2BTBM-UA1515W RGB Air Tube Light

* 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. SC6065009 U.S. Agent Designation for Service of Process - Certification Attestation Letter 7/3/2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2BTBM-UA15 FRN of applicant: 0037673738 Per section 2.911(d)(7) of the FCC rules, Shenzhen VIJIM Technology Co., Ltd. FRN:0037673738(“the applicant”) certifies that the equipment for which authorization is sought is designated to thefollowing U.S. agent* for service of process: Company Name: Global Product Services and Consultation LLC FCC Registration Number (FRN): 0033406703 Physical U.S. Company Address: 328 W Palm Ave. Monrovia, CA91016 Contact Person: Michael Chan Tel: +1 626 366 4358 Agent Email Address: [email protected] 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:Agent Signed (if different from Applicant): Signed: Printed name: Jianguo Chen Title: Manager Company Name: Shenzhen VIJIM Technology Co., Ltd. Date: 7/3/2026 Signed: Printed name: Michael Chan Title: Technical Director Company Name: Global Product Services and Consultation LLC Date: 7/3/2026

External Photographs View of EUT-1 View of EUT-2 Page 2 of 5 View of EUT-3 View of EUT-4 Page 3 of 5 View of EUT-5 View of EUT-6 Page 4 of 5 View of EUT-7 View of EUT-8 Page 5 of 5 View of EUT-9

Internal Photographs Internal View of EUT-1 Internal View of EUT-2 Page 2 of 3 Internal View of EUT-3 Internal View of EUT-4 ANT Page 3 of 3 Internal View of EUT-5 Internal View of EUT-6

RF EXPOSURE EVALUATION EUT Specification EUT 15W RGB Air Tube Light Model Number UA15 Series Model / Model Difference / FCC ID 2BTBM-UA15 Antenna gain (Max) 2.1dBi Operation Frequency 2402 MHz to 2480 MHz Power Supply DC 12V Battery 7.4V Classification Per Stipulated Test Standard ß15.247(i), ß2.1093 Modulation GFSK Max. output power -0.1dBm (0.9772mW) Test Requirement: According to ß15.247(i) and ß1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Routine SAR evaluation refers to that specifically required by ß2.1093, using Page 2 of 2 measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT. The minimum separation distance is 5mm. Measurement Result BLE: Transmit Frequency (MHz) Mode Measured Power (dBm) Tune up Power (dBm) Max tune up power (dBm) Calculation Result 1-g SAR 2402 BLE 1M -0.1 0±1 1 0.3965 3 Signature: Alan He Date: 2026-6-17

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For 15W RGB Air Tube Light MODEL NUMBER: UA15 REPORT NUMBER: E04A26050884F00101 ISSUE DATE: June 17, 2026 FCC ID: 2BTBM-UA15 Prepared for Shenzhen VIJIM Technology Co.,Ltd. A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Street, Longgang District, Shenzhen Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26050884F00101 Page 2 of 41 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 June 17, 2026 Initial Issue REPORT NO.: E04A26050884F00101 Page 3 of 41 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.1.2 FCC Part 15.247 (b)(3) Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.2 FCC Part 15.247 (a)(2) Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.2 FCC Part 15.247 (e) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: 1. For ISED, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to < CFR 47 FCC PART 15 SUBPART C, ISED RSS-247 Issue 4> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26050884F00101 Page 4 of 41 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. CHANNEL LIST ........................................................................................................ 8 5.3. MAXIMUM CONDUCTED OUTPUT POWER ........................................................... 9 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 9 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ........................................................... 9 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................... 9 5.8. SETUP DIAGRAM .................................................................................................. 10 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 11 7. ANTENNA PORT TEST RESULTS ..................................................................................... 13 7.1. Conducted Output Power ........................................................................................ 13 7.2. 6dB Bandwidth and 99% Occupied Bandwidth ....................................................... 14 7.3. Power Spectral Density ........................................................................................... 16 7.4. Conducted Band edge and spurious emission ........................................................ 17 7.5. Duty Cycle .............................................................................................................. 19 8. RADIATED TEST RESULTS ............................................................................................... 20 8.1. Radiated Band edge and Spurious Emission .......................................................... 26 9. ANTENNA REQUIREMENT ................................................................................................ 36 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 38 11. TEST DATA - APPENDIX A ................................................................................... 41 REPORT NO.: E04A26050884F00101 Page 5 of 41 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: Shenzhen VIJIM Technology Co.,Ltd. Address: A1705, Building A, Galaxy World, No.1 Yabao Road, Bantian Street, Longgang District, Shenzhen Manufacturer Information Company Name: Shenzhen VIJIM Technology Co.,Ltd. Address: A1705, Building A, Galaxy World, No.1 Yabao Road, …

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PCBAntennaforBLEChipsofWCH 1、DimensionofAntenna Manufacturer:NanjingQinhengMicroelectronicsCo.,Ltd. Description:2.4GHzPCBAntennaforCH32V208 2、Features Dimension:5.6*12.3mm Terminalimpedance:50ohm MaxGain:2.1dBi RFFrequency:2.4GHz 3 、 Sparameter Workingbandwidth:157MHz S11：[email protected] 4 、 GainandRadiationpattern 2.4GHz: Eplane ： Hplane ： 2.44GHz： Eplane： Hplane： 2.48GHz: Eplane ： Hplane ：

Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT BLE 1M 2402 Ant1 18.14 7.41 8.85 NVNT BLE 1M 2440 Ant1 18.09 7.42 8.85 NVNT BLE 1M 2480 Ant1 18.07 7.43 8.85 NVNT BLE 2M 2402 Ant1 11.65 9.34 13.7 NVNT BLE 2M 2440 Ant1 11.62 9.35 13.7 NVNT BLE 2M 2480 Ant1 11.54 9.38 13.79 2 / 32 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 3 / 32 Duty Cycle NVNT BLE 1M 2480MHz Ant1 Duty Cycle NVNT BLE 2M 2402MHz Ant1 4 / 32 Duty Cycle NVNT BLE 2M 2440MHz Ant1 Duty Cycle NVNT BLE 2M 2480MHz Ant1 5 / 32 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Limit Conducted(dBm) Verdict NVNT BLE 1M 2402 Ant1 -0.1 30 Pass NVNT BLE 1M 2440 Ant1 -0.58 30 Pass NVNT BLE 1M 2480 Ant1 -1.42 30 Pass NVNT BLE 2M 2402 Ant1 -0.14 30 Pass NVNT BLE 2M 2440 Ant1 -0.58 30 Pass NVNT BLE 2M 2480 Ant1 -1.43 30 Pass 6 / 32 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 7 / 32 Peak Power NVNT BLE 1M 2480MHz Ant1 Peak Power NVNT BLE 2M 2402MHz Ant1 8 / 32 Peak Power NVNT BLE 2M 2440MHz Ant1 Peak Power NVNT BLE 2M 2480MHz Ant1 9 / 32 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1M 2402 Ant1 0.549 0.5 Pass NVNT BLE 1M 2440 Ant1 0.618 0.5 Pass NVNT BLE 1M 2480 Ant1 0.554 0.5 Pass NVNT BLE 2M 2402 Ant1 0.72 0.5 Pass NVNT BLE 2M 2440 Ant1 0.897 0.5 Pass NVNT BLE 2M 2480 Ant1 0.646 0.5 Pass 10 / 32 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 11 / 32 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 -6dB Bandwidth NVNT BLE 2M 2402MHz Ant1 12 / 32 -6dB Bandwidth NVNT BLE 2M 2440MHz Ant1 -6dB Bandwidth NVNT BLE 2M 2480MHz Ant1 13 / 32 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT BLE 1M 2402 Ant1 0.992 NVNT BLE 1M 2440 Ant1 1.022 NVNT BLE 1M 2480 Ant1 1.004 NVNT BLE 2M 2402 Ant1 1.996 NVNT BLE 2M 2440 Ant1 2.019 NVNT BLE 2M 2480 Ant1 2.026 14 / 32 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 15 / 32 OBW NVNT BLE 1M 2480MHz Ant1 OBW NVNT BLE 2M 2402MHz Ant1 16 / 32 OBW NVNT BLE 2M 2440MHz Ant1 OBW NVNT BLE 2M 2480MHz Ant1 17 / 32 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT BLE 1M 2402 Ant1 -15.88 8 Pass NVNT BLE 1M 2440 Ant1 -15.87 8 Pass NVNT BLE 1M 2480 Ant1 -17.13 8 Pass NVNT BLE 2M 2402 Ant1 -18.71 8 Pass NVNT BLE 2M 2440 Ant1 -19.47 8 Pass NVNT BLE 2M 2480 Ant1 -19.95 8 Pass 18 / 32 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 19 / 32 PSD NVNT BLE 1M 2480MHz Ant1 PSD NVNT BLE 2M 2402MHz Ant1 20 / 32 PSD NVNT BLE 2M 2440MHz Ant1 PSD NVNT BLE 2M 2480MHz Ant1 21 / 32 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -38.38 -20 Pass NVNT BLE 1M 2480 Ant1 -38.71 -20 Pass NVNT BLE 2M 2402 Ant1 -33.73 -20 Pass NVNT BLE 2M 2480 Ant1 -38.86 -20 Pass 22 / 32 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission 23 / 32 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission 24 / 32 Band Edge NVNT BLE 2M 2402MHz Ant1 Ref Band Edge NVNT BLE 2M 2402MHz Ant1 Emission 25 / 32 Band Edge NVNT BLE 2M 2480MHz Ant1 Ref Band Edge NVNT BLE 2M 2480MHz Ant1 Emission 26 / 32 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -54.76 -20 Pass NVNT BLE 1M 2440 Ant1 -55.03 -20 Pass NVNT BLE 1M 2480 Ant1 -54.35 -20 Pass NVNT BLE 2M 2402 Ant1 -55.39 -20 Pass NVNT BLE 2M 2440 Ant1 -54.94 -20 Pass NVNT BLE 2M 2480 Ant1 -53.77 -20 Pass 27 / 32 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission 28 / 32 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission 29 / 32 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission 30 / 32 Tx. Spurious NVNT BLE 2M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 2M 2402MHz Ant1 Emission 31 / 32 Tx. Spurious NVNT BLE 2M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 2M 2440MHz Ant1 Emission 32 / 32 Tx. Spurious NVNT BLE 2M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 2M 2480MHz Ant1 Emission

Setup Photographs Radiated Band edge and Spurious Emission Page 2 of 2 Conducted emissions