2A6P9-APIDCar Stereo

Promaster Electronic LLC 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Sect ion 2.911(d)(5)(i) Certification – Equipment Type Company name: Promaster Electronic LLC Address: 25275 Budde Rd. Suite 31, Spring, TX, 77380, US Product Name: : Car Stereo FCCID:2A6P9-APID Model(s): APID-302,APID-401,725,H110M 2.911(d)(5)(i) Equipment Type We, [Promaster Electronic LLC] (“the applicant”) 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 s incerely, Name:Antonio Lopez Date:2026/07/17 Title and Company name: President/ Promaster Electronic LLC NOTE 1 “Covered L ist ”; 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

Promaster Electronic LLC 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.9 11(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Promaster Electronic LLC Address: 25275 Budde Rd. Suit e 31, Spring, TX, 77380, US Product Name: : Car Stereo FCCID:2A6P9-APID Model(s): APID-302,APID-401,725,H110M 2.911(d)(5)(ii) Applicant filing We, [Promaster Electronic LLC] (“the applicant”) c ertify 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 t his chapter, as an entity producing covered communications equipment. Yours s incerely, Name: Antonio Lopez Date:2026/07/17 Title and Company name: President/ Promaster Electronic LLC 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

Promaster Electronic LLC U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: Promaster Electronic LLC Address: 25275 Budde Rd. Suite 31, Spring, TX, 77380, US FRN: 0032356586 Contact Name:Antonio Lopez Tel.: (832) 813-5123 Email: [email protected] This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Da te: 2026.7.17 Signed by (Printed Name/Title): Antonio Lopez/President The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Promaster Electronic LLC Grantee Code: 2A6P9 FCC ID: 2A6P9-APID Contact Name: Antonio Lopez Street Address: 25275 Budde Rd. Suite 31, Spring, TX, 77380, US Telephone No: (832) 813-5123 Email: [email protected] FRN: 0032356586 Applicant Signature: Date: 2026-07- 17 Signed by (Printed Name/Title): Antonio Lopez/President

Promaster Electronic LLC Letter of Authorization Company name: Promaster Electronic LLC Address: 25275 Budde Rd. Suite 31, Spring, TX, 77380, US Product Name: : Car Stereo FCCID:2A6P9-APID Model(s): APID-302,APID-401,725,H110M 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: 2026/07/17 Name: Antonio Lopez Title: President Company: Promaster Electronic LLC

Declaration on model difference We The main model and subsequent models tested in this test differ only in naming. All other aspects, including materials, other manufacturing processes, circuit design, and manufacturers, are exactly the same. We finally decided on the APID-302 as the test model. FCCID:2A6P9-APID Production name Trade name Model no. Car Stereo N/A APID-302,APID-401,725,H110M Signature: Date: 2026/07/17 Name: Antonio Lopez Title: President Company: Promaster Electronic LLC

Promaster Electronic LLC Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026/07/17 Subject; Request for Confidentiality FCC ID: 2A6P9-APID 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 In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 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: Antonio Lopez Title: President

FCC ID:2A6P9-APID RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500- 100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500- 100000 -- -- 1 30 11.1 Friis transmission formula: Pd= (Pout*G)\ (4*pi*R 2 ) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in mW G= Numeric gain of the antenna relative to isotropic antenna Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm 2 ,If we know the maximum gain of the nd total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. RF Exposure Information: The radiated output power of this device meets the limits of FCC/IC radio frequency exposure limits.This device should be operated with a minimum separation distance of 20cm between the equipment and a person's body. 11.2 Measurement Result BLE Antenna :6.16dBi Measured power (dBm) Tune-up power (dBm) Max tune- up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2 ) Power density Limits (mW/cm2 ) 3.23 2 to 4 4 4.13 0.002 1 BT Antenna :6.16dBi Measured power (dBm) Tune-up power (dBm) Max tune- up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2 ) Power density Limits (mW/cm2 ) 8.15 7 to 9 9 4.13 0.006 1 WIFI 2.4G Antenna :6.16dBi Measured power (dBm) Tune-up power (dBm) Max tune- up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2 ) Power density Limits (mW/cm2 ) 15.23 14 to 16 16 4.13 0.033 1 WIFI 5G Antenna :7.12dBi Measured power (dBm) Tune-up power (dBm) Max tune- up power (dBm) Antenna Gain Numeric Evaluation result (mW/cm2 ) Power density Limits (mW/cm2 ) 14.33 13 to 15 15 5.15 0.032 1 This confirmed that the device comply with FCC 1.1310 MPE limit.

产品规格书 2400-2500MHz/5150MHz-5850MHz 2026-6-12 A10 邹杨辰 ..................................................................................... ..................................................................................... ............................................................................. ................................................................................. ........................................................................ ............................................................................. .................................................................. 电性能指标ElectricalSpecifications 频率范围FrequencyRange（MHz） 2400-2500/5150-5850 输入阻抗InputImpendence(Ω) 50 频带宽度Bandwidth（MHz） 100/700 电压驻波比VSWR ＜2 增益Gain（dBi） 极化形式PolarizationTyp 2.4G:6.41dbi5.8G:7.12dbi e线极化 机械指标MechanicalSpecifications 连接器型号ConnectType 工作温度OperatinTemp(°C) 储存温度StoringTemp(°C IPEX -40～85 ) -40～85 天线颜色ChassisColor黑色 电缆Cable RFΦ1.13线长150mm

