H38-RABT-ATS2819Bluetooth Module

User manual of Bluetooth module (RABT_ATS2819) 1. Introduction RABT_ATS2819 as an intelligent wireless audio data transmission product which is developed by our company with low-cost & high-efficiency stereo RF transmission solution applied. It owns high-quality sound ,wide compatibility and optimized overall performance based on Build-in ATS2819 chip used. Due to Drive-free mode applied in RABT_ATS2819, it is very quickly for user to realize the wireless transmission of music and enjoy music only when the module connected to user’s device, power on and connect the buttons. 2．Application Fields As main usage of the BT device is to transmit music in short distance. It is easy to be connected to laptops, mobile phones, PDAs and other digital products by BT so that to realize the wireless transmission of music. 3．Feather BT type: RABT BT spec: Bluetooth V5.0 Compatible version: V5.0/V4.2/V4.2 LE/V4.0/V3.0/V2.1 + EDR Operating current 30mA Standby current <0.4mA Operating voltage: 3.3v—4.5v Temperature range: -40ºC to +80ºC Communication distance： 10 meters Sensitivity： -88dBm(typical) Frequency range： 2.4GHz-2.480GHz External interface： GPIO, SPI，USB，Speaker ，Microphone Audio performance: High acoustic fidelity sound Audio SNR：75dB THD 0.01% Measurement:25.0*19.0*1.0 mm 4、Dimension drawing of module： 5、Pin layout of module 6、Pin’s function description Pin# Description 1 ADC12 2 GPIO25 3 GPIO26 4 GPIO0 5 GPIO1 6 GPIO2 7 GPIO19 8 GPIO12 9 GPIO13 10 GPIO3 11 VCC-BAT 12 PGND 13 GPIO10 14 GPIO11 15 DGND 16 GPIO47 17 L-IN-0 18 L-IN-1 19 R-IN-0 20 R-IN-1 21 DGND 22 L-OUT 23 R-OUT 24 GPIO24 25 GPIO23 26 GPIO22 27 GPIO21 28 GPIO20 29 GPIO6 30 GPIO8 31 GPIO9 32 GPIO5 33 GPIO7 34 GPIO4 35 DGND 7、Schematic Host manufacturer is responsible for compliance of the host system with module installed with all other applicable requirements for the system such as Part 15 B,.Host manufacturer is strongly recommended to confirm compliance with FCC requirements for the transmitter when the module is installed in the host. Labelling The proposed label format is to be placed on the module. If it is not visible when the module is installed into the system, “Contains FCC ID: H38-RABT-ATS2819” shall be placed on the outside of final host system. FCC Part l5 Statement NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the Federal Communications Commission (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 to radio 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. Changes or modifications to this equipment not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with Part 15 of the FCC rules. Operation is subject to the following two 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. Privacy of communications may not be ensured when using this device.

TCB Authority to Act as Agent Number: MS-0045317 Revision: 0 Effective date: Oct 8, 2021 Page 1 of 1 SEIKAKU TECHNICAL GROUP LIMITED Authority to Act as Agent Date: 2023-05-05 TUV Rheinland of North America, Inc. 1279 Quarry Lane., Suite. A Pleasanton, CA 94566 To Whom It May Concern: I appoint TÜV Rheinland (Shenzhen) Co., Ltd. to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the FCC or Industry Canada’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with SEIKAKU TECHNICAL GROUP LIMITED Offshore Chambers, P.O. Box 217 Apia, Samoa. For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Date: ___2023-05-05________________ Agreement is valid for 12 months from the above date. By: __________________________ Henry lee (Signature) (Print name) _ Manager +86 0769-83371865 (Title) (Telephone) On behalf of: SEIKAKU TECHNICAL GROUP LIMITED (Company Name)

