2BGKB-B2PROWireless Mechanical Keyboard

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. Changes or modifications to this unit 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. This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter. Radiation Exposure Statement The device has been evaluated to meet general RF exposure requirement in portable exposure condition without restriction.

Shenzhen Bipu Technology Co., Ltd Building 2, Floor 2, Wenkeng Industrial Area, Dafa Road No.24, Bantian, Long Gang District, Shenzhen, Guangdong, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Date: 11/9/2023 U.S. Agent Designation Shenzhen Bipu Technology Co., Ltd acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BGKB-B2PRO): Name and company of U.S. agent: Keychron, Inc. Physical U.S. address of agent: 8 The Green ste a, Dover, DE 19901, United States FRN of U.S. agent: 0033472820 Email address of U.S. agent: [email protected] Keychron, Inc. acknowledges their obligation to accept service of process on behalf of Keychron Technology (Shenzhen) Co., Ltd. Keychron Technology (Shenzhen) Co., Ltd. with the FRN [0035456235] accepts its obligation to maintain an agent for service of process in the United States 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 the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Nick Xu Keychron Technology (Shenzhen) Co., Ltd. Signature Nick Xu CEO Keychron, Inc. 48_[model] US_Agent_2.911 (d)(7) - U, V05

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Fig.5 Fig.6

Label Location FCC ID: 2BGKB-B2PRO

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 4 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 4 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 4 Fig.7 Fig.8 Bluetooth antenna

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 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-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 The example values shown in Table B.2 are for illustration only. Frequency (MHz) Distance (mm) 5 10 15 20 25 30 35 40 45 50 300 39 65 88 110 129 148 166 184 201 217 450 22 44 67 89 112 135 158 180 203 226 835 9 25 44 66 90 116 145 175 207 240 1900 3 12 26 44 66 92 122 157 195 236 2450 3 10 22 38 59 83 111 143 179 219 3600 2 8 18 32 49 71 96 125 158 195 5800 1 6 14 25 40 58 80 106 136 169 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Conducted Power Results TestMode Antenna Frequency[MHz] Result[dBm] BLE_1M Ant1 2402 0.38 BLE_1M Ant1 2440 0.54 BLE_1M Ant1 2480 0.90 TestMode Antenna Frequency[MHz] Result[dBm] BLE_2M Ant1 2402 0.26 BLE_2M Ant1 2440 0.38 BLE_2M Ant1 2480 0.71 Manufacturing tolerance BLE(1Mbps) (Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) 0 0 0.5 Tolerance ±(dB) 1 1 1 SRD2Mbps) (Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) 0 0 0 Tolerance ±(dB) 1 1 1 Results Test Mode Max Conducted Tune Up Power(dBm) Max of ERP and Conducted Power including Tune Up (dBm) Max of ERP and Conducted Power including Tune Up (mW) Exemption Limit(mW) BLE(1Mbps) 1.5 1.5 1.41 3 SRD(2Mbps) 1.0 1.0 1.26 3 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 antenna gain of the EUT for BT is 0 dBi (Max). the Maximum Eirp 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 MAX Gain 1.87dBi Frequency (GHz) Plane Return Loss (dB) Polarization Gain max. (dBi) θ for Gain max. φ for Gain max. Antenna 1 2.402 XZ -10.90 Vertical -7.8 290 2.402 XZ -10.90 Horizontal 0.786 182 2.402 YZ -10.90 Vertical 1.21 226 2.402 YZ -10.90 Horizontal -7.75 10 2.402 XY -10.90 Vertical -15.4 20 2.402 XY -10.90 Horizontal 0.93 180 2.441 XZ -12.20 Vertical -7.36 318 2.441 XZ -12.20 Horizontal 1.32 180 2.441 YZ -12.20 Vertical 0.981 204 2.441 YZ -12.20 Horizontal -8.23 24 2.441 XY -12.20 Vertical -14.1 -14 2.441 XY -12.20 Horizontal 1.74 180 2.48 XZ -13.80 Vertical -7.95 312 2.48 XZ -13.80 Horizontal 1.81 186 2.48 YZ -13.80 Vertical 0.204 214 2.48 YZ -13.80 Horizontal -8.38 8 2.48 XY -13.80 Vertical -15.8 12 2.48 XY -13.80 Horizontal 1.87 180

