2BGKB-B1PROWireless Mechanical Keyboard

B1 Pro Ultra-Slim Wireless Keyboard 2 Keychron B1 Pro Ultra-Slim Wireless Keyboard x 1 Type-C Cable x 1 Type-A to Type-C Adapter x1 Type-A 2.4GHz Receiver x 1 Quick Start Guide x 1 Silicone Skin x 1 IN THE BOX: 3 1 Connect 2.4GHz Receiver Switch toggle to 2.4GHz mode Connect the 2.4GHz receiver to the device USB port. 2 Connect Bluetooth Switch toggle to Bluetooth Press fn + 1 (for 4 seconds) and pair with device named Keychron B1 Pro. 2.4G = 2.4GHz BT / Cable / 2.4G BT / Cable / 2.4G fn + 1 4 Switch To The Right System 4 3 Connect Cable Switch toggle to Cable WinMac BT / Cable / 2.4G Please make sure the system toggle on the top right corner has been switched to the same system as your computer’s operating system. 5 Reset Keyboard Hold fn + J + Z for 4 seconds. 6 Switch Between Function And Multimedia Keys 5 Press fn + X + L (for 4 seconds) to switch Function keys Multimedia keys F1 / F2 / F3 / F4 / F5 / F6 / F7 / F8 / F9 / F10 / F11 / F12 fn + X + L fn + J + Z 6 8 The Layers There are four layers of key settings on the keyboard. The layer 0 and layer 1 are for the Mac system. The layer 2 and layer 3 are for the Windows system. If your system toggle is switched to Mac, then the layer 0 will be activated. If your system toggle is switched to Windows, then the layer 2 will be activated. Remember that if you are using it in Windows mode, please make changes to the layer 2 instead of the top layer (the layer 0). This is a common mistake people are making. 7 The Keychron Launcher App Please visit launcher.keychron.com to access the Keychron online launcher app. This app enables users to remap keys, adjust key actuation points, assign multiple commands to a single key, enter game controller mode, and more. If it cannot recognize your keyboard, please reach our support to get instruction. *The online launcher App can only run on the latest version of Chrome, Edge, and Opera browsers yet. *The online launcher App only works when the keyboard is connected by wire to the computer. B1 PRO ULTRA-SLIM WIRELESS KEYBOARD SPECIFICATIONS Operating environment: -10 to 50°C Technical specifications can be subjected to change without notice, we apologize for any inconvenience caused. Number of keys: 77 Battery: 800mAh Battery life: 1200 hours Charging time: Around 2.5 hours Charging port: Type-C Mode: 2.4GHz / Bluetooth / Wired 2.4GHz / Bluetooth operating distance: Within 10 meters (open space) Name of Bluetooth device: Keychron B1 Pro 7 8 B1 PRO ULTRA-SLIM WIRELESS KEYBOARD OVERVIEW ① Bluetooth Channel ② Caps Lock Indicator ③ 2.4GHz / Bluetooth Indicator ④ Charging Indicator ⑤ BT Cable (Off) 2.4G (Mode Toggle Swtich) ⑥ Mac Win (OS Toggle Switch) ⑦ Type-C Charging Port ① ②③④ ⑤ ⑦⑥ Mac / Windows Off 9 DEFAULT KEY LAYOUT: LAYER 0: This layer will be activated when your keyboard’s system toggle is switched to Mac. 10 Layer 1: This layer will be activated when your keyboard’s system toggle is switched to Mac and press the fn/MO(1) key. 11 LAYER 2: This layer will be activated when your keyboard’s system toggle is switched to Windows. 12 LAYER 3: This layer will be activated when your keyboard’s system toggle is switched to Windows and press the fn/MO(3) key. 13 KEY DESCRIPTION Screen Brightness Decrease Screen Brightness Increase Previous Play/Pause Next Mute Key Description Scr- Scr+ Prvs Play Next Mute Layer 1 will be activated when holding this key Key Description MO(1) Layer 3 will be activated when holding this key MO(3) Bluetooth Host 1 BTH1 Bluetooth Host 2 Bluetooth Host 3 2.4 GHz Host2.4G TaskTask View FileFile Explore BootBootLoader CalcCalculator Volume IncreaseVol+ BTH3 Volume DecreaseVol- BTH2 Key Description LED STATUS OVERVIEW Charging - static red Fully charged - static green Power indicator Bluetooth / 2.4GHz indicator Charging Enable Caps Lock - static white Disable Caps Lock - light off Caps lock indicatorCaps Lock Bluetooth / 2.4GHz LED LocationFunctionStatus Pairing -slow blinking Paired -static light and then off Reconnecting -fast blinking FUNCTION DESCRIPTION: CHARGING Plug the cable into a USB port and plug the other end into the keyboard port. Power Indicator: a red light will stay on while charging; fully charged in around 2.5 hours, the light turns green. 14 15 *The Keychron keyboard is compatible with all USB ports. Please use a 5V 1A adapter or USB 3.0 for the best performance. The Keychron B1 Pro can be charged in 2.4GHz/Cable/Bluetooth mode. **This product supports up to 5V charging voltage and 1A charging current. We are not responsible for any problems caused by improper charging. 1. Switch the toggle to the Bluetooth option. 2. Hold “fn+1” key for 4 seconds to activate Bluetooth pairing (the Bluetooth indicator fast flashes for 3 minutes to detect pairing). 3. Search for the Bluetooth device “Keychron B1 Pro” on your device and connect it (the Bluetooth indicator goes off after successful pairing). Note: This keyboard supports pairing up to 3 devices simultaneously via key combination “fn” + “1” / “fn” + “2” / “fn” + “3”. *The Bluetooth indicator will continue to flash for 3 minutes. **Slow or failed connections may exist due to different Bluetooth versions, please make sure all the settings are correct. BLUETOOTH MODE 2.4GHZ / CABLE / BLUETOOTH MODE (MODE TOGGLE) 2.4GHZ MODE 1. Connect the 2.4GHz receiver to your device's USB Port. 2. Switch the toggle to the 2.4GHz option. The keyboard will automatically connect to your device. 16 SWITCH BLUETOOTH DEVICES Short press key combination “fn” + “1” / “fn” + “2” / “fn” + “3” to switch to other device. 1. Switch the toggle to the Cable option (it only works when a USB cable is plugged in). 2. Connect our cable with your PC and keyboard. *Under Wired Mode, keyboard will not enter into Battery Saver Mode. WIRED MODE: RECONNECT: 1. Switch the keyboard to the Bluetooth option to activate the keyboard. 2. The Bluetooth indicator flashes for 3 seconds and automatically pairs with the last paired device. 3. If the Bluetooth indicator is …

