2BC9Z002-80-Hkeyboard

FCC Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Page 1 of 5 Report No.: LGT26F233 Appendix - External Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 5 Report No.: LGT26F233 Appendix - External Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 5 Report No.: LGT26F233 Appendix - External Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 5 Report No.: LGT26F233 Appendix - External Photographs of EUT Constructional Details Photo 7 Photo 8 Page 5 of 5 Report No.: LGT26F233 Appendix - External Photographs of EUT Constructional Details Photo 9 Photo 10

Label Size: 79.75*34.75mm

Page 1 of 5 Report No.: LGT26F233 Appendix - Internal Photographs of EUT Constructional Details Photo 1 Photo 2 ANT Page 2 of 5 Report No.: LGT26F233 Appendix - Internal Photographs of EUT Constructional Details Photo 3 Photo 4 ANT Page 3 of 5 Report No.: LGT26F233 Appendix - Internal Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 5 Report No.: LGT26F233 Appendix - Internal Photographs of EUT Constructional Details Photo 7 Photo 8 Page 5 of 5 Report No.: LGT26F233 Appendix - Internal Photographs of EUT Constructional Details Photo 9

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Page 1 of 8 EMF TEST REPORT Product Name: keyboard Model Number: CORE-002-80HE FCC ID: 2BC9Z002-80-H Issued For : HUIZHOU LJ TECH LTD No.9, Building D3, Taihong Industrial Park, No.3 Longshan Sixth Road.Daya Bay, Huizhou China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT26F233HA03 Sample Received Date: Jun. 30, 2026 Date of Test: Jun. 30, 2026 ~ Jul. 23, 2026 Date of Issue: Jul. 23, 2026 Report No.: LGT26F233HA03 Page 2 of 8 TEST REPORT CERTIFICATION Applicant: 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 Product Name: keyboard Trademark: N/A Model Number: CORE-002-80HE Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Chris Chen Engineer Technical Director Report No.: LGT26F233HA03 Page 3 of 8 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Report No.: LGT26F233HA03 Page 4 of 8 Revision History Rev. Issue Date Revisions 00 Jul. 23, 2026 Initial Issue Report No.: LGT26F233HA03 Page 5 of 8 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: keyboard Test Model Number: CORE-002-80HE Series Number: N/A Model Difference: N/A Frequency Bands: Bluetooth 2402-2480MHz 2.4G 2402-2480MHz Rating: Input: DC 5V Battery: Capacity: 4000mAh Rated Voltage: 3.7V Hardware Version: N/A Software Version: V115 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate: FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT26F233HA03 Page 6 of 8 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Report No.: LGT26F233HA03 Page 7 of 8 The 1-g 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 The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 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. Report No.: LGT26F233HA03 Page 8 of 8 2.3 TEST RESULT Turn up Result Mode Turn up Power BLE 1M-GFSK 1±1dBm BLE 2M-GFSK 1±1dBm 2.4G -1.5±1.5dBm Note: 2.4G dBm=dBuv/[email protected] The MPE result of worst mode: RF Function Frequency (MHz) Max Turn up Power (dBm) Max Turn up Power (mW) Estimated SAR Limit Ratio Result BLE 2480 2.00 1.58 0.499 3 0.166 Pass 2.4G 2480 0.00 1.00 0.315 3 0.105 Pass Note: 1. The Maximum Power Density is less than the limit, complies with the exemption requirements. ※※※※※END OF THE REPORT※※※※※