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 1 of 22 Appendix Test Data for BLE (Conducted Measurement) Product Name: Wireless Mechanical Keyboard Trade Mark: Keychron Test Model: B2 Pro FCC ID: 2BGKB-B2PRO Environmental Conditions Temperature: 23.8°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Hugo Chen NOTE N/A Appendix A: DTS Bandwidth Test Result TestMode Antenna Frequency[MHz] DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.652 2401.688 2402.340 0.5 PASS BLE_1M Ant1 2440 0.700 2439.668 2440.368 0.5 PASS BLE_1M Ant1 2480 0.660 2479.680 2480.340 0.5 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 2 of 22 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 3 of 22 BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 4 of 22 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Frequency[MHz] OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0345 2401.4911 2402.5256 --- --- BLE_1M Ant1 2440 1.0333 2439.4879 2440.5212 --- --- BLE_1M Ant1 2480 1.0379 2479.4905 2480.5284 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 5 of 22 Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 6 of 22 BLE_1M-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 7 of 22 Appendix C: Maximum peak conducted output power Test Result Peak TestMode Antenna Frequency[MHz] Conducted Peak Power[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 0.38 ≤30 PASS BLE_1M Ant1 2440 0.54 ≤30 PASS BLE_1M Ant1 2480 0.90 ≤30 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 8 of 22 Test Graphs Peak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 9 of 22 BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 10 of 22 Appendix D: Maximum peak power spectral density Test Result TestMode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -10.10 ≤8.00 PASS BLE_1M Ant1 2440 -9.32 ≤8.00 PASS BLE_1M Ant1 2480 -8.20 ≤8.00 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 11 of 22 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 12 of 22 BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 13 of 22 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 -0.39 -50.54 ≤-20.39 PASS BLE_1M Ant1 High 2480 -0.03 -49.02 ≤-20.03 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 14 of 22 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 15 of 22 Appendix F: Conducted Spurious Emission Test Result TestMod e Antenn a Frequency[MHz ] FreqRange [MHz] RefLeve l [dBm] Result[dBm ] Limit[dBm ] Verdic t BLE_1M Ant1 2402 0~Referenc e -0.17 -0.17 --- PASS BLE_1M Ant1 2402 30~1000 -0.17 -62.75 ≤-20.17 PASS BLE_1M Ant1 2402 1000~26500 -0.17 -48.26 ≤-20.17 PASS BLE_1M Ant1 2440 0~Referenc e -0.23 -0.23 --- PASS BLE_1M Ant1 2440 30~1000 -0.23 -62.86 ≤-20.23 PASS BLE_1M Ant1 2440 1000~26500 -0.23 -47.25 ≤-20.23 PASS BLE_1M Ant1 2480 0~Referenc e -0.04 -0.04 --- PASS BLE_1M Ant1 2480 30~1000 -0.04 -61.9 ≤-20.04 PASS BLE_1M Ant1 2480 1000~26500 -0.04 -48.4 ≤-20.04 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 16 of 22 Test Graphs BLE_1M-Ant1-2402-0~Reference-PASS BLE_1M-Ant1-2402-30~1000-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 17 of 22 BLE_1M-Ant1-2402-1000~26500-PASS BLE_1M-Ant1-2440-0~Reference-PASS BLE_1M-Ant1-2440-30~1000-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 18 of 22 BLE_1M-Ant1-2440-1000~26500-PASS BLE_1M-Ant1-2480-0~Reference-PASS BLE_1M-Ant1-2480-30~1000-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 19 of 22 BLE_1M-Ant1-2480-1000~26500-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 20 of 22 Appendix G: Duty Cycle Test Result TestMode 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 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 21 of 22 Test Graphs NTNV-BLE_1M-Ant1-2402 NTNV-BLE_1M-Ant1-2440 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-BLE Page 22 of 22 NTNV-BLE_1M-Ant1-2480

