2BGKB-B36Wireless Mechanical Keyboard

Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Nov. 21, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BGKB-B36 Keychron Technology (Shenzhen) 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, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name: Nick Xu Title: CEO Address: 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China Tel.: 8615889312153 Email: [email protected]

Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Nov. 21, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: 2BGKB-B36 Product Name: Wireless Mechanical Keyboard This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name: Nick Xu Title: CEO Address: 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China Tel.: 8615889312153 Email: [email protected] Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China 2.911 (d)(7)USA Agent v1.5 Section 2.911(d)(7) USA Agent for Service of Process Company name: Keychron Technology (Shenzhen) Co., Ltd. Address: 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China FCC ID: 2BGKB-B36 2.911(d)(7) USA Designated Agent for Service of Process We, [Keychron Technology (Shenzhen) Co., Ltd.] (“the applicant”) designate [KEYCHRON TECHNOLOGY, INC.] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either we the grantee have permanently terminated all marketing and importation of the applicable equipment within the U.S., or at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. USA Agent Company name: KEYCHRON TECHNOLOGY, INC. USA Address: 1111B S GOVERNORS AVE STE 7910, DOVER, DE, United States FRN Number: 0036875342 Contact Name: Fab Chan Telephone No: 15889312153 Email: [email protected] Applicant Company name: Keychron Technology (Shenzhen) Co., Ltd. Address: 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China Grantee FRN Number: 0035456235 FCC Grantee Code: 2BGKB Contact Name: Nick Xu Telephone No: 8615889312153 Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China 2.911 (d)(7)USA Agent v1.5 Email: [email protected] Signature: Title: CEO Signature: Title: CEO Date: 2025-11-21 Date: 2025-11-21 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China November 21, 2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BGKB-B36 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below : ⎯ Block Diagram ⎯ Schematics ⎯ Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Pursuant to DA 04-1705, the applicant also requests temporary confidential treatment of the exhibits outlined below for a period of 45 days from the date of equipment authorization and prior to marketing in the United States to prevent the premature release of any sensitive information. Applicant is aware of their responsibility to notify DERYCOM in the event information regarding the product or the product is made available to the public before the requested period has expired. ⎯ User Manual ⎯ Internal Photos Sincerely, Title: CEO Address: 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China Tel.: 8615889312153 Email: [email protected]

Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China November 21, 2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BGKB-B36 I, the undersigned, hereby authorize Shenzhen Tongzhou Testing Co.,Ltd. to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by Shenzhen Tongzhou Testing Co.,Ltd. shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with Keychron Technology (Shenzhen) Co., Ltd.. We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, Nick Xu CEO Tel: 8615889312153 Fax: 8615889312153 Email: [email protected]

Report No.: TZ0015250803PH02 Page 1 of 4 Exterior Photographs of EUT Fig.1 Fig.2 Report No.: TZ0015250803PH02 Page 2 of 4 Fig.3 Fig.4 Report No.: TZ0015250803PH02 Page 3 of 4 Fig.5 Fig.6 Report No.: TZ0015250803PH02 Page 4 of 4 Fig.7

Label Location FCC ID: 2BGKB-B36

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B36 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B36 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Results BLE: RF Exposure at Separation distance (cm): 0.5 Mode Antenna Frequency [MHz] Conducted Power [dBm] Manufacturing tolerance Antenna Gain [dBi] Max of ERP and Conducted Power including Tune Up SAR-based exemption threshold Pth [mW] Target Power [dBm] Tolerance ±[dB] [dBm] [mW] BLE_1M Ant1 2402 0.94 0.5 1 0 1.5 1.41 2.79 BLE_1M Ant1 2440 1.51 1 1 0 2 1.58 2.75 BLE_1M Ant1 2480 1.37 1 1 0 2 1.58 2.72 SRD: RF Exposure at Separation distance (cm): 0.5 Mode Antenna Frequency [MHz] Conducted Power [dBm] Manufacturing tolerance Antenna Gain [dBi] Max of ERP and Conducted Power including Tune Up SAR-based exemption threshold Pth [mW] Target Power [dBm] Tolerance ±[dB] [dBm] [mW] SRD Ant1 2402 0.93 0.5 1 0 1.5 1.41 2.79 SRD Ant1 2440 1.6 1 1 0 2 1.58 2.75 SRD Ant1 2480 1.35 1 1 0 2 1.58 2.72 Max of ERP and Conducted Power including Tune Up (dBm) = Max Conducted Tune Up Power(dBm) and Max Conducted Tune Up Power(dBm) + Antenna Gain(dBi)-2.15), whichever is greater. The Maximum Erp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.

