2BCRK-GY19298Bluetooth transmitter module

RGBLEDBluetoothAudioSpeakerDIYKit I.Introduction: ItisaRGBLEDSpectrumBluetoothAudioSpeakerDIYKitwithremotecontrol.It has10pcsRGBLEDmusicspectrumdisplay.ItcanplaymusicformBluetooth,TF Card,U-diskwith4ohm2inspeakers.Thevoiceisclearandloud. II.Feature: 1>.Musicspectrumdisplay 2>.BLE5.0Bluetoothaudioplay 3>.SupportTFCardandU-diskmusic 4>.Remotecontroller 5>.AdjustableNext/Prev/VOL+/VOL-/Play/Pause 6>.SupportpowerOFFmemoryfunction 7>.DIYmanualsoldering 8>.Simpleandeasytooperate III.Parameter: 1>.Itemname:RGBLEDSpectrumBluetoothAudioSpeakerDIYKit 2>.WorkVoltage:DC3.7V-5V 3>.BluetoothVersion:5.0 4>.BluetoothDistance:15meter(Max) 5>.AmplifierPower:3W*2 6>.MusicSource:Bluetooth/U-disk/TFCard 7>.ControlType:Bluetooth/RemoteController/OnBoardButton 8>.LEDColor:Yellow/Green/Red/Blue 9>.WorkTemperature:-40 °C ~85 °C 10>.WorkHumidity:0%~95%RH 11>.Size(Installed):135*74*64mm IV.Componentlisting: NO.ComponentNamePCBMarkerParameterQTY 1MetalFilmResistorR1,R320Kohm2 2MetalFilmResistorR4,R5470ohm2 3MetalFilmResistorR22Mohm1 4CD4017U1DIP-161 5RGBLEDD1-D115mm11 6TransistorS9014Q1TO-921 7MICMicrophoneMK19*7mm1 8ElectrolyticCapacitorC31uF1 9ElectrolyticCapacitorC2100uF1 10BluetoothAudioController1 114ohm3WSpeaker2in52*52*24mm2 122PinPH2.0Wire15cm4 13DC-022PowerSocket1 14PowerSocketNut1 15BlackSwitch1 16TransparentAcrylicShell6 17M3ScrewM3*10mm12 18M3NutM312 19M2ScrewM2*10mm12 20M2NutM212 21M3CopperPillarM3*8mm2 22M3ScrewM3*6mm4 23USBPowerCable100cm1 24RemoteController1 25PCB62*27*1.6mm1 Note:UserscancompletetheinstallationaccordingtothePCBsilkscreenand componentlist. V.RemoteController: VI.Note: 1>.ItisaDIYkitsothatneedfinishinstallbyuser. 2>.Itisworkvoltageis3.7V-5Vsopleasemakesuretheinputvoltagecannot morethan5V.Otherwise,itwillbedamaged. VII.Application: 1>.Trainingweldingskills 2>.Studentschool 3>.DIYproduction 4>.ProjectDesign 5>.Electroniccompetition 6>.Giftgiving 7>.Craftscollection 8>.Homedecoration 9>.Souvenircollection 10>.Graduationdesign 11>.Holidaygifts VIII.InstallationTips: 1>.Userneedstopreparethesolderingtoolatfirst. 2>.Pleasebepatientuntiltheinstallationiscomplete. 3>.ThepackageisDIYkit.Itneedfinishinstallbyuser. 4>.Thesolderingironcan'ttouchthecomponentsforalongtime(1.0second), otherwiseitwilldamagethecomponents. 5>.Payattentiontothepositiveandnegativeofthecomponents. 6>.Strictlyprohibitshortcircuit. 7>.Installcomplexcomponentspreferentially. 8>.Makesureallcomponentsareinrightdirectionandrightplace. 9>.Pleasewearanti-staticglovesoranti-staticwristbandswheninstalling electroniccomponents. 10>.UsermustinstalltheLEDaccordingtothespecifiedrules.Otherwisesome LEDwillnotlight. 11>.Itisstronglyrecommendedtoreadtheinstallationmanualbeforestarting installation!!! IX.InstallationSteps(Pleasebepatientinstall!!!): 1>.Step1:Install2pcs20KohmMetalFilmResistoratR1,R3.Identifytheresistor valueasshownincolor. 2>.Step2:Install2pcs470ohmMetalFilmResistoratR4,R5.Identifytheresistor valueasshownincolor. 3>.Step3:Install1pcs2MohmMetalFilmResistoratR2.Identifytheresistor valueasshownincolor. 