2A4MQ-8011Mechanical Keyboard

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd.

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Application Details

Equipment Class: DTS - Digital Transmission System
Date of Grant: Sep 04, 2026
Application Purpose: Original Equipment
Equipment Note: Mechanical Keyboard
Frequency Range: 2402.00000000 - 2480.00000000
Company: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd.
Country: China

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

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Attestation Statements

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Covered Equipment Certification Attestation Letter 8/26/2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2A4MQ-8011 Jingheng Tengwei (Huizhou) Electronic Technology Co., 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. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List , the applicant should include an explanation on why the equipment is not “covered” equipment. Jingheng Tengwei (Huizhou) Electronic Technology Co., 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. Signed: Printed name: Chuangling Zhang Title: Manager Company Name: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Date: 8/26/2026

Attestation Statements

JinghengTengwei(Huizhou)ElectronicTechnologyCo.,Ltd. ReferenceNo.2026UL0263 1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:TTSMARKETINC. FRN:0036806057 ContactName:MaverickLim Address:1178BroadwaySte324,NewYork,NY10001,USA TelephoneNo:001-(646)305-2908 Email:[email protected] Applicant: Companyname:JinghengTengwei(Huizhou)ElectronicTechnologyCo.,Ltd. FRN:0031988330 Granteecode:2A4MQ FCCID:2A4MQ-8011 ContactName:ChuanglingZhang Address:No.8Minying1Road,YuanzhouTown,BoluoCounty,HuizhouCity, GuangdongProvince,China TelephoneNo:18576395720 FaxNo:0752-6396368 Email:[email protected] [JinghengTengwei(Huizhou)ElectronicTechnologyCo.,Ltd.]certifiesthat,as ofthedateofthisfilingoftheapplicationwiththeTCB,[TTSMARKETINC.]is ourdesignatedUSagentforserviceofprocessfortheabovereferencedFCCID. [JinghengTengwei(Huizhou)ElectronicTechnologyCo.,Ltd.]acceptsto maintainanagentfornolessthanoneyearafterthegranteehasterminatedall marketingandimportationortheconclusionofanycommissionrelated proceedinginvolvingequipment.[TTSMARKETINC.]accepts,asofthedateof thefilingoftheapplication,theobligationofthedesignatedUSagentforservice ofprocessfortheabovereferenceFCCID. TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. Date:2026/08/28 Applicant’sName:ChuanglingZhangUSAgent’sName:MaverickLim Title:ManagerTitle:Manager Signature:Signature

Cover Letter(s)

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. August 27, 2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: 2A4MQ-8011 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☐ Short Term Internal Photos ☐ Permanent* ☐ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☐ Short Term User’s Manual ☐ Permanent* ☐ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed : Printed name: Chuangling Zhang Title: Manager Company Name: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd.

Cover Letter(s)

Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Family Certification Attestation Letter 8/26/2026 Nemko Canada Inc 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2A4MQ-8011 Models: 8011, GT87, GASKETY TKL We hereby request Family Certification for the above-mentioned Models based on them being electrically, and physically identical apart from model name/number. Signed: Printed name: Chuangling Zhang Title: Manager Company Name: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Date: 8/26/2026

External Photos

External Photos M/N: 8011 External Photos M/N: 8011 External Photos M/N: 8011 External Photos M/N: 8011

Internal Photos

Internal Photos M/N: 8011 Internal Photos M/N: 8011 Internal Photos M/N: 8011 Bluetooth/ 2.4G SRD antenna Internal Photos M/N: 8011