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 1 of 22 Appendix Test Data for SRD (Conducted Measurement) Product Name: Wireless Mechanical Keyboard Trade Mark: Keychron Test Model: B2 Pro FCC ID: 2BGKB-B2PRO Environmental Conditions Temperature: 23.8°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Hugo Chen NOTE N/A Appendix A: DTS Bandwidth Test Result TestMode Antenna Frequency[MHz] DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict SRD Ant1 2402 1.244 2401.416 2402.660 0.5 PASS SRD Ant1 2440 1.328 2439.340 2440.668 0.5 PASS SRD Ant1 2480 1.364 2479.368 2480.732 0.5 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 2 of 22 Test Graphs SRD-Ant1-2402-PASS SRD-Ant1-2440-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 3 of 22 SRD-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 4 of 22 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Frequency[MHz] OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict SRD Ant1 2402 2.0696 2400.9716 2403.0412 --- --- SRD Ant1 2440 2.0887 2438.9686 2441.0573 --- --- SRD Ant1 2480 2.0081 2478.9991 2481.0072 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 5 of 22 Test Graphs SRD-Ant1-2402 SRD-Ant1-2440 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 6 of 22 SRD-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 7 of 22 Appendix C: Maximum peak conducted output power Test Result Peak TestMode Antenna Frequency[MHz] Conducted Peak Power[dBm] Conducted Limit[dBm] Verdict SRD Ant1 2402 0.26 ≤30 PASS SRD Ant1 2440 0.38 ≤30 PASS SRD Ant1 2480 0.71 ≤30 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 8 of 22 Test Graphs Peak SRD-Ant1-2402-PASS SRD-Ant1-2440-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 9 of 22 SRD-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 10 of 22 Appendix D: Maximum peak power spectral density Test Result TestMode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict SRD Ant1 2402 -12.16 ≤8.00 PASS SRD Ant1 2440 -12.70 ≤8.00 PASS SRD Ant1 2480 -11.89 ≤8.00 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 11 of 22 Test Graphs SRD-Ant1-2402-PASS SRD-Ant1-2440-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 12 of 22 SRD-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 13 of 22 Appendix E: Band edge measurements Test Result TestMod e Antenn a ChNam e Frequency[MHz ] RefLevel[dBm ] Result[dBm ] Limit[dBm ] Verdic t SRD Ant1 Low 2402 -1.90 -37.34 ≤-21.9 PASS SRD Ant1 High 2480 -1.51 -49.83 ≤-21.51 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 14 of 22 Test Graphs SRD-Ant1-2402-PASS SRD-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 15 of 22 Appendix F: Conducted Spurious Emission Test Result TestMod e Antenn a Frequency[MHz ] FreqRange [MHz] RefLeve l [dBm] Result[dBm ] Limit[dBm ] Verdic t SRD Ant1 2402 0~Referenc e -2.27 -2.27 --- PASS SRD Ant1 2402 30~1000 -2.27 -62.15 ≤-22.27 PASS SRD Ant1 2402 1000~26500 -2.27 -48.92 ≤-22.27 PASS SRD Ant1 2440 0~Referenc e -1.99 -1.99 --- PASS SRD Ant1 2440 30~1000 -1.99 -62.42 ≤-21.99 PASS SRD Ant1 2440 1000~26500 -1.99 -48.07 ≤-21.99 PASS SRD Ant1 2480 0~Referenc e -1.10 -1.10 --- PASS SRD Ant1 2480 30~1000 -1.10 -60.87 ≤-21.1 PASS SRD Ant1 2480 1000~26500 -1.10 -50.22 ≤-21.1 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 16 of 22 Test Graphs SRD-Ant1-2402-0~Reference-PASS SRD-Ant1-2402-30~1000-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 17 of 22 SRD-Ant1-2402-1000~26500-PASS SRD-Ant1-2440-0~Reference-PASS SRD-Ant1-2440-30~1000-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 18 of 22 SRD-Ant1-2440-1000~26500-PASS SRD-Ant1-2480-0~Reference-PASS SRD-Ant1-2480-30~1000-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 19 of 22 SRD-Ant1-2480-1000~26500-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 20 of 22 Appendix G: Duty Cycle Test Result TestMode 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 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 21 of 22 Test Graphs NTNV-SRD-Ant1-2402 NTNV-SRD-Ant1-2440 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B2PRO Report No.: TZ240706068-SRD Page 22 of 22 NTNV-SRD-Ant1-2480