4>.Step4:Install1pcsDIP-6ICCD4017atU1.Thereisamark(notch)ononeend oftheICandthereisamark(curvedsilkscreenprinting)onPCBwheretheICcan placeon.Thesetwomarksarecorrespondingtoeachotherandareusedtospecify theinstallationdirectionoftheIC. 5>.Step5:Identifythepositive(anode)andnegative(cathode)leadofLED.The leadsoftheLEDmustbeinstalledcorrectly,otherwisetheLEDcannotbeturned on.Herearefourmethodsasfollowing: 5.1>.AccordingtothelengthoftheLEDleadtodistinguish.Thelongerpinis positive(anode)lead.Theshorterpinisnegative(cathode)lead. 5.2>.Identifythenegative(cathode)oftheLEDistolookintotheplasticcase whereonecanseethatthenegative(cathode)ismuchthicker/biggerinsidethe plasticcasethantheanodelead. 5.3>.Identifybyedgeofplasticcase.Thenegative(cathode)leadoftheLED shouldbethepinnearesttheflatontheplasticcase. 5.4>.Testby3Vbatteryormultimeter.Thepinispositive(anode)leadwhich hasconnecttothepositiveof3VifLEDcanlightupafterconnect3Vpower supply.(LEDshouldnotbepowereddirectlyfromthe3Vforashorttime:lessthen 0.5second) 5.5>.Itispositive(anode)wherethewhitemark“+”pointingtoonPCB. 6>.Step6:Install10pcs5mmRGBLEDatD1-D10.Payattentiontodistinguish betweenpositiveandnegativeatStep5andBendtheLEDpins. 7>.Step7:Install1pcsTO-92S9014TransistoratQ1.Payattentiontothe installationdirection.Arcscreenprintingcorrespondstoarccase. 8>.Step8:Install1pcs9*7mmMICMicrophoneatMK1.Pleasedistinguish betweenpositiveandnegative.Note:Themarkedpinisnegativepole. 9>.Step9:Install1pcs1uFElectrolyticCapacitoratC3.Thereisawhite‘+’on PCBsilkscreenprintingwherethepositive(anode)caninsertinto.Thelongerleadis positive(anode). 10>.Step10:Install1pcs5mmRGBLEDatD11.Payattentiontodistinguish betweenpositiveandnegativeatStep5. 11>.Step11:Install1pcs100uFElectrolyticCapacitoratC2.Thereisawhite‘+’ onPCBsilkscreenprintingwherethepositive(anode)caninsertinto.Thelongerlead ispositive(anode) 12>.Step12:InstalltheextrapinsfromLEDatJ1-J3. 13>.Step13:Install1pcs15cm2PinPH2.0Wireon‘+’and‘-’.Redwireconnect to’+’andblackwireconnectto‘-’.Thencutwhitesocket.Thesetwowiresareused toconnectBluetoothaudiocontrollerandLEDboard.Refertothewiringlocationand notethePCBmarkshownifthewireisinanothercolor! 14>.Step14:Tearofftheprotectivefilmonacrylicsurface. 15>.Step15:Fix2pcsM3*8CopperPillarand2pcsM3*6mmScrewonacrylic panelthatisthebaseforLEDBoard. 16>.Step16:FixRGBLEDBoardonCopperPillarby2pcsM3*6mmScrew. 17>.Step17:KnowBluetoothaudiocontroller:Interfacefunctionintroduction. 18>.Step18:KnowBluetoothaudiocontroller:Wiringdiagram. 19>.Step19:FixBluetoothaudiocontrolleronacrylicpanelby2pcsM3*10mm Screwand2pcsM3Nut. 20>.Step20:ConnectfromLEDboardtoBluetoothaudiocontroller.Note:The wiresneedconnecttopads.‘5V’connectto‘+’;‘GND’connectto‘-’ 21>.Step21:Install2pcs15cm2PinPH2.0Wireon2pcs4ohm3WSpeaker.The speakersdoesnotneedtodistinguishbetweenpositiveandnegativepoles. 22>.Step22:Fixspeakerontheothertwoaresmalleracrylicpanelby8pcs M3*10mmScrewand8pcsM3Nut. 23>.Step23:Fix1pcsDC-022PowerSocketbythebiggestnutonacrylicpanel. …

