2A7ZM-X6MICROPHONEALTO X6 microphone

2.SPEC Power voltage: DC 5V-9V Working current ＜80mA Frequency ：941.6MHz~945.8MHz STABILITY OF FREQUENCY :＜±10ppm FCC Statement 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Antenna description 1， Antenna description Antenna board Monopole antenna Model TX-Bu01S4 gain -9dbi Frequency range 941.00-951.00MHz Modulation method FM 2， Antenna view 3， Antenna radiation pattern Radiation [email protected] Angle 0 45 90 135 180 235 270 315 Attenuation values -15 -5 -8 -9 -20 -23 -15 -10

JBU GLOBAL LLC Add: 19416 NE 26th AVE,114B, Miami,Florida 33180 United States Date: 2022-8-20 FCC ID: 2A7ZM-X6MICROPHONE Dear Sir/Madam, We, JBU GLOBAL LLC Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: ALTO X6 microphone Model no.: ALTO X6 microphone,Allegro X8 microphone Sincerely, Name/Title： Issac Grunwald/Chief Operations Officer Company: JBU GLOBAL LLC Address: 19416 NE 26th AVE,114B, Miami,Florida 33180 United States Phone: 844 262 7464 Fax: N/A E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2022-8-20> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2A7ZM-X6MICROPHONE ALTO X6 microphone For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Issac Grunwald/Chief Operations Officer Company: JBU GLOBAL LLC Address: 19416 NE 26th AVE,114B, Miami,Florida 33180 United States Phone: 844 262 7464 Fax: N/A E-Mail: [email protected]

JBU GLOBAL LLC 19416 NE 26th AVE,114B, Miami,Florida 33180 United States Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2022-8-20 To whom it may concern: We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2A7ZM-X6MICROPHONE including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. By signing this application form, we agree to Eurofins’ current valid General Terms and Conditions (AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins.de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Issac Grunwald/Chief Operations Officer Company: JBU GLOBAL LLC Address: 19416 NE 26th AVE,114B, Miami,Florida 33180 United States Phone: 844 262 7464 Fax: N/A E-Mail: [email protected]

FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Photo 3 Appearance of EUT Photo 4 Appearance of EUT FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Photo 5 Appearance of EUT

FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Appendix IFCC ID Label Size for the label: 10mm X 8mm FCC ID: 2A7ZM-X6MICROPHONE FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Appendix II ID Label Location ID LOCATION

FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Appendix IV EUT Internal Photographs Photo 6 Internal of EUT Photo 7 Internal of EUT FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Photo 8 Internal of EUT Photo 9 Internal of EUT FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Photo 10 Appearance of PCB Photo 11 Appearance of PCB Ant. FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Photo 12 Appearance of PCB

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202206-0362-13 Page: 1 of 3 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 RF Exposure Evaluation FCC ID: 2A7ZM-X6MICROPHONE 1. Client Information Applicant : JBU GLOBAL LLC Address : 19416 NE 26th Ave, 114B, Miami, Florida 33180 Manufacturer : GUANGZHOU MIAOSHENG ELECTRONIC TECHNOLOGY Co., LTD Address : 1-2, second floor West Street Watermelon Ridge Dongguan village Xinya Street Huadu District, Guangzhou,China 2. General Description of EUT EUT Name : ALTO X6 microphone Model(s) : ALTO X6 microphone, Allegro X8 microphone Model Difference : All these models are identical in the same PCB layout and electrical circuit, the only difference is that names. Product Description : Operation Frequency: 941.6MHz~945.8MHz Number of Channel: 15 Channels Antenna Gain: -9dBi PCB Antenna Modulation Type: FM Power Rating : DC 3.0V by AA battery*2 Software Version : ---- Hardware Version : ---- Connecting I/O Port(S) : : Please refer to the User's Manual Remark: The antenna gain provided by the applicant, the adapter and verified for the RF conduction test and adapter provided by TOBY test lab. Note: More test information about the EUT please refer the RF Test Report. Report No.: TBR-C-202206-0362-13 Page: 2 of 3 TB-RF-074-1.0 The RF Exposure Evaluation for FCC: SAR Test Exclusion Calculations FCC: According to 447498 D04 Interim General RF Exposure Guidance v01. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold P th (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). P th is given by Formula (B.2). and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). The example values shown in Table B.2 are for illustration only. Table B.2—Example Power Thresholds (mW) Report No.: TBR-C-202206-0362-13 Page: 3 of 3 TB-RF-074-1.0 1. Calculation: Test separation: 5mm Frequency (MHz) Conducted Power (dBm) Turn-up Power Tolerance (dB) Max power of tune up tolerance (dBm) Max power of tune up tolerance (mW) Limit P th (mW) 941.6 -3.754 -3±1 -2 0.631 3 943.7 -3.764 -3±1 -2 0.631 3 945.8 -3.776 -3±1 -2 0.631 3 The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 D04, No SAR is required. Conclusion: The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06. -----END OF REPORT-----