Number: 44715 Revision: 1 Effective date: Sep 12, 2022 MS-0044715 Page 1 of 1 Revision 1 Legal Scope: Global Business Scope: Cross Business Process Scope: Cross Process SEIKAKU TECHNICAL GROUP LIMITED Date: 2023-02-06 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Confidentiality Request for FCC ID: H38-RABT-ATS2819 Pursuant to FCC 47 CRF 0.457(d), the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagrams Short Term n/a External Photo Short Term Permanent Internal Photos *** Short Term Permanent Operation Description/Theory of Operation Short Term Permanent Schematics Short Term Permanent Test Setup*** Short Term Permanent Tune-Up Procedure Short Term Permanent User’s Manual*** Short Term Permanent Part List/ Antenna Construction SEIKAKU TECHNICAL GROUP LIMITED has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. (*** Exceptional case for Permanent Confidentiality for these Exhibits by PAG only) Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. Sincerely, By: ________________________ ______ Henry Lee_ (Signature/Title) (Print name) Tel: 086 0769-83371865 Email: [email protected]

Dear Application Examiner; SEIKAKU TECHNICAL GROUP LIMITED is seeking full modular approval for module. The radio meets the requirements for modular approval as detailed in FCC 15.212. Compliance to each of the requirements is described below; 1. “The radio elements must have the radio frequency circuitry shielded” Yes, the modular transmitter has shield. 2. “The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal” Yes, the modular transmitter has buffered modulation/data inputs ensure compliance with Part 15 under conditions of excessive data rates or over-modulation. All inputs are buffered through logic or microprocessor inputs. 3. “The module must contain power supply regulation on the module” Yes, the modular transmitter has its own power supply regulation in the form of a low drop-out regulator providing 3.3V supply voltage to the board independently if the board is powered by the on-board battery or an external source. 4. “The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per §§ 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b)” Yes, Antenna permanently attached. 5. “The module must demonstrate compliance in a stand-alone configuration” Yes, the module complies to Part 15 in a stand-alone configuration 6. “The module must be labelled with its permanently affixed FCC ID label” Yes, the modular transmitter is labelled with its own FCC ID number. Because the modular transmitter may be installed inside another device, rendering its own label invisible, the integration guide of the modular transmitter informs that the host device must visibly display the necessary text (Contains FCC ID: H38-RABT-ATS2819) on the outside of the finished product. 7. “The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee” Yes, the module is compliant with all applicable FCC rules. Instructions for maintaining compliance are given in the integration guide. 8. “The module must comply with RF exposure requirements” Yes, the module is compliant with all applicable RF exposure requirements. Please see RF Exposure Report. By: __________________________ Henry lee (Signature) (Print name) _ Manager +86 0769-83371865 (Title) (Telephone) On behalf of: SEIKAKU TECHNICAL GROUP LIMITED (Company Name)

External View 1 External View 2

Label and location：

Internal View 1 Internal View 2

Safety Human Exposure 1.1 Radio Frequency Exposure Compliance 1.1.1 Electromagnetic Fields RESULT: Pass Report No. : CN23XF25 002 Test item : Bluetooth module Identification / Type No. : RABT_ATS2819 FCC ID : H38-RABT-ATS2819 Test standard : CFR47 FCC Part 2: Section 2.1093 CFR47 FCC Part 1: Section 1.1310 KDB 447498 D01 General RF Exposure Guidance v06 Stand-alone SAR evaluation: Operating Mode *Max. conducted Power incl. tune-up Distance (mm) Threshold power (mW) Verdict (dBm) (mW) BDR&EDR 2.50 1.8 5 10 Pass BLE 0.00 1.0 * refer to CN23XF25 001 for power data. Conclusion: SAR test is exempted.

Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 1 of 30 Appendix C: Test Results of Bluetooth Low Energy APPENDIX C: TEST RESULTS OF BLUETOOTH LOW ENERGY...........................................................................................1 APPENDIX C.1: TEST RESULTS OF CONDUCTED POWER SPECTRAL DENSITY......................................................................................2 APPENDIX C.2: TEST RESULTS OF 6DB BANDWIDTH....................................................................................................................4 APPENDIX C.3: TEST RESULTS OF 99% BANDWIDTH....................................................................................................................6 APPENDIX C.4: TEST RESULTS OF CONDUCTED SPURIOUS EMISSIONS MEASURED IN 100 KHZ BANDWIDTH.........................................8 Band Edge.....................................................................................................................................................................8 Conducted Spurious Emission.......................................................................................................................................9 APPENDIX C.5: TEST RESULTS OF RADIATED SPURIOUS EMISSIONS..............................................................................................13 30 MHz - 1GHz............................................................................................................................................................13 1GHz - 18GHz..............................................................................................................................................................15 APPENDIX C.6: TEST RESULTS OF RADIATED EMISSIONS IN RESTRICTED BANDS..............................................................................27 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 2 of 30 Appendix C.1: Test Results of Conducted Power Spectral Density TestModeAntennaChannelResult[dBm/3-100kHz]Limit[dBm/3kHz]Verdict 2402-17.59≤8.00PASS 2440-17.36≤8.00PASS BLE_1MAnt1 2480-16.80≤8.00PASS BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 3 of 30 BLE_1M_Ant1_2480 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 4 of 30 Appendix C.2: Test Results of 6dB Bandwidth TestModeAntennaChannelDTS BW [MHz]FL[MHz]FH[MHz]Limit[MHz]Verdict 24020.7042401.7802402.4840.5PASS 24400.5522439.8242440.3760.5PASS BLE_1MAnt1 24800.6642479.7922480.4560.5PASS BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 5 of 30 BLE_1M_Ant1_2480 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 6 of 30 Appendix C.3: Test Results of 99% Bandwidth TestModeAntennaChannelOCB [MHz]FL[MHz]FH[MHz]Limit[MHz]Verdict 24021.04032401.61482402.6551---PASS 24401.05242439.61212440.6645---PASS BLE_1MAnt1 24801.03272479.62732480.6600---PASS BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 7 of 30 BLE_1M_Ant1_2480 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 8 of 30 Appendix C.4: Test Results of Conducted Spurious Emissions Measured in 100 kHz Bandwidth Band Edge TestModeAntennaChNameChannelRefLevel[dBm]Result[dBm]Limit[dBm]Verdict Low2402-0.49-31.72≤-20.49PASS BLE_1MAnt1 High2480-2.60-34.05≤-22.60PASS BLE_1M_Ant1_High_2402 BLE_1M_Ant1_High_2480 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 9 of 30 Conducted Spurious Emission TestModeAntennaChannel FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict Reference-4.14-4.14---PASS 30~1000-4.14-48≤-24.14PASS 2402 1000~26500-4.14-38.77≤-24.14PASS Reference-3.50-3.50---PASS 30~1000-3.50-48.08≤-23.5PASS 2440 1000~26500-3.50-39.42≤-23.5PASS Reference-2.37-2.37---PASS 30~1000-2.37-47.7≤-22.37PASS BLE_1MAnt1 2480 1000~26500-2.37-38.87≤-22.37PASS Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 10 of 30 BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 11 of 30 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 BLE_1M_Ant1_2440_1000~26500 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 12 of 30 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 BLE_1M_Ant1_2480_1000~26500 Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 13 of 30 Appendix C.5: Test Results of Radiated Spurious Emissions Note: 1)This testing was carried out on different modulations, but only the worst case was presented in this report. 2)Testing was carried out within frequency range 9kHz to the tenth harmonics. The measurement results below 30MHz and above 18GHz were greater than 20dB below the limit, so only the radiated spurious emissions from 30MHz to 18GHz were reported. 30 MHz - 1GHz EUT Information EUT Name:Bluetooth module Model:RABT_ATS2819 Test Mode:BLE 1M_Mid channel Order No/Sample No:168389208/A003324744-001 Test Voltage:DC 3.3V Remark:Temp 22 Humi:52% Test Standard:FCC 15.247 Tested By:Kei Zhang Reviewed By:Terry Yin 0 10 20 30 40 50 60 70 80 30M 5060 80100M200300400500 8001G L e v e l i n d B μ V / m Frequency in Hz Critical_Freqs Frequency (MHz) MaxPeak (dBμV/m) Limit (dBμV/m) Margin (dB) Height (cm) PolAzimuth (deg) Corr. (dB/m) 63.41650026.8040.0013.20100.0H302.0-19.7 168.03100031.0843.5012.42100.0H234.0-21.3 287.00150027.3046.0018.70100.0H332.0-16.6 417.95150029.9046.0016.10100.0H347.0-13.5 624.07650030.1846.0015.82100.0H281.0-9.5 995.15000036.8454.0017.16100.0H202.0-3.8 Final_Result Frequency (MHz) QuasiPeak (dBμV/m) Limit (dBμV/m) Margin (dB) Height (cm) PolAzimuth (deg) Corr. (dB/m) --------------------- Prüfbericht - Produkte Test Report - Products Appendix C CN23XF25 001 Page 14 of 30 EUT Information EUT Name:Bluetooth …