No.：BCTC/KJ-RF-ICT-001 Page 1 of 45 Edition：B.1 TEST REPORT Shenzhen BCTC Technology Co., Ltd. Report No.: BCTC2606210895-1E Applicant: Promaster Electronic LLC Product Name: Car Stereo Test Model: APID-302 Tested Date: 2026-06-12 to 2026-07-30 Issued Date: 2026-07-31 Report No.: BCTC2606210895-1E No.：BCTC/KJ-RF-ICT-001 Page 2 of 45 Edition：B.1 FCC ID:2A6P9-APID 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 BCTC 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. Product Name: Car Stereo Trademark: N/A Model/Type Ref.: APID-302,APID-401,725,H110M Prepared For: Promaster Electronic LLC Address: 25275 Budde Rd. Suite 31, Spring, TX, 77380, US Manufacturer: SHENZHEN TAIHUA WORLD ELECTRONICS CO.,LTD Address: 4F, Blog.A , No. 4 , Xinyuan Gongye 2nd Rd.,Pinghu,LongGang Dist.,Shenzhen, China 518100 Prepared By: Shenzhen BCTC Technology Co., Ltd. Address: Room 101M, Unit 1, Building1, Pengyuan, No.18, Lilang Road, Shanglilang, Nanwan Subdistrict, Longgang District, Shenzhen, Guangdong, China. Sample Received Date: 2026-06-12 Sample tested Date: 2026-06-12 to 2026-07-30 Report No.: BCTC2606210895-1E Test Standards: FCC Part15.247 ANSI C63.10-2020 Test Results: PASS Remark: This is Bluetooth BLE radio test report. Prepared by : Reviewer by : Approved by: Louis Zeng Mike Zheng Sewen Guo Report No.: BCTC2606210895-1E No.：BCTC/KJ-RF-ICT-001 Page 3 of 45 Edition：B.1 Table of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 14 6.1 Block Diagram Of Test Setup .............................................................................. 14 6.2 Limit .................................................................................................................... 14 6.3 Test procedure .................................................................................................... 14 6.4 EUT Operating Conditions .................................................................................. 14 6.5 Test Result ............................................................................................................ 15 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 20 8. Radiated Band Emission Measurement and Restricted Bands Of Operation ...... 24 8.1 Block Diagram Of Test Setup .............................................................................. 24 8.2 Limit .................................................................................................................... 24 8.3 Test Procedure ................................................................................................... 25 8.4 EUT Operating Conditions .................................................................................. 25 8.5 Test Result .......................................................................................................... 26 9. Power Spectral Density Test ............................................................................... 27 9.1 Block Diagram Of Test Setup .............................................................................. 27 9.2 Limit .................................................................................................................... 27 9.3 Test procedure .................................................................................................... 27 9.4 EUT Operating Conditions .................................................................................. 27 9.5 Test Result .......................................................................................................... 28 10. Bandwidth Test .......................…

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No.：BCTC/KJ-RF-ICT-001 Page 1 of 78 Edition：B.1 TEST REPORT Shenzhen BCTC Technology Co., Ltd. Report No.: BCTC2606210895-3E Applicant: Promaster Electronic LLC Product Name: Car Stereo Test Model: APID-302 Tested Date: 2026-06-12 to 2026-07-30 Issued Date: 2026-07-31 Report No.: BCTC2606210895-3E No.：BCTC/KJ-RF-ICT-001 Page 2 of 78 Edition：B.1 FCC ID:2A6P9-APID 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 BCTC 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. Product Name: Car Stereo Trademark: N/A Model/Type Reference: APID-302,APID-401,725,H110M Prepared For: Promaster Electronic LLC Address: 25275 Budde Rd. Suite 31, Spring, TX, 77380, US Manufacturer: SHENZHEN TAIHUA WORLD ELECTRONICS CO.,LTD Address: 4F, Blog.A , No. 4 , Xinyuan Gongye 2nd Rd.,Pinghu,LongGang Dist.,Shenzhen, China 518100 Prepared By: Shenzhen BCTC Technology Co., Ltd. Address: Room 101M, Unit 1, Building1, Pengyuan, No.18, Lilang Road, Shanglilang, Nanwan Subdistrict, Longgang District, Shenzhen, Guangdong, China. Sample Received Date: 2026-06-12 Sample Tested Date: 2026-06-12 to 2026-07-30 Report No.: BCTC2606210895-3E Test Standards: FCC Part15.247 ANSI C63.10-2020 Test Results: PASS Remark: This is WIFI-2.4GHz band radio test report. Prepared by : Reviewer by : Approved by: Louis Zeng Mike Zheng Sewen Guo Report No.: BCTC2606210895-3E No.：BCTC/KJ-RF-ICT-001 Page 3 of 78 Edition：B.1 Table of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information and Test Setup ...................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 14 6.1 Block Diagram Of Test Setup .............................................................................. 14 6.2 Limit .................................................................................................................... 14 6.3 Test procedure .................................................................................................... 14 6.4 EUT operating Conditions ................................................................................... 14 6.5 Test Result .......................................................................................................... 15 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT Operating Conditions .................................................................................. 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement and Restricted Bands Of Operation ...... 26 8.1 Block Diagram Of Test Setup .............................................................................. 26 8.2 Limit .................................................................................................................... 26 8.3 Test procedure .................................................................................................... 27 8.4 EUT Operating Conditions .................................................................................. 27 8.5 Test Result .......................................................................................................... 28 9. Power Spectral Density Test ............................................................................... 30 9.1 Block Diagram Of Test Setup .............................................................................. 30 9.2 Limit .................................................................................................................... 30 9.3 Test procedure .................................................................................................... 30 9.4 EUT Operating Conditions .................................................................................. 30 9.5 Test Result .......................................…

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