FCC TEST REPORT Test report On Behalf of Keychron Technology (Shenzhen) Co., Ltd. For Wireless Mechanical Keyboard Model No: B2 Pro FCC ID: 2BGKB-B2PRO 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 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2024/7/10 ~ 20247/15 Date of Report: 2024/7/16 Report Number: TZ240706068-BLE 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. ....... Report No.: TZ240706068-BLE Page 2 of 34 TEST RESULT CERTIFICATION Applicant’s 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 Manufacture's 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 Product description Trade Mark: Keychron Product name ............................ : Wireless Mechanical Keyboard Model and/or type reference : B2 Pro Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 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. Date of Test ........................................... : Date (s) of performance of tests ............. : 2024/7/10 ~ 20247/15 Date of Issue .......................................... : 2024/7/16 Test Result.............................................. : Pass Testing Engineer : (Allen Lai) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) ....... Report No.: TZ240706068-BLE Page 3 of 34 Revision History Revision Issue Date Revisions Revised By 000 2024/7/16 Initial Issue Andy Zhang ....... Report No.: TZ240706068-BLE Page 4 of 34 TABLE OF CONTENTS 1 GENERAL INFORMATION ................................................................................................... 5 1.1 Description of Device (EUT)..................................................................................................... 5 1.2 Wireless Function Tested in this Report ................................................................................... 5 1.3 EUT configuration .................................................................................................................... 6 1.4 Description of Test Facility ....................................................................................................... 6 1.5 Statement of the Measurement Uncertainty ............................................................................. 7 1.6 Measurement Uncertainty ........................................................................................................ 7 1.7 Description of Test Modes ....................................................................................................... 7 1.8 Frequency of Channels ............................................................................................................ 7 2 TEST METHODOLOGY ........................................................................................................ 8 2.1 EUT Configuration ................................................................................................................... 8 2.2 EUT Exercise ........................................................................................................................... 8 2.3 Test Sample ............................................................................................................................ 8 3 SYSTEM TEST CONFIGURATION ....................................................................................... 9 3.1 Justification .............................................................................................................................. 9 3.2 EUT Exercise Software ............................................................................................................ 9 3.3 Special Accessories ................................................................................................................. 9 3.4 Block Diagram/Schematics ...................................................................................................... 9 3.5 Equipment Modifications .......................................................................................................... 9 3.6 Test Setup ............................................................................................................................... 9 4 SUMMARY OF TEST RESULTS ......................................................................................... 10 5 TEST RESULT..................................................................................................................... 11 5.1 On Time and Duty Cycle ........................................................................................................ 11 5.2 Maximum Peak Conducted Output Power Measurement ....................................................... 12 5.3 Power Spectral Density Measurement ................................................................................... 13 5.4 6 dB Spectrum Bandwidth Measurement ............…

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FCC TEST REPORT Test report On Behalf of Keychron Technology (Shenzhen) Co., Ltd. For Wireless Mechanical Keyboard Model No: B2 Pro FCC ID: 2BGKB-B2PRO 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 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2024/7/10 ~ 20247/15 Date of Report: 2024/7/16 Report Number: TZ240706068-SRD 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 …

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