RF Exposure Info

Page 1 of 3 Report No. ESTE-R2608159 FCC RF EXPOSURE REPORT Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Mechanical Keyboard Model Number: 8011 Additional Model: GT87, GASKETY TKL FCC ID:2A4MQ-8011 Applicant: Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Address: No.8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2608159 Date of Test: Jul. 20, 2026 to Aug. 17, 2026 Date of Report: Aug. 24, 2026 Page 2 of 3 Report No. ESTE-R2608159 1. Applicable Standards FCC Part 2(Section 2.1093) FCC KDB 447498 D04 Interim General RF Exposure Guidance v01 2. Exposure Evaluation of Portable or Mobile Devices Human exposure to RF emissions from portable devices (47 CFR §2.1093), as defined by the FCC, must be evaluated with respect to the FCC-adopted limits for SAR. Evaluation of mobile devices, as defined by the FCC, may also be performed with respect to SAR limits, but in such cases it is usually simpler and more cost-effective to evaluate compliance with respect to field strength or power density limits. For certain devices that are designed to be used in both mobile and portable configurations similar to those described in 47 CFR §2.1091(d)(4), such as certain desktop phones and wireless modem modules, compliance for mobile configurations is also satisfied when the same device is evaluated for SAR compliance in portable configurations. The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 300 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Page 3 of 3 Report No. ESTE-R2608159 3. Evaluation Results Mode CH Peak output Power （dBm） Antenna Gain (dBi) effective radiated power （dBm） Target power (dBm) Max. Target power (mW) SAR Test Exemption Limit (mW) BLE 1M 2402 1.15 2.59 1.59 1±1 1.585 2.72 2440 1.24 2.59 1.68 1±1 1.585 2.72 2480 1.63 2.59 2.07 2±1 1.995 2.72 BLE 2M 2402 1.19 2.59 1.63 1±1 1.585 2.72 2440 1.26 2.59 1.7 1±1 1.585 2.72 2480 1.7 2.59 2.14 2±1 1.995 2.72 For 2.4G SRD Field strength =86.11dBuV/m@3m P={10 [ (86.11/20) /10 6 *3] 2 /30 }*1000mW = 0.122496mW Pd=2.4x10^(-5)mW/cm2<1mW/cm2 Note: 1. Limited=3060*(0.5/20)^x, x=-log(60/(3060*√f)). 2. We choose f=2.48GHz (Highest frequency operate at bluetooth) to calculate MPE limit as higher frequency will have lower MPE limits. 3. SAR Test Exclusion Thresholds is 2.72mW for separation distance 5mm. Therefore, SAR test is not required. 4. The Bluetooth function and the 2.4G wireless function of the product cannot work simultaneously. End of Test Report

