2AY39WT-04Bluetooth Audio Transmitter

User manual Bluetooth Audio Transmitter WT-04 What’s inside the box WT-04 Bluetooth Transmitter USB-A to Type-C Right Angle Converter Quick Start Guide About WT-04 WT-04 adopts advanced CSR8670 chip with apt-X low latency function. It's no need to install driver and license, plug and play. This device can be plugged into USB port of non-Bluetooth USB digital audio output devices, and pair with Bluetooth headphone and Bluetooth speaker. So this can achieve wireless transmission, in addition, it can be connected to two Bluetooth headphones or Bluetooth speakers simultaneously, allow you to enjoy movie and football matches with your lover and won’t disturb your family. Corresponding system The system that can output USB digital audio like Windows / Mac OS / iOS / Android / PS3 / PS4 / PS4 Pro / Nintendo Switch / USB-A / USB-C (OTG) / Micro-USB (OTG) Pairing connection  Pair with Bluetooth devices like Bluetooth headphone / speaker etc, please make sure your Bluetooth headset / speaker is in pairing mode and is disconnected from other Bluetooth transmitting devices like smartphone / iPad.  Plug WT-04 into PC, then press the button for 3 seconds until you see the LED indicator of TX is flashing blue rapidly, it will automatically search and pair with one Bluetooth device. When this product has successfully paired with Bluetooth device, the flashing LED indicator turns to solid blue. WT-04 can identify Bluetooth device codec, corresponding codec “SBC / APTX / LL” will automatically display, the corresponding green LED indicator will be long bright at this time.  If you want to pair with the second Bluetooth device, keep connecting with the first one, and press the button for 3 seconds until you see the LED indicator of TX is flashing blue rapidly, it will automatically search and pair with the second Bluetooth device. When WT-04 was pairing with two Bluetooth devices at the same time, for details of the Bluetooth device corresponding codec identification, please refer to “Display of codec LED indicator” on the right.  Pair again with your Bluetooth devices that have been paired, make sure your Bluetooth devices are in pairing mode, and plug WT-04 into PC, the LED indicator of TX flashes slowly, at this time WT-04 will automatically pair with up to two Bluetooth devices that have been paired. When WT-04 was pairing with one Bluetooth device, just make sure the second Bluetooth device that have been paired is in pairing mode, WT-04 will automatically pair with it. Initialization reset In the power on state, please long press WT-04 button for 10 seconds, and the rapid flashing TX LED indicator will pause temporarily, then immediately continue to flash rapidly. Initialization reset is complete at this time. Precautions  When pairing with two Bluetooth headsets, only one headset microphone can be used.  Please note the codec display of WT-04 when pairing with two Bluetooth devices.  Because the USB jack on the TV is almost the input interface, it can’t output audio, so this product is unavailable on the TV.  If WT-04 can not pair with Bluetooth device, please try to initialize both Bluetooth devices and WT-04, then pair them again.  If use it on Android smartphone, please set the output of smartphone to OTG. Not all Android smartphones support OTG output.  When you want to pair WT-04 with Bluetooth headset / speaker, please make sure Bluetooth headset / speaker is not pairing with other Bluetooth transmitter like smartphone / iPad. Display of codec LED indicator  When pairing with one Bluetooth device, WT-04 LED indicator display status Paired device codec SBC APTX LL WT-04 LED indicator display status Pic 2 Pic 3 Pic 4  When pairing with two Bluetooth devices at the same time , WT-04 LED indicator display status Paired device codec SBC+SBC SBC+APTX SBC+LL APTX+APTX APTX+LL LL+LL WT-04 LED indicator display status Pic 2 Pic 2 Pic 2 Pic 3 Pic 3 Pic 4  "LL" in above and below is an abbreviation for aptx Low Latency.  When pairing with one device, based on the device codec, the corresponding green LED indicator will light.  When pairing with two devices, based on the lowest codec, the corresponding lowest codec green LED indicator will light, and the codec of transmitting acoustic signal also becomes the lowest codec.  For two identical codecs, the corresponding green LED indicator will light. TX (blue LED indicator） Pic 1 TX (blue LED indicator） Pic 2 SBC (green LED indicator） TX (blue LED indicator） Pic 3 TX (blue LED indicator） Pic 4 LL (green LED indicator） APTX (green LED indicator） Specifications Net Weight: 4.8 g Dimension: 0.7 * 1 .63* 0 .31 inch Casing Materials: Plastic Corresponding Codec: aptx-Low latency / aptx / SBC Support Bluetooth Format: A2DP / AVRCP Channels: 2.0 Bluetooth Version: Bluetooth 5.0 Frequency Response: 2.402 ~ 2.480GHz Microphone: Support microphone wireless communication Operating Voltage: 4 .5 ~ 5.5V (Power supply directly from USB / PC / PS4 etc.) Bluetooth Signal Effective Distance: Up to 33 feet Operating Temperature: 0°C ~ 45°C Reiyin shall not be held liable for any technical or user interface discrepancies in this manual. The Reiyin WT owner’s manual may be subject to change without prior notice. Check out www.reiyin.com/support for the latest version of the Reiyin WT owner’s manual. Acoustic setting  After insert WT-04 into the USB jack of Windows PC, its hardware will be recognized automatically by system.  If manual setting is necessary, please set [Playback Device] to [REIYIN Bluetooth Audio WT04].  It is necessary to manually set after insert WT-04 into the USB jack of Mac computer. a) Go to [System Preferences], choose [Sound]. b) Choose the [Output] tab, select [REIYIN Bluetooth Audio WT04].  After insert WT-04 into the USB jack of PS4, please set with this route, [Settings] → [Devices] → [Audio Devices] →[Output to Headphones] → [All Audio]. Please also mark [Switch Output Device Automatically] on the same screen. For screen detailed …

