2BVI3-60704Sound

HOT FOCUS,INC Section 2.911(d)(5)(i) Certification – Equipment Type Company name: HOT FOCUS,INC Address: 4471 State St., Montclair, California 91763, United States Product Name: Sound FCC ID: 2BVI3-60704 Model(s): 60704VA, 60704KP 2.911(d)(5)(i) Equipment Type We, [HOT FOCUS,INC] certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Signature: Name: Tiffany Lo Date: 2026-08-31 Title and Company name: Manager and HOT FOCUS,INC NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

HOT FOCUS,INC Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: HOT FOCUS,INC Address: 4471 State St., Montclair, California 91763, United States Product Name: Sound FCC ID: 2BVI3-60704 Model(s): 60704VA, 60704KP 2.911(d)(5)(ii) Applicant filing We, [HOT FOCUS,INC] certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Signature: Name: Tiffany Lo Date: 2026-08-31 Title and Company name: Manager and HOT FOCUS,INC NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

HOT FOCUS,INC * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BVI3-60704 FRN of applicant: 0038249181 Per section 2.911(d)(7) of the FCC rules, HOT FOCUS,INC certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: HOT FOCUS,INC FCC Registration Number (FRN): 0038249181 Physical U.S. Company Address: 4471 State St., Montclair, California 91763, United States Contact Person: Tiffany Lo Agent Email Address: [email protected] Telephone No: 909-391-3818 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Signed: Printed name: Tiffany Lo Title: Manager Company Name: HOT FOCUS,INC Date: 8/31/2026 Agent Signed: Signed: Printed name: Tiffany Lo Title: Manager Company Name: HOT FOCUS,INC Date: 8/31/2026

Differences Declaration To whom concern, We company HOT FOCUS,INC hereby declares: The product models 60704VA, 60704KP are identical in the same PCB layout, interior structure and electrical circuits, The differences are appearance color and model name for commercial purpose. Authorized signature: Date: 2026-08-31

Agent Authorization Company name: HOT FOCUS,INC Address: 4471 State St., Montclair, California 91763, United States Product Name: Sound Model(s): 60704VA, 60704KP We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2026-08-31 Name: Tiffany Lo Title: Manager Company: HOT FOCUS,INC

< HOT FOCUS,INC > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD21046 Date: 2026-08-31 Subject; Request for Long Term Confidentiality FCC ID: 2BVI3-60704 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description Pursuant to Public Notice DA 04-1705 of the Commission' s policy, in order to comply with the marketing regulations in 47 CFT §2.803 and the importation rules in 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Tiffany Lo Title: Manager

FCC ID: 2BVI3-60704 RF Exposure evaluation According to 447498 D04 Interim General RF Exposure Guidance v01 ERP/EIRP = P T +G T −L C ERP/EIRP is the equivalent (or effective) radiated power [in same units as P T , typically dBW, dBm, or power spectral density (psd)], relative to either a dipole antenna (ERP) or an isotropic antenna (EIRP). P T is the transmitter output power, in dBW, dBm, or psd (power over a specified reference bandwidth). G T is the gain of the transmitting antenna, in dBd (ERP) or dBi (EIRP). L C is the signal attenuation in the connecting cable between the transmitter and the antenna, in dB. For BT EDR mode Frequency (MHz) Output power (dBm) Ant gain(dBi) EIRP (dBm) EIRP (mw) ERP (dBm) ERP (mw) Distance (cm) P th (mW) 2441 2.87 -0.58 2.29 1.69 0.14 1.03 0.5 2.8 ERP = EIRP −2.15 dB WORSE CASE 1.69mW<2.8mW Remark: Then SAR evaluation is not required