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO 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-B1PRO 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-B1PRO 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

Label Location FCC ID: 2BGKB-B1PRO

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO 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-B1PRO 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-B1PRO 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-B1PRO 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 PCB antenna

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO 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-B1PRO 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-B1PRO 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 BLE TestMode Antenna Frequency[MHz] Result[dBm] BLE Ant1 2402 -0.72 BLE Ant1 2440 -0.46 BLE Ant1 2480 -0.11 TestMode Antenna Frequency[MHz] Result[dBm] SRD Ant1 2402 -0.70 SRD Ant1 2440 -0.45 SRD Ant1 2480 -0.08 Manufacturing tolerance BLE(1Mbps) (Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) -1 -1 -0.5 Tolerance ±(dB) 1 1 1 SRD(2Mbps) (Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) -1 -1 -0.5 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) GFSK 0.5 2.37 1.73 3 π/4-DQPSK 0.5 2.37 1.73 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 1.87 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-B1PRO Report No.: TZ240605772-BLE Page 1 of 19 Appendix Test Data for BLE (Conducted Measurement) Product Name: Wireless Mechanical Keyboard Trade Mark: Keychron Test Model: B1 Pro FCC ID: 2BGKB-B1PRO 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 0.688 2401.672 2402.360 0.5 PASS BLE_1M Ant1 2440 0.724 2439.652 2440.376 0.5 PASS BLE_1M Ant1 2480 0.740 2479.644 2480.384 0.5 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 2 of 19 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 3 of 19 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Frequency[MHz] OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0283 2401.4998 2402.5281 --- --- BLE_1M Ant1 2440 1.0405 2439.4880 2440.5285 --- --- BLE_1M Ant1 2480 1.0322 2479.4948 2480.5270 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 4 of 19 Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 BLE_1M-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 5 of 19 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 -0.72 ≤30 PASS BLE_1M Ant1 2440 -0.46 ≤30 PASS BLE_1M Ant1 2480 -0.11 ≤30 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 6 of 19 Test Graphs Peak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 7 of 19 Appendix D: Maximum peak power spectral density Test Result TestMode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -10.34 ≤8.00 PASS BLE_1M Ant1 2440 -11.15 ≤8.00 PASS BLE_1M Ant1 2480 -9.86 ≤8.00 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 8 of 19 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 9 of 19 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 -2.04 -51.19 ≤-22.04 PASS BLE_1M Ant1 High 2480 -0.93 -50.5 ≤-20.93 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 10 of 19 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 11 of 19 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 -1.27 -1.27 --- PASS BLE_1M Ant1 2402 30~1000 -1.27 -62.57 ≤-21.27 PASS BLE_1M Ant1 2402 1000~26500 -1.27 -48.95 ≤-21.27 PASS BLE_1M Ant1 2440 0~Referenc e -1.33 -1.33 --- PASS BLE_1M Ant1 2440 30~1000 -1.33 -61.41 ≤-21.33 PASS BLE_1M Ant1 2440 1000~26500 -1.33 -48.73 ≤-21.33 PASS BLE_1M Ant1 2480 0~Referenc e -0.95 -0.95 --- PASS BLE_1M Ant1 2480 30~1000 -0.95 -62.59 ≤-20.95 PASS BLE_1M Ant1 2480 1000~26500 -0.95 -50.22 ≤-20.95 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 12 of 19 Test Graphs BLE_1M-Ant1-2402-0~Reference-PASS BLE_1M-Ant1-2402-30~1000-PASS BLE_1M-Ant1-2402-1000~26500-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 