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Prüfbericht - Produkte Test Report - Products Prüfbericht-Nr.: Test report no.: CN23XF25 001 Auftrags-Nr.: Order no.: 168389208 Seite 1 von 24 Page 1 of 24 Kunden-Referenz-Nr.: Client reference no.: N/A Auftragsdatum: Order date: 2022-09-02 Auftraggeber: Client: SEIKAKU TECHNICAL GROUP LIMITED Offshore Chambers, P.O. Box 217 Apia, Samoa Prüfgegenstand: Test item: Bluetooth module Bezeichnung / Typ-Nr.: Identification / Type no.: RABT_ATS2819 Auftrags-Inhalt: Order content: Test Report Prüfgrundlage: Test specification: FCC CFR Title 47, Part 15, Subpart C, Section 15.247 Wareneingangsdatum: Date of sample receipt: 2022-09-09 Prüfmuster-Nr.: Test sample no: A003324744-001 Prüfzeitraum: Testing period: 2022-11-21 – 2023-01-13 Ort der Prüfung: Place of testing: TÜV Rheinland (Shenzhen) Co., Ltd. Prüflaboratorium: Testing laboratory: TÜV Rheinland (Shenzhen) Co., Ltd. Prüfergebnis*: Test result*: Pass Please refer to Photo Document geprüft von: tested by: genehmigt von: authorized by: Datum: Date: 2023-05-09 Ausstellungsdatum: Issue date: 2023-05-09 Stellung / Position: Project ManagerStellung / Position:Reviewer Sonstiges / Other: FCC ID: H38-RABT-ATS2819 Zustand des Prüfgegenstandes bei Anlieferung: Condition of the test item at delivery: Prüfmuster vollständig und unbeschädigt Test item complete and undamaged * Legende:1 = sehr gut2 = gut3 = befriedigend4 = ausreichend5 = mangelhaft P(ass) = entspricht o.g. Prüfgrundlage(n)F(ail) = entspricht nicht o.g. Prüfgrundlage(n) N/A = nicht anwendbarN/T = nicht getestet * Legend:1 = very good2 = good3 = satisfactory4 = sufficient5 = poor P(ass) = passed a.m. test specification(s)F(ail) = failed a.m. test specification(s)N/A = not applicableN/T = not tested Dieser Prüfbericht bezieht sich nur auf das o.g. Prüfmuster und darf ohne Genehmigung der Prüfstelle nicht auszugsweise vervielfältigt werden. Dieser Bericht berechtigt nicht zur Verwendung eines Prüfzeichens. This test report only relates to the a. m. test sample. Without permission of the test center this test report is not permitted to be duplicated in extracts. This test report does not entitle to carry any test mark. TÜV Rheinland (Shenzhen) Co., Ltd. 1601 R&D Room, 1602-1604, 17-18F, Building 7 Site C, Vanke Cloud City Phase I, Xingke First Street, Xili Street, Xili Community, Nanshan District, Shenzhen 518052, P.R. China Mail: [email protected] · Web: www.tuv.com jjj Prüfbericht - Produkte Test Report - Products Prüfbericht - Nr.: Test Report No.: CN23XF25 001 Seite 2 von 24 Page 2 of 24 Test Summary 5.1.1ANTENNA REQUIREMENT RESULT:Pass 5.1.2MAXIMUM PEAK CONDUCTED OUTPUT POWER RESULT:Pass 5.1.3CONDUCTED POWER SPECTRAL DENSITY RESULT:Pass 5.1.46DB BANDWIDTH RESULT:Pass 5.1.599% BANDWIDTH RESULT:Pass 5.1.620DB BANDWIDTH RESULT:Pass 5.1.7CARRIER FREQUENCY SEPARATION RESULT:Pass 5.1.8NUMBER OF HOPPING FREQUENCY RESULT:Pass 5.1.9TIME OF OCCUPANCY RESULT:Pass 5.1.10CONDUCTED SPURIOUS EMISSIONS MEASURED IN 100 KHZ BANDWIDTH RESULT:Pass 5.1.11RADIATED SPURIOUS EMISSION RESULT:Pass Prüfbericht - Produkte Test Report - Products Prüfbericht - Nr.: Test Report No.: CN23XF25 001 Seite 3 von 24 Page 3 of 24 Contents 1GENERAL REMARKS..........................................................................................................................4 1.1COMPLEMENTARY MATERIALS............................................................................................................4 2TEST SITES........................................................................................................................................5 2.1TEST FACILITIES................................................................................................................................5 2.2LIST OF TEST AND MEASUREMENT INSTRUMENTS................................................................................5 2.3TRACEABILITY...................................................................................................................................6 2.4CALIBRATION.....................................................................................................................................6 2.5MEASUREMENT UNCERTAINTY............................................................................................................6 2.6LOCATION OF ORIGINAL DATA............................................................................................................6 2.7STATUS OF FACILITY USED FOR TESTING............................................................................................6 3GENERAL PRODUCT INFORMATION.....................................................................................................7 3.1PRODUCT FUNCTION AND INTENDED USE............................................................................................7 3.2RATINGS AND SYSTEM DETAILS..........................................................................................................7 3.3INDEPENDENT OPERATION MODES......................................................................................................9 3.4NOISE GENERATING AND NOISE SUPPRESSING PARTS........................................................................9 3.5SUBMITTED DOCUMENTS....................................................................................................................9 4TEST SET-UP AND OPERATION MODES..............................................................................................10 4.1PRINCIPLE OF CONFIGURATION SELECTION.......................................................................................10 4.2TEST OPERATION AND TEST SOFTWARE...........................................................................................10 4.3SPECIAL ACCESSORIES AND AUXILIARY EQUIPMENT.........................................................................10 4.4COUNTERMEASURES TO ACHIEVE EMC COMPLIANCE.......................................................................10 4.5TEST SETUP DIAGR…

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Prüfbericht - Produkte Test Report - Products Appendix A CN23XF25 001 Page 1 of 2 Appendix A: Photographs of the Test Set-Up APPENDIX A: PHOTOGRAPHS OF THE TEST SET-UP.......................................................................................................1 PHOTOGRAPH 1: SET-UP PHOTO FOR RADIATED SPURIOUS EMISSION, BELOW 1GHZ..........................................................................2 PHOTOGRAPH 2: SET-UP PHOTO FOR RADIATED SPURIOUS EMISSION, ABOVE 1GHZ..........................................................................2 Prüfbericht - Produkte Test Report - Products Appendix A CN23XF25 001 Page 2 of 2 Photograph 1: Set-up photo for Radiated Spurious Emission, Below 1GHz Photograph 2: Set-up photo for Radiated Spurious Emission, Above 1GHz