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(Wuhan Ding Tong Sheng Technology Co., Ltd) (September 5, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BCRK-GY19298) [Wuhan Ding Tong Sheng 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. Sincerely, (Applicant signature) (Applicant printed name) Meiling Xu (Wuhan Ding Tong Sheng Technology Co., Ltd) (September 5, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BCRK-GY19298) [Wuhan Ding Tong Sheng Technology 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) Meiling Xu

Wuhan Ding Tong Sheng Technology Co., Ltd (September 5, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Meiling Xu Title: /

Wuhan Ding Tong Sheng Technology Co., Ltd Model Difference Data：September 8, 2023 Product description: Bluetooth transmitter module Model name: GY19298, GY19288, GY20950-2, GY20996-3, GY21146-2, GY21108-2 Trade Name: MiOYOOW FCC ID: 2BCRK-GY19298 All the model are the same circuit and RF module, except model names . Regards Sincerely Client’s signature : Client’s name / title : Meiling Xu（/） Contact information / address：guanggudadao3hao; jiguanggongchengshejizongbuerqiyanfalou06zhuang06danyuan15ceng5hao( Y564) Wuhan Hubei, 430073 China

Wuhan Ding Tong Sheng Technology Co., Ltd (September 8, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Bluetooth transmitter module / GY19298, GY19288, GY20950-2, GY20996-3, GY21146-2, GY21108-2 / FCC ID: 2BCRK-GY19298) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the 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 required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Signature: Name: Meiling Xu Title: /

External Photos

FCC ID LABEL: Label Location: FCC ID: 2BCRK-GY19298 Model No.: GY19298

Internal Photos ANT

Shenzhen CTB Testing Co., Ltd. FCC ID:2BCRK-GY19298 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. EDR: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 3.066 2.03 3±1 4.00 2.51 <5 0.77860 3.00 YES 2.441 3 2.00 3±1 4.00 2.51 <5 0.78490 3.00 YES 2.480 2.595 1.82 2±1 3.00 2.00 <5 0.62843 3.00 YES 2.402 3.812 2.41 3±1 4.00 2.51 <5 0.77860 3.00 YES 2.441 3.889 2.45 3±1 4.00 2.51 <5 0.78490 3.00 YES 2.480 3.482 2.23 3±1 4.00 2.51 <5 0.79114 3.00 YES 2.402 4.339 2.72 4±1 5.00 3.16 <5 0.98020 3.00 YES 2.441 4.262 2.67 4±1 5.00 3.16 <5 0.98813 3.00 YES 2.480 3.821 2.41 3±1 4.00 2.51 <5 0.79114 3.00 YES GFSK π /4DQPSK 8DQPSK Conclusion: For the max result : 0.98813≤ FCC Limit 3.0 for 1g SAR.