13 of 19 BLE_1M-Ant1-2440-0~Reference-PASS BLE_1M-Ant1-2440-30~1000-PASS BLE_1M-Ant1-2440-1000~26500-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 14 of 19 BLE_1M-Ant1-2480-0~Reference-PASS BLE_1M-Ant1-2480-30~1000-PASS BLE_1M-Ant1-2480-1000~26500-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 15 of 19 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-B1PRO Report No.: TZ240605772-BLE Page 16 of 19 Test Graphs NTNV-BLE_1M-Ant1-2402 NTNV-BLE_1M-Ant1-2440 NTNV-BLE_1M-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BGKB-B1PRO Report No.: TZ240605772-BLE Page 17 of 19 Appendix H: Emissions in Restricted Bands Test Result TestMode Antenna ChName Frequenc y[MHz] Detector Freq [MHz] Result [dBm] Limit [dBm] Result [dBuV/m] Limit [dBuV/m] Verdict BLE_1M Ant1 Low 2402 Peak 2390.000 -54.2 ≤-21.20 41.00 ≤74 PASS BLE_1M Ant1 Low 2402 Peak 2310.000 -55.45 ≤-21.20 39.75 ≤74 PASS BLE_1M Ant1 Low 2402 Peak 2373.290 -49.6 ≤-21.20 45.60 ≤74 PASS BLE_1M Ant1 Low 2402 AV 2390.000 -60.17 ≤-41.20 35.03 ≤54 PASS BLE_1M Ant1 Low 2402 AV 2310.000 -60.48 ≤-41.20 34.72 ≤54 PASS BLE_1M Ant1 Low 2402 AV 2370.035 -59.38 ≤-41.20 35.82 ≤54 PASS BLE_1M Ant1 High 2480 Peak 2483.500 -55.28 ≤-21.20 39.92 ≤74 PASS BLE_1M Ant1 High 2480 Peak 2500.000 -52.65 ≤-21.20 42.55 ≤74 PASS BLE_1M Ant1 High 2480 Peak 2492.560 -49 ≤-21.20 46.20 ≤74 PASS BLE_1M Ant1 High 2480 AV 2483.500 -59.14 ≤-41.20 36.06 ≤54 PASS BLE_1M Ant1 High 2480 AV 2500.000 -59.27 ≤-41.20 35.93 ≤54 PASS BLE_1M Ant1 High 2480 AV 2499.920 -58.57 ≤-41.20 36.63 ≤54 PASS Note： 1. The Antenna Gain is compensated in the graph. 2. The limit in dBm for average detector is conversion from 54dBuV/m, according to 15.209(a). The limit in dBm for peak detector is 20dB above the limit of average detector in dBm. Shenzhe…

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Report No.: TZ240605772-BLE Page 1 of 34 FCC TEST REPORT Test report On Behalf of Keychron Technology (Shenzhen) Co., Ltd. For Wireless Mechanical Keyboard Model No: B1 Pro FCC ID: 2BGKB-B1PRO 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: 2024/6/3 ~ 2024/6/17 Date of Report: 2024/6/18 Report Number: TZ240605772-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.: TZ240605772-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 : B1 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 ............. : 2024/6/3 ~ 2024/6/17 Date of Issue .......................................... : 2024/6/18 Test Result.............................................. : Pass Testing Engineer : (Allen Lai) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ240605772-BLE Page 3 of 34 Revision History Revision Issue Date Revisions Revised By 000 2024/6/18 Initial Issue Andy Zhang Report No.: TZ240605772-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 Measuremen…

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Report No.: TZ240605772-SRD Page 1 of 34 FCC TEST REPORT Test report On Behalf of Keychron Technology (Shenzhen) Co., Ltd. For Wireless Mechanical Keyboard Model No: B1 Pro FCC ID: 2BGKB-B1PRO 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: 2024/6/3 ~ 2024/6/17 Date of Report: 2024/6/18 Report Number: TZ240605772-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.: TZ240605772-SRD 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 : B1 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 ............. : 2024/6/3 ~ 2024/6/17 Date of Issue .......................................... : 2024/6/18 Test Result.............................................. : Pass Testing Engineer : (Allen Lai) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ240605772-SRD Page 3 of 34 Revision History Revision Issue Date Revisions Revised By 000 2024/6/18 Initial Issue Andy Zhang Report No.: TZ240605772-SRD Page 4 of 34 TABLE OF CONTENTS 1 GENERAL INFORMATION ...........................…

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