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ReiyinTechnologyco.,Limited Modeldifferences We: ReiyinTechnologyco.,LimitedStatementthatAllthemodel “ WT-04,WT-03,WT-HD05,WT-HD06, WT-01 ” areidenticalexceptmodelname.AllabovemodelsareidenticalinthesamePCBlayout,interior structureandelectricalcircuits.Theonlydifferenceismodelnameforcommercialpurpose. CityandCountry:Date:Name: (thismustbeaperson) Function:Signature: (orofficialcompanystamp) Zhuhai2021/02/24TimChenManager

C5266091_X8_Ed.1 1/1 LetterofAuthorization <ReiyinTechnologyco.,Limited> Company:ReiyinTechnologyco.,Limited Address:B04ANo.103,HuaweiRoad,XiangzhouDist,Zhuhai, Guangdong,China ProductName:BluetoothAudioTransmitter ModelNumber:WT-04,WT-03,WT-HD05,WT-HD06,WT-01 FCCIdentifier:2AY39WT-04 WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:TimChenDate:2021-02-24 Title:Manager Signatureofapplicant:

C5266091_X10_Ed.1 1/1 ReiyinTechnologyco.,Limited B04ANo.103,HuaweiRoad,XiangzhouDist,Zhuhai,Guangdong,China Date:2021.02.24 Subject:RequestforConfidentiality FCCID:2AY39WT-04 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo BlockDiagram Schematics TestReportNoNo TestSetupPhotosNo User’sManualNoNo InternalPhotosNoNo PartsList/TuneUp RFExposureInfo OperationalDescription CoverLetter(s)NoNo SDRSoftware/SecurityInfoNo Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. Sincerely, Name:TimChenDate:2021.02.24 Title:Manager Signatureofapplicant:

FCCID:2AY39WT-04 EUT

FCCIDLABELINGANDLOCATION FCCIDLabel FCCIDLabelLocation Thelabelshownshallbepermanentlyaffixedataconspicuouslocationonthedeviceandbe readilyvisibletotheuseratthetimepurchase(Labelingrequirementsper2.925) BluetoothAudioTransmitter FCCID:2AY39WT-04

FCCID:2AY39WT-04 RFCHIP:Model:CSR8670Manufacturer:QUALCOMM PCBAntenna RFCHIP

Global United Technology Services Co., Ltd. Report No.: GTSL202102000052F01 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. + TEST REPORT Applicant: Reiyin Technology co.,Limited Address of Applicant: B04A No.103, Huawei Road, Xiangzhou Dist, Zhuhai, Guangdong, China Manufacturer: Reiyin Technology co.,Limited Address of Manufacturer: B04A No.103, Huawei Road, Xiangzhou Dist, Zhuhai, Guangdong, China Equipment Under Test (EUT) Product Name: Bluetooth Audio Transmitter Model No.: WT-04, WT-03, WT-HD05, WT-HD06,WT-01 Trade Mark: FCC ID: 2AY39WT-04 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.249 Date of sample receipt: Feb. 22, 2021 Date of Test: Feb. 22, 2021 ~ Mar. 01, 2021 Date of report issued: Mar. 02, 2021 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202102000052F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 33 2 Version Version No. Date Description 00 Mar. 02, 2021 Original Prepared By: Date: Mar. 02, 2021 Project Engineer Check By: Date: Mar. 02, 2021 Reviewer Report No.: GTSL202102000052F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 33 3 Contents Page 1 COVER PAGE .............................................................................................................................................1 2 VERSION ...................................................................................................................................................2 3 CONTENTS ...............................................................................................................................................3 4 TEST SUMMARY ......................................................................................................................................4 4.1 MEASUREMENT UNCERTAINTY .............................................................................................................4 5 GENERAL INFORMATION .......................................................................................................................5 5.1 GENERAL DESCRIPTION OF EUT ..........................................................................................................5 5.2 TEST MODE .........................................................................................................................................7 5.3 DESCRIPTION OF SUPPORT UNITS ........................................................................................................7 5.4 DEVIATION FROM STANDARDS ..............................................................................................................7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ....................................................................................7 5.6 TEST FACILITY ....................................................................................................................................8 5.7 TEST LOCATION ..................................................................................................................................8 5.8 ADDITIONAL INSTRUCTIONS ..................................................................................................................8 6 TEST INSTRUMENTS LIST ......................................................................................................................9 7 TEST RESULTS AND MEASUREMENT DATA .....................................................................................11 7.1 ANTENNA REQUIREMENT ....................................................................................................................11 7.2 CONDUCTED EMISSIONS ....................................................................................................................12 7.3 RADIATED EMISSION METHOD ............................................................................................................15 7.3.1 Field Strength of The Fundamental Signal ..................................................................................17 7.3.2 Spurious emissions .....................................................................................................................18 7.4 20DB OCCUPY BANDWIDTH ...............................................................................................................24 8 TEST SETUP PHOTO .............................................................................................................................27 9 EUT CONSTRUCTIONAL DETAILS .......................................................................................................29 Report No.: GTSL202102000052F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 33 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203 Pass AC Power Line Conducted Emission 15.207 Pass Field strength of the fundamental signal 15.249 (a) Pass Spurious emissions 15.249 (a) (d)/15.209 Pass Band edge 15.249 (d)/15.205 Pass 20dB Occupied Bandwidth 15.215 (c) Pass Pass: The EUT complies with the essential requirements in…

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FCCID:2AY39WT-04 CE RE