Test Report For Antenna1 Tested Products. • Antenna1: integrated antenna. • Frequency = 2.402GHz. • Frequency = 2.441GHz. • Frequency = 2.480GHz. Antenna1 Photo & Length (mm) Radiation pattern: Antenna 1. XZ Plane at f = 2.402GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. YZ Plane at f = 2.402GHz 135 90 0 -5 45 -10 -15 -20 -25 -30 135 90 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. XY Plane at f = 2.402GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. XZ Plane at f = 2.441GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. YZ Plane at f = 2.441GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. XY Plane at f = 2.441GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. XZ Plane at f = 2.480GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. YZ Plane at f = 2.480GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Radiation pattern: Antenna 1. XY Plane at f = 2.480GHz 90 90 135 0 -5 45 -10 -15 -20 -25 -30 135 0 45 -5 -10 180 -35-30 -25 -20 -15 -10 -5 0 0 180 -15 -10 -5 0 0 225 315 225 315 270 Co-cross polarization field (dBi) Solid line: vertical polarization Dash line: horizontal polarization 270 Total field (dBi) Return Lo s s (dB ) Return Loss: Antenna 1 -2 -4 -6 -8 -10 -12 -14 -16 2 2.2 2.4 2.6 2.8 3 Frequency (GHz) BW(-10dB) 13.48% Measurements summary Frequency (GHz) Plane Return Loss (dB) Polarization Gain max. (dBi) θ for Gain max. φ for Gain max. Antenna 1 2.402 XZ -10.90Vertical -7.8290 2.402 XZ -10.90Horizontal -0.786 182 2.402 YZ -10.90Vertical -1.21 226 2.402 YZ -10.90Horizontal -7.7510 2.402 XY -10.90Vertical -15.420 2.402 XY -10.90Horizontal -0.93 180 2.441 XZ -12.20Vertical -7.36318 2.441 XZ -12.20Horizontal -1.32 180 2.441 YZ -12.20Vertical -0.981 204 2.441 YZ -12.20Horizontal -8.2324 2.441 XY -12.20Vertical -14.1-14 2.441 XY -12.20Horizontal 1.74 180 2.48 XZ -13.80Vertical -7.95312 2.48 XZ -13.80Horizontal -1.81 186 2.48 YZ -13.80Vertical -0.204 214 2.48 YZ -13.80Horizontal -8.388 2.48 XY -13.80Vertical -15.812 2.48 XY -13.80Horizontal 0.0 180

Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 1 of 23 Appendix Test Data for BLE (Conducted Measurement) Product Name: Wireless Mechanical Keyboard Trade Mark: Keychron Test Model: B36 FCC ID: 2BGKB-B36 Environmental Conditions Temperature: 23.5°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Max Zhang NOTE N/A Appendix A: DTS Bandwidth Test Result Test Mode Antenna Frequency [MHz] DTS BW [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict BLE_1M Ant1 2402 0.692 2401.660 2402.352 0.5 PASS BLE_1M Ant1 2440 0.676 2439.664 2440.340 0.5 PASS BLE_1M Ant1 2480 0.712 2479.648 2480.360 0.5 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 2 of 23 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 3 of 23 BLE_1M-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 4 of 23 Appendix B: Occupied Channel Bandwidth Test Result Test Mode Antenna Frequency [MHz] OCB [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict BLE_1M Ant1 2402 1.0416 2401.4748 2402.5164 --- --- BLE_1M Ant1 2440 1.0221 2439.4786 2440.5007 --- --- BLE_1M Ant1 2480 1.0336 2479.4815 2480.5151 --- --- Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 5 of 23 Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 6 of 23 BLE_1M-Ant1-2480 Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 7 of 23 Appendix C: Maximum peak conducted output power Test Result Peak Test Mode Antenna Frequency [MHz] Conducted Peak Power [dBm] Conducted Limit [dBm] Verdict BLE_1M Ant1 2402 0.94 ≤30 PASS BLE_1M Ant1 2440 1.51 ≤30 PASS BLE_1M Ant1 2480 1.37 ≤30 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 8 of 23 Test Graphs Peak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 9 of 23 BLE_1M-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 10 of 23 Appendix D: Maximum peak power spectral density Test Result Test Mode Antenna Frequency [MHz] Result [dBm/3kHz] Limit [dBm/3kHz] Verdict BLE_1M Ant1 2402 -9.49 ≤8.00 PASS BLE_1M Ant1 2440 -7.95 ≤8.00 PASS BLE_1M Ant1 2480 -8.54 ≤8.00 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 11 of 23 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 12 of 23 BLE_1M-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 13 of 23 Appendix E: Band edge measurements Test Result Test Mode Antenna Ch. Name Frequency [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict BLE_1M Ant1 Low 2402 -0.23 -49.36 ≤-20.23 PASS BLE_1M Ant1 High 2480 0.34 -48.83 ≤-19.66 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 14 of 23 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 15 of 23 Appendix F: Conducted Spurious Emission Test Result Test Mode Antenna Frequency [MHz] Freq. Range [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict BLE_1M Ant1 2402 0~Reference -0.49 -0.49 --- PASS BLE_1M Ant1 2402 30~1000 -0.49 -62.93 ≤-20.49 PASS BLE_1M Ant1 2402 1000~26500 -0.49 -45.05 ≤-20.49 PASS BLE_1M Ant1 2440 0~Reference 0.40 0.40 --- PASS BLE_1M Ant1 2440 30~1000 0.40 -62.32 ≤-19.6 PASS BLE_1M Ant1 2440 1000~26500 0.40 -43.64 ≤-19.6 PASS BLE_1M Ant1 2480 0~Reference 0.83 0.83 --- PASS BLE_1M Ant1 2480 30~1000 0.83 -63.2 ≤-19.17 PASS BLE_1M Ant1 2480 1000~26500 0.83 -45.13 ≤-19.17 PASS Note: offset(dB) in Reference test plots = cable loss(dB) + attenuator factor(dB); For spurious emissions plots from 30MHz to 26.5GHz, the cable loss and attenuator factors have been set in the 'Input Correction' of the Spectrum Analyzer during the test. Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 16 of 23 Test Graphs BLE_1M-Ant1-2402-0~Reference-PASS BLE_1M-Ant1-2402-30~1000-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 17 of 23 BLE_1M-Ant1-2402-1000~26500-PASS BLE_1M-Ant1-2440-0~Reference-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 18 of 23 BLE_1M-Ant1-2440-30~1000-PASS BLE_1M-Ant1-2440-1000~26500-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 19 of 23 BLE_1M-Ant1-2480-0~Reference-PASS BLE_1M-Ant1-2480-30~1000-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 20 of 23 BLE_1M-Ant1-2480-1000~26500-PASS Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 21 of 23 Appendix G: Duty Cycle Test Result Test Mode Antenna Frequency [MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor [dB] BLE_1M Ant1 2402 19.00 19.00 100.00 0.00 BLE_1M Ant1 2440 19.00 19.00 100.00 0.00 BLE_1M Ant1 2480 19.00 19.00 100.00 0.00 Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 22 of 23 Test Graphs NTNV-BLE_1M-Ant1-2402 NTNV-BLE_1M-Ant1-2440 Appendix Test Data of the Report No.: TZ0015250803FRF02 Page 23 of 23 NTNV-BLE_1M-Ant1-2480

Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 1 of 23 Appendix Test Data for SRD (Conducted Measurement) Product Name: Wireless Mechanical Keyboard Trade Mark: Keychron Test Model: B36 FCC ID: 2BGKB-B36 Environmental Conditions Temperature: 23.5°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Max Zhang NOTE N/A Appendix A: DTS Bandwidth Test Result Test Mode Antenna Frequency [MHz] DTS BW [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict SRD Ant1 2402 1.380 2401.292 2402.672 0.5 PASS SRD Ant1 2440 1.252 2439.352 2440.604 0.5 PASS SRD Ant1 2480 1.252 2479.356 2480.608 0.5 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 2 of 23 Test Graphs SRD-Ant1-2402-PASS SRD-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 3 of 23 SRD-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 4 of 23 Appendix B: Occupied Channel Bandwidth Test Result Test Mode Antenna Frequency [MHz] OCB [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict SRD Ant1 2402 2.0618 2400.9630 2403.0248 --- --- SRD Ant1 2440 2.0369 2438.9710 2441.0079 --- --- SRD Ant1 2480 2.0431 2478.9846 2481.0277 --- --- Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 5 of 23 Test Graphs SRD-Ant1-2402 SRD-Ant1-2440 Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 6 of 23 SRD-Ant1-2480 Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 7 of 23 Appendix C: Maximum peak conducted output power Test Result Peak Test Mode Antenna Frequency [MHz] Conducted Peak Power [dBm] Conducted Limit [dBm] Verdict SRD Ant1 2402 0.93 ≤30 PASS SRD Ant1 2440 1.60 ≤30 PASS SRD Ant1 2480 1.35 ≤30 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 8 of 23 Test Graphs Peak SRD-Ant1-2402-PASS SRD-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 9 of 23 SRD-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 10 of 23 Appendix D: Maximum peak power spectral density Test Result Test Mode Antenna Frequency [MHz] Result [dBm/3kHz] Limit [dBm/3kHz] Verdict SRD Ant1 2402 -12.13 ≤8.00 PASS SRD Ant1 2440 -11.66 ≤8.00 PASS SRD Ant1 2480 -10.80 ≤8.00 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 11 of 23 Test Graphs SRD-Ant1-2402-PASS SRD-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 12 of 23 SRD-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 13 of 23 Appendix E: Band edge measurements Test Result Test Mode Antenna Ch. Name Frequency [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict SRD Ant1 Low 2402 -1.45 -33.15 ≤-21.45 PASS SRD Ant1 High 2480 -1.49 -48.75 ≤-21.49 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 14 of 23 Test Graphs SRD-Ant1-2402-PASS SRD-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 15 of 23 Appendix F: Conducted Spurious Emission Test Result Test Mode Antenna Frequency [MHz] Freq. Range [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict SRD Ant1 2402 0~Reference -1.49 -1.49 --- PASS SRD Ant1 2402 30~1000 -1.49 -62.91 ≤-21.49 PASS SRD Ant1 2402 1000~26500 -1.49 -45.27 ≤-21.49 PASS SRD Ant1 2440 0~Reference -0.48 -0.48 --- PASS SRD Ant1 2440 30~1000 -0.48 -62.51 ≤-20.48 PASS SRD Ant1 2440 1000~26500 -0.48 -45.2 ≤-20.48 PASS SRD Ant1 2480 0~Reference -0.78 -0.78 --- PASS SRD Ant1 2480 30~1000 -0.78 -62.67 ≤-20.78 PASS SRD Ant1 2480 1000~26500 -0.78 -45.27 ≤-20.78 PASS Note: offset(dB) in Reference test plots = cable loss(dB) + attenuator factor(dB); For spurious emissions plots from 30MHz to 26.5GHz, the cable loss and attenuator factors have been set in the 'Input Correction' of the Spectrum Analyzer during the test. Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 16 of 23 Test Graphs SRD-Ant1-2402-0~Reference-PASS SRD-Ant1-2402-30~1000-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 17 of 23 SRD-Ant1-2402-1000~26500-PASS SRD-Ant1-2440-0~Reference-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 18 of 23 SRD-Ant1-2440-30~1000-PASS SRD-Ant1-2440-1000~26500-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 19 of 23 SRD-Ant1-2480-0~Reference-PASS SRD-Ant1-2480-30~1000-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 20 of 23 SRD-Ant1-2480-1000~26500-PASS Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 21 of 23 Appendix G: Duty Cycle Test Result Test Mode Antenna Frequency [MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor [dB] SRD Ant1 2402 19.00 19.00 100.00 0.00 SRD Ant1 2440 19.00 19.00 100.00 0.00 SRD Ant1 2480 19.00 19.00 100.00 0.00 Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 22 of 23 Test Graphs NTNV-SRD-Ant1-2402 NTNV-SRD-Ant1-2440 Appendix Test Data of the Report No.: TZ0015250803FRF12 Page 23 of 23 NTNV-SRD-Ant1-2480

Report No.: TZ0015250803FRF02 Page 1 of 31 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. The test report apply only to the specific sample(s) tested under stated test conditions. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. TEST REPORT Report Number : TZ0015250803FRF02 Product Name : Wireless Mechanical Keyboard Model/Type reference : B36 FCC ID : 2BGKB-B36 Prepared for : Keychron Technology (Shenzhen) Co., Ltd. 201, Building 2, Wenkeng Industrial Zone, No. 24, Dafa Road, DafaPu Community, Bantian Jie Dao, Longgang District, Shenzhen, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd. 1st Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Standards : FCC CFR Title 47 Part 15C, ANSI C63.10-2020 Date of Test : 2025-08-13 ~ 2025-08-20 Date of Issue : 2025-08-21 Prepared by : Nancy Li Reviewed by : Allen Lai Approved by : Max Zhang (Authorized Officer) Report No.: TZ0015250803FRF02 Page 2 of 31 ** Report Revise Record ** Report Version Revise Time Issued Date Valid Version Notes V1.0 / 2025-08-21 Valid Initial release Report No.: TZ0015250803FRF02 Page 3 of 31 TABLE OF CONTENTS 1. G E N E R A L I N F O R M A T I O N ....................................................... 4 1.1. Client Information ................................................................................................................... 4 1.2. Description of Device (EUT) ..............................................................................................…

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