2BC9Z-65Keyboard

(HUIZHOU LJ TECH LTD) (June 28, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BC9Z-65) [HUIZHOU LJ TECH LTD] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, (Applicant signature) (Applicant printed name) Yilong Wang (HUIZHOU LJ TECH LTD) (June 28, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BC9Z-65) [HUIZHOU LJ TECH LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Yilong Wang

HUIZHOU LJ TECH LTD (June 28, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Keyboard / LUMINKEY 65 / FCC ID: 2BC9Z-65) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Yilong Wang Title: manager

HUIZHOU LJ TECH LTD (June 28, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Yilong Wang Title: manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 Model: LUMINKEY 65 External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 4

FCC ID LABEL: Label Location: FCC ID: 2BC9Z-65 Model No.: LUMINKEY 65

Shenzhen CTB Testing Co., Ltd. FCC ID:2BC9Z-65 Portable device According to §15.247(e)(i) and §1.1307(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. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 1.049 1.27 1±1 2.00 1.58 <5 0.49127 3.00 YES 2.44 1.339 1.36 1±1 2.00 1.58 <5 0.49514 3.00 YES 2.480 0.53 1.13 0±1 1.00 1.26 <5 0.39651 3.00 YES GFSK Conclusion: For the max result : 0.49514≤ FCC Limit 3.0 for 1g SAR.

1、技术指标(TechnicalSpecification) 电性能指标Electrical Sp ecifications 频率范围Fr equency Range（MHz） 2400-2500 频带宽度Bandwidth (-10dB)（MHz）≥100 输入阻抗 Input Impedance （Ω） 50 电压驻波比 VSW R (max at all of frequency range) ＜ 1.8 增益 Gain (@2.45GHz max) （ dBi ） 0.338 极化形式Polarization Type 雷电保护Lightning Protection 功率容量Power Capacity（mW） 1000 机械指标 Mechanical Sp ecifications 辐射体 Radiator 铜 Cuprum 连接器型号Connect Type - 工作温度Working Temperature（°C） -40~85 存储温度St orage Temperature（°C） -40~125 外壳颜色 Radome Color- 沉金 重量 Weigh t （ g ） - Linear polarization DC ground Immersion gold Manufacturer: HUIZHOU LJ TECH LTD Address: No.9, Building D3, Taihong Industrial Park, No.3 Longshan Sixth Road, Daya Bay, Huizhou China 2. 天线尺寸 Antenna size XYPlane XZPlane YZPlane

TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. 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 CTB Testing 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. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: Keyboard FCC ID: 2BC9Z-65 Trademark: LUMINKEY Model Number: LUMINKEY 65 Prepared For: HUIZHOU LJ TECH LTD Address: No.9, Building D3, Taihong Industrial Park, No.3 Longshan Sixth Road, Daya Bay, Huizhou China Manufacturer: HUIZHOU LJ TECH LTD Address: No.9, Building D3, Taihong Industrial Park, No.3 Longshan Sixth Road, Daya Bay, Huizhou China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Jun. 11, 2024 Sample tested Date: Jun. 11, 2024 to Jun. 21, 2024 Issue Date: Jun. 21, 2024 Report No.: CTB240621046RFX Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240621046RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 35 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................................................................................... 3 2. TEST SUMMARY ............................................................................................................................. 4 3. MEASUREMENT UNCERTAINTY ................................................................................................... 5 4. PRODUCT INFORMATION AND TEST SETUP ............................................................................. 6 4.1 Product Information ............................................................................................................................ 6 4.2 Test Setup Configuration ................................................................................................................... 6 4.3 Support Equipment ............................................................................................................................ 6 4.4 Channel List ....................................................................................................................................... 7 4.5 Test Mode .......................................................................................................................................... 7 4.6 Test Environment ............................................................................................................................... 7 5. TEST FACILITY AND TEST INSTRUMENT USED ......................................................................... 8 5.1 Test Facility ........................................................................................................................................ 8 5.2 Test Instrument Used ......................................................................................................................... 8 6. AC POWER LINE CONDUCTED EMISSION .................................................................................. 10 6.1 Block Diagram Of Test Setup ........................................................................................................... 10 6.2 Limit .................................................................................................................................................. 10 6.3 Test procedure ................................................................................................................................. 10 6.4 Test Result ....................................................................................................................................... 12 7. RADIATED SPURIOUS EMISSION ............................................................................................... 14 7.1 Block Diagram Of Test Setup ........................................................................................................... 14 7.2 Limit .................................................................................................................................................. 14 7.3 Test procedure ................................................................................................................................. 15 7.4 Test Result ....................................................................................................................................... 16 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ................................................ 23 8.1 Block Diagram Of Test Setup ........................................................................................................... 23 8.2 Limit .................................................................................................................................................. 23 8.3 Test procedure ................................................................................................................................. 23 8.4 Test Result ....................................................................................................................................... 24 9. COUDUCTED OUTPUT POWER .................................................................................................. 26 9.1 Block Diagram Of Test Setup ..............................................…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 2 Model: LUMINKEY 65 Radiated Emission Below 1G Above 1G Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 2 Conducted emissions