board 1.3 -0.5 1.7 -3.8 1.1 -3.0 58.5% Antenna module on the system board Frequency 2.45GHz*1 Ant. Port Input Pwr. (dBm) 0 (Typ. BT class 2 output power) Tot. Rad. Pwr. (dBm) -2.3 (Input pwr – loss pwr) Peak EIRP(dBm) 1.3 Directivity (dBi) 1 (all direction antenna) Efficiency (dB) -2.3 (58.5%) Gain (dBi) 1.3 (Peak Gain XY-plane) Maximum Power (dBm) 1.3 (XY-plane) Minimum Power (dBm) -4(XY-plane) Avg. Power (dBm) -0.5(XY-plane) Max/Min Ratio (dB) 5.3(XY-plane) Max/Avg Ratio (dB) 1.8(XY-plane) Min/Avg Ratio (dB) -3.5(XY-plane) Average Gain (dB) -0.5 (Avg Gain XY-plane) Unit in dBi XY-plane XZ-plane YZ-plane Efficiency HENGYE INTL. DEVELOPMENT CO.,LTD. ROOM 1011-1016,10 /F, QILIN BLDG, No.1501 NORTH TIANTONG RD, NINGBO, CHINA Return Loss HENGYE INTL. DEVELOPMENT CO.,LTD. ROOM 1011-1016,10 /F, QILIN BLDG, No.1501 NORTH TIANTONG RD, NINGBO, CHINA The Environment of Antenna Radiation Pattern HENGYE INTL. DEVELOPMENT CO.,LTD. ROOM 1011-1016,10 /F, QILIN BLDG, No.1501 NORTH TIANTONG RD, NINGBO, CHINA 3D radiation pattern diagram XY-plane XZ-plane YZ-plane

ModelNo.:STG-6816-KB CETESTSETUP RETESTSETUP ModelNo.:STG-6816-KB RETESTSETUP