Product specification Quick Reference Dat e Antenna module on the system board Frequency2.45GHz *1 Ant. Port Input Pwr . (dBm) 0 (Typ. BT class 2 output power) T ot. Rad. Pwr. (dBm) -2.3 (Input pwr – loss pwr) Peak EIRP(dBm ) 1.3 Directivity (dBi) 1 (all directio n antenna) Ef ficiency (dB) -2.3 (58.5%) Gain (dBi) 1 .7 Maxim um Power (dBm) 1.3 (XY-plane) Minim um Power (dBm) -4(XY-plane) A vg. Power (dBm) -0.5(XY-plane) Max/Min R atio (dB) 5.3(XY-plane) Max/A vg Ratio (dB) 1.8(XY-plane) Min/A vg Ratio (dB) -3.5(XY-plane) A verage Gain (dB) -0.5 (Avg Gain XY-plane) All the technical data and information contained herein are subject to change without prior notice Antenna layout on the Module board Antenna Gain Gain T able Unit in dBi @2.44GHz XY -plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module board 1.3 -0.5 1.7 -3.8 1.1 -3.0 58.5% Return Loss The Environment of Antenna Radiation Pattern 3D radiation pattern diagram XY-plane XZ-plane YZ-plane Manufacturer: Wuhan Ding Tong Sheng Technology Co., Ltd Manufacturer Address: guanggudadao3hao; jiguanggongchengshejizongbuerqiyanfalou06zhuang06danyuan15ceng5hao(Y564) Wu han Hubei, 430073 China

Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230829046RFX Report Tel: 4008-707-283Web: http://www.ctb-lab.net Page 1 of 58 TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: Bluetooth transmitter module FCC ID: 2BCRK-GY19298 Trademark: MiOYOOW Model Number: GY19298, GY19288, GY20950-2, GY20996-3, GY21146-2, GY21108-2 Prepared For: Wuhan Ding Tong Sheng Technology Co., Ltd Address: guanggudadao3hao; jiguanggongchengshejizongbuerqiyanfalou06zhuang06danyuan15ceng5hao(Y564) Wuhan Hubei, 430073 China Manufacturer: Wuhan Ding Tong Sheng Technology Co., Ltd Address: guanggudadao3hao; jiguanggongchengshejizongbuerqiyanfalou06zhuang06danyuan15ceng5hao(Y564) Wuhan Hubei, 430073 China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Aug. 16, 2023 Sample tested Date: Aug. 16, 2023 to Aug. 29, 2023 Issue Date: Aug. 29, 2023 Report No.: CTB230829046RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230829046RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 58 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 4 2. TEST SUMMARY ................................................................... 5 3. MEASUREMENT UNCERTAINTY ..................................................... 6 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 7 4.1 Product Information .................................................................... 7 4.2 Test Setup Configuration ............................................................... 7 4.3 Support Equipment .................................................................... 7 4.4 Channel List .......................................................................... 8 4.5 Test Mode ............................................................................ 8 4.6 Test Environment ...................................................................... 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 9 5.1 Test Facility ........................................................................... 9 5.2 Test Instrument Used .................................................................. 9 6. AC POWER LINE CONDUCTED EMISSION ............................................ 11 6.1 Block Diagram Of Test Setup .......................................................... 11 6.2 Limit ................................................................................ 11 6.3 Test procedure ....................................................................... 11 6.4 Test Result .......................................................................... 13 7. RADIATED SPURIOUS EMISSION ................................................... 15 7.1 Block Diagram Of Test Setup .......................................................... 15 7.2 Limit ................................................................................ 15 7.3 Test procedure ....................................................................... 16 7.4 Test Result .......................................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 26 8.1 Block Diagram Of Test Setup .......................................................... 26 8.2 Limit ................................................................................ 26 8.3 Test procedure ....................................................................... 26 8.4 Test Result .......................................................................... 27 9. COUDUCTED PEAK OUTPUT POWER ............................................... 34 9.1 Block Diagram Of Test Setup .......................................................... 34 9.2 Limit ................................................................................ 34 9.3 Test procedure ....................................................................... 34 9.4 Test Result .......................................................................... 35 10. 20DB OCCUPIED BANDWIDTH...................................................... 39 10.1 Block Diagram Of Test Setup ......................................................... 39 10.2 Limit ............................................................................... 39 10.3 Test procedure ...................................................................... 39 10.4 Test Result ......................................................................... 39 11. CARRIERFREQUENCIES SEPARATION .............................................. 43 11.1 Block Diagram Of Test Setup ......................................................... 43 11.2 Limit ............................................................................... 43 11.3 Test procedure ...................................................................... 43 11.4 Test Result ......................................................................... 43 12. HOPPING CHANNEL NUMBER ..........................................…

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Radiated Emission Below 1G Above 1G Conducted emissions