深圳市英佳创电子科技有限公司 ht tp://www.szsyjc.com 总部地址：深圳市光明区马田街道油麻岗路11号宏域光明谷C栋 Tel：0755-27810060Fax：0755-27810057Web：http://www.szsyjc.com CUSTOMER NAME 客户名称 CUSTOMER P/N 客户料号 10130181542 PART NAME 品 名 RF-4 ANT，，2.4G 0.4mmPCB ANT， L=110mm,0.81mm /90N3521_V1.0_ IPEX P/ N 料 号 YJC-6N110-B87 APPROVAL REV. 版 次 A0 DELIVERY DATE 送样日期 2026 年 06 月 10 日 PREPARED BY 承 办 CHECKED BY 审 核 APPROVED BY 核 准 Customer Approved 客 户 承 认 Prepared By 承 办 Checked By 审 核 Approved By 核 准 SHENZHEN YINGJIACHUANG ELECTRONIC TECHNOLOGY CO., LTD. Headquarters Address: Building C, Hongyu Guangming Valley, No.11 Yumagang Road, Matian Street, Guangming District, Shenzhen http://www.szsyjc.com 深圳市英佳创电子科技有限公司 SHENZHEN YINGJIACHUANG ELECTRONIC TECHNOLOGY CO., LTD. http://www.szsyjc.com 电 性 能 指 标 Electrical Specifications 频率范围 2400-2500MHz Frequency Range 2400-2500MHz 电压驻波比＜1.92VSWR＜1.92 输入阻抗50 ΩInput Impedance50 Ω 方向全向DirectionAll 增益1.47dBiGain1.47dBi 机 械 指 标Mechanical Specifications 线材颜色黑色Wire ColorBlack 接口形式XD-4Input connectorXD-4 线材长度110MMWire Length110MM 工作温度-30°C~+80°C Working Temperature -30°C~+80°C 工作湿度20%~80%Working Humidity 20%~80% 深圳市英佳创电子科技有限公司 SHENZHEN YINGJIACHUANG ELECTRONIC TECHNOLOGY CO., LTD. Antenna Type: PCB http://www.szsyjc.com Antenna mounting diagram 深圳市英佳创电子科技有限公司 SHENZHEN YINGJIACHUANG ELECTRONIC TECHNOLOGY CO., LTD. osition http://www.szsyjc.com 2D、3D(2.4G): Phi 0 2D :Phi 90 2D Theta 90 2D 3D24003D24503D2500 Frequency(MHz）Efficiency(%)Gain.(dBi) 2400MHz39.431.09 2410MHz40.181.12 2420MHz40.361.22 2430MHz40.841.31 2440MHz42.351.47 2450MHz42.121.46 2460MHz41.991.4 2470MHz41.711.39 2480MHz41.531.34 2490MHz40.581.29 2500MHz40.491.29 深圳市英佳创电子科技有限公司 SHENZHEN YINGJIACHUANG ELECTRONIC TECHNOLOGY CO., LTD.