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202206-0362-14 Page: 1 of 41 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Radio Test Report FCC ID: 2A7ZM-X6MICROPHONE Report No. : TBR-C-202206-0362-14 Applicant : JBU GLOBAL LLC Equipment Under Test (EUT) EUT Name : ALTO X6 microphone Model No. : ALTO X6 microphone Series Model No. : Allegro X8 microphone Brand Name : MASINGO Sample ID : 202206-0362-01 Receipt Date : 2022-07-27 Test Date : 2022-07-27 to 2022-08-25 Issue Date : 2022-08-25 Standards : FCC 47 CFR Part 74 FCC 47 CFR Part 2 Test Method : ANSI C63.26 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Witness Engineer : Camille Li Engineer Supervisor : Ivan Su Engineer Manager : Ray Lai This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202206-0362-14 Page: 2 of 41 TB-RF-074-1.0 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 5 1.1 Client Information ................................................................................................................. 5 1.2 General Description of EUT (Equipment Under Test) ................................................... 5 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 6 1.4 Description of Support Units .............................................................................................. 7 1.5 Description of Test Mode .................................................................................................... 7 1.6 Description of Test Software Setting ................................................................................ 8 1.7 Measurement Uncertainty .................................................................................................. 8 1.8 Test Facility ........................................................................................................................... 9 2. TEST SUMMARY ..................................................................................................................... 10 3. TEST SOFTWARE ................................................................................................................... 10 4. TEST EQUIPMENT .................................................................................................................. 11 5. MAXIMUM TRANSMITTER POWER ................................................................................... 12 5.1 Test Standard and Limit .................................................................................................... 12 5.2 Test Setup ........................................................................................................................... 12 5.3 Test Procedure ................................................................................................................... 12 5.4 Deviation From Test Standard ......................................................................................... 12 5.5 EUT Operating Mode ........................................................................................................ 12 5.6 Test Data ............................................................................................................................. 12 6. OCCUPIED BANDWIDTH ...................................................................................................... 13 6.1 Test Standard and Limit .................................................................................................... 13 6.2 Test Setup ........................................................................................................................... 13 6.3 Test Procedure ................................................................................................................... 13 6.4 Deviation From Test Standard ......................................................................................... 14 6.5 EUT Operating Mode ........................................................................................................ 14 6.6 Test Data ............................................................................................................................. 14 7. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 15 7.1 Test Standard and Limit .................................................................................................... 15 7.2 Test Setup ........................................................................................................................... 15 7.3 Test Procedure ................................................................................................................... 16 7.4 Deviation From Test Standard ......................................................................................... 17 7.5 EUT Operating Mode ........................................................................................................ 17 7.6 Test Data ............................................................................................................................. 17 8. EMISSION MASK(NECESSARY BANDWIDTH) ............................................................... 18 8.1 Test Standard and Limit .................................................................................................... 18 8.2 Test Setup ......................................…

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FCC ID: 2A7ZM-X6MICROPHONE TB-RF-074-3.0 Appendix V EUT Test Photographs 15C Test Setup Photo of Setup for Radiated Emission (Above 1 GHz) Photo of Setup for Radiated Emission (Below 1 GHz) -----END OF REPORT-----