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Horizontal Vertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -1.26174 -30.0801 -7.18716 2450 -0.765802 -36.5604 -7.48023 2500 -0.585582 -22.0315 -6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Report No.: GTS2026070135F01 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 1 of 46 1. Bandwidth 1.1 Test Result 1.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.871 / Pass 2441 DH5 1 0.872 / Pass 2480 DH5 1 0.870 / Pass π/4-DQPSK SISO 2402 2DH5 1 1.146 / Pass 2441 2DH5 1 1.146 / Pass 2480 2DH5 1 1.151 / Pass 8-DPSK SISO 2402 3DH5 1 1.140 / Pass 2441 3DH5 1 1.143 / Pass 2480 3DH5 1 1.144 / Pass 1.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.933 / Pass 2441 DH5 1 0.932 / Pass 2480 DH5 1 0.932 / Pass π/4-DQPSK SISO 2402 2DH5 1 1.231 / Pass 2441 2DH5 1 1.244 / Pass 2480 2DH5 1 1.246 / Pass 8-DPSK SISO 2402 3DH5 1 1.254 / Pass 2441 3DH5 1 1.252 / Pass 2480 3DH5 1 1.248 / Pass Report No.: GTS2026070135F01 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 46 1.2 Test Graph 1.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 46 GFSK_DH5_HCH_2480MHz_Ant1_NTNV π/4-DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 46 π/4-DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV π/4-DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 5 of 46 8-DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8-DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 6 of 46 8-DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 7 of 46 1.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 8 of 46 GFSK_DH5_HCH_2480MHz_Ant1_NTNV π/4-DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 9 of 46 π/4-DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV π/4-DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 10 of 46 8-DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8-DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 11 of 46 8-DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Report No.: GTS2026070135F01 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 12 of 46 2. Maximum Conducted Output Power 2.1 Test Result Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 2.34 <=30 Pass 2441 DH5 2.83 <=30 Pass 2480 DH5 2.85 <=30 Pass π/4-DQPSK SISO 2402 2DH5 2.36 <=20.97 Pass 2441 2DH5 2.87 <=20.97 Pass 2480 2DH5 2.86 <=20.97 Pass 8-DPSK SISO 2402 3DH5 2.33 <=20.97 Pass 2441 3DH5 2.81 <=20.97 Pass 2480 3DH5 2.81 <=20.97 Pass Report No.: GTS2026070135F01 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 13 of 46 3. Carrier Frequency Separation 3.1 Test Result Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.022 0.933 >=0.933 Pass π/4-DQPSK SISO HOPP 2DH5 0.979 1.246 >=0.831 Pass 8-DPSK SISO HOPP 3DH5 1.003 1.254 >=0.836 Pass 3.2 Test Graph GFSK_DH5_HOPP_Ant1_NTNV Report No.: GTS2026070135F01 Global Unit…

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Global United Technology Services Co., Ltd. Report No.: GTS2026070135F01 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. Page 1 of 35 TEST REPORT Applicant: HOT FOCUS,INC Address of Applicant: 4471 State St., Montclair, California 91763, United States Manufacturer: HOT FOCUS,INC Address of Manufacturer: 4471 State St., Montclair, California 91763, United States Equipment Under Test (EUT) Product Name: Sound Model No.: 60704VA, 60704KP Trade Mark: Hot Focus FCC ID: 2BVI3-60704 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: July 07, 2026 Date of Test: July 24, 2026-August 31, 2026 Date of report issued: August 31, 2026 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTS2026070135F01 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 35 2 Version Version No. Date Description 00 August 31, 2026 Original Tested By: Date: August 31, 2026 Test Engineer Prepared By: Date: August 31, 2026 Project Engineer Check By: Date: August 31, 2026 Reviewer Report No.: GTS2026070135F01 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 35 3 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 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 .................................................................................................................................... 7 5.7 TEST LOCATION ................................................................................................................................. 7 5.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 7 6 TEST INSTRUMENTS LIST ..................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1 ANTENNA REQUIREMENT ................................................................................................................... 10 7.2 CONDUCTED EMISSIONS ................................................................................................................... 11 7.3 CONDUCTED PEAK OUTPUT POWER .................................................................................................. 14 7.4 20DB EMISSION BANDWIDTH ............................................................................................................ 15 7.5 CARRIER FREQUENCIES SEPARATION ................................................................................................ 16 7.6 HOPPING CHANNEL NUMBER ............................................................................................................ 17 7.7 DWELL TIME ..................................................................................................................................... 18 7.8 SPURIOUS EMISSION IN NON-RESTRICTED & RESTRICTED BANDS ....................................................... 19 7.8.1 Conducted Emission Method ..................................................................................................... 19 7.8.2 Radiated Emission Method ........................................................................................................ 20 8 TEST SETUP PHOTO ............................................................................................................................ 35 9 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 35 Report No.: GTS2026070135F01 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 896…

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