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Page 1 of 29 RF TEST REPORT Product Name: keyboard Model Number: CORE-002-80HE FCC ID: 2BC9Z002-80-H Issued For : HUIZHOU LJ TECH LTD No.9, Building D3, Taihong Industrial Park, No.3 Longshan Sixth Road.Daya Bay, Huizhou China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT26F233RF04 Sample Received Date: Jun. 30, 2026 Date of Test: Jun. 30, 2026 ~ Jul. 23, 2026 Date of Issue: Jul. 23, 2026 Report No.: LGT26F233RF04 Page 2 of 29 TEST REPORT CERTIFICATION Applicant: 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 Product Name: keyboard Trademark: N/A Model Number: CORE-002-80HE Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC Part 15.249, Subpart C ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 PASS Prepared by: Approved by: Chris Chen Vita Li Engineer Technical Director Report No.: LGT26F233RF04 Page 3 of 29 Table of Contents Page 1. SUMMARY OF TEST RESULTS 5 1.1 TEST LABORATORY 6 1.2 MEASUREMENT UNCERTAINTY 6 2. GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF THE EUT 7 2.2 DESCRIPTION OF THE TEST MODES 8 2.3 TEST SOFTWARE AND POWER LEVEL 8 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 9 2.5 EQUIPMENTS LIST 10 3. EMC EMISSION TEST 12 3.1 CONDUCTED EMISSION MEASUREMENT 12 3.2 TEST PROCEDURE 13 3.3 TEST SETUP 13 3.4 EUT OPERATING CONDITIONS 13 3.5 TEST RESULTS 14 4. RADIATED EMISSION MEASUREMENT 16 4.1 RADIATED EMISSION LIMITS 16 4.2 TEST PROCEDURE 17 4.3 TEST SETUP 18 4.4 EUT OPERATING CONDITIONS 18 4.5 FIELD STRENGTH CALCULATION 19 4.6 TEST RESULTS 20 4.7 TEST RESULTS (BAND EDGE REQUIREMENTS) 25 4.8 TEST RESULTS (FIELD STRENGTH OF FUNDAMENTAL) 25 5. BANDWIDTH TEST 26 5.1 TEST PROCEDURE 26 5.2 TEST SETUP 26 5.3 EUT OPERATION CONDITIONS 26 5.4 TEST RESULTS 26 6. ANTENNA REQUIREMENT 28 6.1 STANDARD REQUIREMENT 28 6.2 EUT ANTENNA 28 APPENDIX I - MEASUREMENT PHOTOS 29 Report No.: LGT26F233RF04 Page 4 of 29 Revision History Rev. Issue Date Revisions 00 Jul. 23, 2026 Initial Issue Report No.: LGT26F233RF04 Page 5 of 29 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part 15.249, Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.249(a) Field Strength of Fundamental & Harmonics PASS -- 15.249(d) Radiated Spurious Emission (band-edge & out-of-band) PASS -- 15.205 Restricted Band Edge Emission PASS -- 15.215 20dB Bandwidth PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024. Report No.: LGT26F233RF04 Page 6 of 29 1.1 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate: FCC Registration No.: 746540 CAB ID: CN0136 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 Occupied Channel Bandwidth ±0.46% 2 RF Output Power, Conducted ±0.71dB 3 Power Spectral Density, Conducted ±1.57dB 4 Unwanted Emission, Conducted ±0.63dB 5 Conducted emission ±2.80dB 6 All Emissions, Radiated (0.009-30MHz) ±2.16dB 7 All Emissions, Radiated (30MHz-1GHz) ±4.61dB 8 All Emissions, Radiated (1GHz-18GHz) ±5.49dB 9 All Emissions, Radiated (18GHz-40GHz) ±4.31dB Note: The measurement uncertainty is not included in the test result. Report No.: LGT26F233RF04 Page 7 of 29 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: keyboard Test Model Number: CORE-002-80HE Series Number: N/A Model Difference: N/A Product Description: Operation Frequency: 2402~2480 MHz Modulation Type: GFSK Number Of Channel: 40CH Antenna Type: PCB Antenna Antenna Gain (dBi): 1.47 Rating: Input: DC 5V Battery: Capacity: 4000mAh Rated Voltage: 3.7V Hardware Version: N/A Software Version: V115 Connecting I/O Port(s): Please refer to the Note 1. Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User Manual. 2. The antenna information refers to the manufacturer provide report, applicable only to the tested sample identified in the report. Due to the incorrect antenna information, a series of problems such as the accuracy of the test results will be borne by the customer. 3. Channel List Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 0 2402 14 2430 28 2458 1 2404 15 2432 29 2460 2 2406 16 2434 30 2462 3 2408 17 2436 31 2464 4 2410 18 2438 32 2466 5 2412 19 2440 33 2468 6 2414 20 2442 34 2470 7 2416 21 2444 35 2472 8 2418 22 2446 36 2474 9 2420 23 2448 37 2476 10 2422 24 2450 38 2478 11 2424 25 2452 39 2480 12 2426 26 2454 13 2428 27 2456 Report No.: LGT26F233RF04 Page 8 of 29 2.2 DESCRIPTION OF THE TEST MODES For conducted test items and radiated spurious emissions Each of these EUT operation mode(s) or test configuration mo…

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Page 1 of 2 Report No.: LGT26F233 Appendix - Test Setup photos Set-up for Radiated Spurious Emission, Below 1GHz Set-up for Radiated Spurious Emission, Above 1GHz Page 2 of 2 Report No.: LGT26F233 Set-up for Conducted Emission