Test Report

Page 1 of 25 Report No.ESTE-R2608157 Appendix A: DTS Bandwidth Test Result TestMode Antenna Frequency[MHz] DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.675 2401.661 2402.336 0.5 PASS BLE_1M Ant1 2440 0.675 2439.658 2440.333 0.5 PASS BLE_1M Ant1 2480 0.681 2479.658 2480.339 0.5 PASS BLE_2M Ant1 2402 1.200 2401.376 2402.576 0.5 PASS BLE_2M Ant1 2440 1.200 2439.382 2440.582 0.5 PASS BLE_2M Ant1 2480 1.200 2479.376 2480.576 0.5 PASS Page 2 of 25 Report No.ESTE-R2608157 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Page 3 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS Page 4 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2480-PASS Page 5 of 25 Report No.ESTE-R2608157 Appendix B: Maximum conducted output power Test Result Peak TestMode Antenna Frequency[MHz] Conducted Peak Power[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 1.15 ≤30 PASS BLE_1M Ant1 2440 1.24 ≤30 PASS BLE_1M Ant1 2480 1.63 ≤30 PASS BLE_2M Ant1 2402 1.19 ≤30 PASS BLE_2M Ant1 2440 1.26 ≤30 PASS BLE_2M Ant1 2480 1.70 ≤30 PASS Test Graphs Peak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Page 6 of 25 Report No.ESTE-R2608157 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS Page 7 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS Page 8 of 25 Report No.ESTE-R2608157 Page 9 of 25 Report No.ESTE-R2608157 Appendix C: Maximum power spectral density Test Result TestMode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -16.66 ≤8.00 PASS BLE_1M Ant1 2440 -16.62 ≤8.00 PASS BLE_1M Ant1 2480 -16.07 ≤8.00 PASS BLE_2M Ant1 2402 -22.36 ≤8.00 PASS BLE_2M Ant1 2440 -22.55 ≤8.00 PASS BLE_2M Ant1 2480 -22.09 ≤8.00 PASS Page 10 of 25 Report No.ESTE-R2608157 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Page 11 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS Page 12 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2480-PASS Page 13 of 25 Report No.ESTE-R2608157 Appendix D: Reference level measurement Test Result TestMode Antenna Freq(MHz) Max.Point[MHz] Result[dBm] BLE_1M Ant1 2402 2402.00 0.26 BLE_1M Ant1 2440 2440.25 0.20 BLE_1M Ant1 2480 2480.00 0.71 BLE_2M Ant1 2402 2402.00 -0.25 BLE_2M Ant1 2440 2440.01 -0.25 BLE_2M Ant1 2480 2480.00 0.34 Page 14 of 25 Report No.ESTE-R2608157 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Page 15 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS Page 16 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2480-PASS Page 17 of 25 Report No.ESTE-R2608157 Appendix E: Band edge measurements Test Result TestMod e Antenn a ChNam e Frequency[MHz ] RefLevel[dBm ] Result[dBm ] Limit[dBm ] Verdic t BLE_1M Ant1 Low 2402 0.26 -39.06 ≤-19.74 PASS BLE_1M Ant1 High 2480 0.71 -40.15 ≤-19.29 PASS BLE_2M Ant1 Low 2402 -0.25 -35.43 ≤-20.25 PASS BLE_2M Ant1 High 2480 0.34 -39.05 ≤-19.66 PASS Page 18 of 25 Report No.ESTE-R2608157 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS Page 19 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2480-PASS Page 20 of 25 Report No.ESTE-R2608157 Appendix F: Conducted Spurious Emission Test Result TestMode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 30~26500 0.26 -42.22 ≤-19.74 PASS BLE_1M Ant1 2440 30~26500 0.20 -42.2 ≤-19.8 PASS BLE_1M Ant1 2480 30~26500 0.71 -42.28 ≤-19.29 PASS BLE_2M Ant1 2402 30~26500 -0.25 -41.95 ≤-20.25 PASS BLE_2M Ant1 2440 30~26500 -0.25 -42.01 ≤-20.25 PASS BLE_2M Ant1 2480 30~26500 0.34 -42.21 ≤-19.66 PASS Page 21 of 25 Report No.ESTE-R2608157 Test Graphs BLE_1M-Ant1-2402-30~26500-PASS BLE_1M-Ant1-2440-30~26500-PASS BLE_1M-Ant1-2480-30~26500-PASS Page 22 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2402-30~26500-PASS BLE_2M-Ant1-2440-30~26500-PASS Page 23 of 25 Report No.ESTE-R2608157 BLE_2M-Ant1-2480-30~26500-PASS Page 24 of 25 Report No.ESTE-R2608157 Appendix G: Duty Cycle Test Result TestMode Antenna Frequency[MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor[dB] BLE_1M Ant1 2440 0.09 1.00 9.00 10.46 BLE_2M Ant1 2440 0.05 1.00 5.00 13.01 Page 25 of 25 Report No.ESTE-R2608157 Test Graphs NTNV-BLE_1M-Ant1-2440 NTNV-BLE_2M-Ant1-2440

Test Report

第 1 页共 6 页天线规格书 RDMCTMZT-RF01 型号名称Model name：RDMCTMZT-RF01 项目类型：键盘板载天线日期： 2024-05-24 ANT SPEC Manufacturer:Dingnan Jinpeng Electronics Co., Ltd. Jinpeng Industrial Park, Futian Industrial Zone, Lishi Town, Dingnan County, Ganzhou City, Jiangxi Province 第 2 页共 6 页天线平面图Size：第3页共 6 页天线技术参数及环境测试：电气技术参数电性能指标 ElectricalSpecifications 频率范围 2400-2500MHz FrequencyRange 2400-2500MHz 电压驻波比＜1.92 VSWR ＜1.92 输入阻抗 50Ω InputImpedance 50Ω 方向全向 Direction All 增益 2.0±1dBi Gain 2.0±1dBi 机械指标 MechanicalSpecifications 接口形式 OPEN Inputconnector OPEN 工作温度 -20°C~+70°C WorkingTemperature -20°C~+70°C 工作湿度 20%~80% WorkingHumidity 20%~80% 环境性能测试: 项目测试条件规格储存环境在没有指定的情况下测试温度、湿度、气压如下： 1.温度为-20°C~+70°C 2.相对湿度为45%-85% 3.气压为86kpa-106kpa 电气机械性能正常高低温试验在70°C与-20°C之间进行5次循环，然后在正常条件下 1-2H，检查外观质量。尺寸应满足规定并应满足于机械、电气性能耐恒定湿热试验相对湿度95±3%，试验温度：40°C.持续2H作用后，试品取出后5min之内测定电气性能，试品在正常条件下1-2H，检查外观质量尺寸应满足规定并应满足于机械、电气性能振动试验振频范围10-55HZ，位移幅值：0.35MM，加速度幅值： 50.0M/S，扫频循环次数：30次电气机械性能正常跌落试验 1M高空按照互相垂直的轴方向自由跌落3次电气机械性能正常第4页共 6 页天线实物图: 天线性能测试图: 第 5 页共 6 页 2D.3D 测试数据Test data（2.4G）: FrequencyEfficiency(%) Gain.(dBi) 2400MHz 43.852.46 2410MHz 45.922.36 2420MHz 46.132.10 2430MHz 46.882.13 2440MHz 47.102.27 2450MHz 48.192.49 2460MHz 47.532.44 2470MHz 48.752.59 2480MHz 46.772.39 2490MHz 47.422.36 2500MHz 45.602.21 Phi 0 2D图:Phi 90 2D图Theta 90 2D图 3D 2400：第 6 页共 6 页 3D 2450： 3D 2500

Test Report

Page 1 of 46 Report No.ESTE-R2608157 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Jingheng Tengwei (Huizhou) Electronic Technology Co., Ltd. Mechanical Keyboard Model Number: 8011 Additional Model: GT87, GASKETY TKL FCC ID: 2A4MQ-8011 Applicant: Jingheng Tengwei(Huizhou) Electronic Technology Co., Ltd. Address: No.8 Minying 1 Road, Yuanzhou Town, Boluo County, Huizhou City, Guangdong Province, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2608157 Date of Test: Jul. 20, 2026 to Aug. 17, 2026 Date of Report: Aug. 24, 2026 Page 2 of 46 Report No.ESTE-R2608157 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................... 5 1.1. Description of Device (EUT) ............................................................................................................ 5 1.2. Antenna Information ......................................................................................................................... 5 1.3. Information of RF Cable ................................................................................................................... 5 2. SUMMARY OF TEST ........................................................................................................................... 6 2.1. Summary of test result ..................................................................................................................... 6 2.2. Test Facilities ..................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................ 8 2.4. Assistant equipment used for test .................................................................................................. 8 2.5. Block Diagram ................................................................................................................................... 8 2.6. Test Mode .......................................................................................................................................... 9 2.7. Power Setting of Test Software ...................................................................................................... 9 2.8. Duty Cycle .......................................................................................................................................... 9 2.9. Channel List ..................................................................................................................................... 10 2.10. Test Equipment List ...................................................................................................................... 11 3. 6DB BANDWIDTH ............................................................................................................................ 12 3.1. Limit ................................................................................................................................................... 12 3.2. Test Setup ........................................................................................................................................ 12 3.3. Spectrum Analyzer Setting ............................................................................................................ 12 3.4. Test Procedure ................................................................................................................................ 12 3.5. Test Result ....................................................................................................................................... 12 4. MAXIMUM PEAK OUTPUT POWER .................................................................................................. 13 4.1. Limit ................................................................................................................................................... 13 4.2. Test Setup ........................................................................................................................................ 13 4.3. Spectrum Analyzer Setting ............................................................................................................ 13 4.4. Test Procedure ................................................................................................................................ 13 4.5. Test Result ....................................................................................................................................... 13 5. POWER SPECTRAL DENSITY .......................................................................................................... 14 5.1. Limit ................................................................................................................................................... 14 5.2. Test Setup ........................................................................................................................................ 14 5.3. Spectrum Analyzer Setting ............................................................................................................ 14 5.4. Test Procedure ................................................................................................................................ 14 5.5. Test Result ....................................................................................................................................... 14 6. CONDUCTED BAND EDGE .............................................................................................................. 15 6.1. Limit .....................................................…

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Test Setup Photos

Radiated emission test: Below 1GHz Radiated emission test: Above 1GHz Conducted emission test: