NKR-MB20WLAN/BLE module

Modular Approval Request FCC (KDB 996369 D01 & Part 15.212) FCC ID: NKR-MB20 Items to be covered by Single modular transmitters. Answer from applicant 1. The modular transmitter must have its own RF shielding. The modular has a shielding Case. Please refer to EUT Photo. 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. The device has its buffer 3. The modular transmitter must have its own power supply regulation. The device has its own power supply regulation. 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(b)(c). The antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). Antenna Connectors are NA. And no external amplifier will be used with this modular. 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. This modular is tested under stand-alone configuration. Please refer to Test setup photo. 6. The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number in accordance with 15.212 (a)(1)(vi)(A) / (B). The modular transmitter is labeled with its own FCC ID number. Please refer to label sample and label location. 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. The modular complies with this requirement. Please refer to user manual. 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 1.1310, 2.1091, 2.1093, and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance. Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. The device complies with this requirement. Please refer to RF exposure report. Items to be covered by Split modular transmitters. Answer from applicant 1. The modular transmitter must comply with all requirements of a single modular transmitter except for items (1) & (5) of the above single modular approval requirements. 2. Only the radio front end must be shielded. The physical crystal and tuning capacitors may be located external to the shielded radio elements. The interface between the split sections of the modular system must be digital with a minimum signalling amplitude of 150 mV peak-to-peak. 3. Control information and other data may be exchanged between the transmitter control elements and radio front end. 4. The sections of a split modular transmitter must be tested installed in a host device(s) similar to that which is representative of the platform(s) intended for use. 5. Manufacturers must ensure that only transmitter control elements and radio front end components that have been approved together are capable of operating together. The transmitter module must not operate unless it has verified that the installed transmitter control elements and radio front end have been authorized together. Manufacturers may use means including, but not limited to, coding in hardware and electronic signatures in software to meet these requirements, and must describe the methods in their application for equipment authorization. Note: A limited modular approval (LMA) may be granted for single or split modular transmitters that comply partially with the requirements above. Name and surname of applicant (or authorized representative): __________________ Date: ___02 September 2024____ Signature: ___________________________

Label location Top Side Front Side

Report No.: FA380701-02 Page : 1 of 7 Report Version: Rev. 01 FCC RF Exposure Report FCC ID : NKR-MB20 Product Description : WLAN/BLE module Model No. : DHSK-MB20 Brand Name : Wistron NeWeb Corporation Applicant : Wistron NeWeb Corporation Address : 20 Park Avenue II, Hsinchu Science Park, Hsinchu 308,Taiwan, R.O.C. Standard : 47 CFR FCC Part 2.1091 Received Date : Apr. 02, 2024 Tested Date : Jul. 15 ~ Jul. 18, 2024 We, International Certification Corporation, would like to declare that the tested sample has been evaluated and in compliance with the requirement of the above standards. The test results contained in this report refer exclusively to the product. It shall not be reproduced except in full without the written approval of our laboratory. Reviewed by: Approved by: Along Chen / Assistant Manager Gary Chang / Manager Report No.: FA380701-02 Page : 2 of 7 Report Version: Rev. 01 Table of Contents 1 GENERAL DESCRIPTION .................................................................................................................... 4 1.1 INFORMATION ...................................................................................................................................... 4 2 RF EXPOSURE TEST EXEMPTIONS ................................................................................................... 5 2.1 1-mW TEST EXEMPTION ..................................................................................................................... 5 2.2 SAR-BASED EXEMPTION .................................................................................................................... 5 2.3 MPE-BASED EXEMPTION .................................................................................................................... 5 2.4 REFERENCE GUIDANCE ..................................................................................................................... 6 2.5 DEVIATION FROM TEST STANDARD AND MEASUREMENT PROCEDURE ................................... 6 2.6 MEASUREMENT UNCERTAINTY ......................................................................................................... 6 2.7 EXEMPTION CALCULATION ................................................................................................................ 6 3 TEST LABORATORY INFORMATION ................................................................................................. 7 Report No.: FA380701-02 Page : 3 of 7 Report Version: Rev. 01 Release Record Report No. Version Description Issued Date FA380701-02 Rev. 01 Initial issue Aug. 16, 2024 Report No.: FA380701-02 Page : 4 of 7 Report Version: Rev. 01 1 General Description 1.1 INFORMATION 1.1.1 Product Details The following models are provided to this EUT. Brand Name Model Name Product Name Product Description Description Wistron NeWeb Corporation DHSK-MB20 81DHSK08.G01 WLAN/BLE module LED *0, Button*0, level shifter*4, connector*2 81DHSK08.G02 LED *0, Button*0, level shifter*1, connector*1 81DHSK08.G03 LED *2, Button*1, level shifter*4, connector*2  Remark: RF PCB layout and RF components of all the above listed models are the same, no change. Report No.: FA380701-02 Page : 5 of 7 Report Version: Rev. 01 2 RF Exposure Test Exemptions 2.1 1-mW TEST EXEMPTION Available maximum time-averaged power is no more than 1 mW. 2.2 SAR-BASED EXEMPTION This exemption is applicable to the frequency range between 300 MHz and 6 GHz, with test separation distances between 0.5 cm and 40 cm, and for all RF sources in fixed, mobile, and portable device exposure conditions. The maximum time-averaged power or effective radiated power (ERP), whichever is greater, ≤ Pth Pth (mW) = ERP 20cm (d/20) x d≤20cm Pth (mW) = ERP 20cm 20 cm < d ≤40cm Where = - log 10 Pth (mW) = ERP 20cm (mW) = 2040f 0.3GHz ≤ f < 1.5 GHz Pth (mW) = ERP 20cm (mW) = 3060 1.5GHz ≤ f < 6 GHz Frequency (MHz) Power Thresholds mW dBm 663 1353 31.31 699 1426 31.54 704 1436 31.57 777 1585 32.00 824 1681 32.26 902 1840 32.65 1500 ~ 6000 3060 34.86 2.3 MPE-BASED EXEMPTION For a much wider frequency range, from 300 kHz to 100 GHz, applicable for separation distances greater or equal to λ/2π, where λ is the free-space operating wavelength in meters. Radio Source Frequency Minimum Distance Threshold ERP F L MHz F H MHz λ L / 2π λ H / 2π W 0.3 - 1.34 159 m - 35.6 m 1920 R 2 1.34 - 30 35.6 m - 1.6 m 3450 R 2 /f 2 30 - 300 1.6 m - 159 mm 3.83 R 2 300 - 1500 159 mm - 31.8 mm 0.0128 R 2 f 1500 - 100000 31.8 mm - 0.5 mm 19.2 R 2 Note: R is the antenna-person separation distance. Report No.: FA380701-02 Page : 6 of 7 Report Version: Rev. 01 2.4 REFERENCE GUIDANCE 447498 D04 Interim General RF Exposure Guidance v01. 2.5 DEVIATION FROM TEST STANDARD AND MEASUREMENT PROCEDURE None 2.6 MEASUREMENT UNCERTAINTY The measurement uncertainties given below are based on a 95% confidence level (based on a coverage factor (k=2)). Parameters Uncertainty Conducted power ±0.808 dB Declaration of Conformity: The test results with all measurement uncertainty excluded are presented in accordance with the regulation limits or requirements declared by manufacturers. Comments and Explanations: The declared of product specification for EUT presented in the report are provided by the manufacturer, and the manufacturer takes all the responsibilities for the accuracy of product specification. 2.7 EXEMPTION CALCULATION Frequency Range (MHz) Maximum Conducted Power (dBm) Maximum Tune Up Limit (dBm) Antenna Gain (dBi) EIRP (dBm) ERP (dBm) ERP (mW) SAR-Based Exemption Thresholds (mW) Ratio Pass/ Fail 2412-2462 WLAN 22.76 23.0 1.13 24.13 21.98 157.76 3060 0.052 Pass 2402-2480 BLE 8.59 9.0 1.13 10.13 7.98 6.28 3060 0.0021 Pass Note: Minimum separation distance = 20 cm. Report No.: FA380701-02 Page : 7 of 7 Report Version: Rev. 01 3 Test laboratory information Established in 2012, ICC provides foremost EMC & RF Testing and advisory consultation services by our skilled engineers and technicians. Our services employ a wide variety of advance…

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□Normal □Internal Use ■Confidential □Restricted Confidential DHSK-MB20 ES0 Antenna Test Report (Optimized in open space) Dec. 16. 2022 Joe CJ Huang 20 Park Ave. II, Hsinchu Science Park, Hsinchu 308, Taiwan. 2 □Normal □Internal Use ■Confidential □Restricted Confidential Antenna Performance Summary –VSWR •Under 2 for 2.4GHz –Average radiation efficiency •55%~63% for 2.4GHz –Peak gain •Max 1.13dBi for 2.4GHz Ant0Ant1 3 □Normal □Internal Use ■Confidential □Restricted Confidential VSWR 4 □Normal □Internal Use ■Confidential □Restricted Confidential Efficiency & Peak Gain Frequency (MHz)240024502500Avg. Ant.0 Efficiency55%58%57%57% Average gain (dBi)-2.60-2.37-2.44 Peak gain (dBi)0.540.771.13 Peak Gain@ Theta= -152° Phi=110° Theta= 118° Phi=129° Theta= 113° Phi=135° Ant.1 Efficiency60636161% Average gain (dBi)-2.22-2.01-2.15 Peak gain (dBi)0.030.020.23 Peak Gain@ Theta= 28° Phi=82° Theta= 31° Phi=82° Theta= 31° Phi=79° The above peak gain was measured at the above angle using the substitution method. The substitution method involves setting up our calibrated reference antenna over a radiated path across the chamber, then normalizing (or “zeroing”) that path loss to 0 dB. Then we substitute our antenna in place of our reference antenna, and re-measure the change in path loss. By simply adding our reference antenna’s calibrated gain (in dBi) to the change in path loss, to determine the antenna gain in dBi. 5 □Normal □Internal Use ■Confidential □Restricted Confidential Radiation Pattern for Ant0 X -Y Z ANT-1ANT-0 Bottom side 6 □Normal □Internal Use ■Confidential □Restricted Confidential Radiation Pattern for Ant1 X -Y Z ANT-1ANT-0 Bottom side 7 □Normal □Internal Use ■Confidential □Restricted Confidential Measurement Setup & Test Method SG 64 uses analog RF signal generators to emit EM waves from the probe array to the antenna under test (AUT) or vice versa. It uses the NPAC as an RF receiver for antenna measurements. The NPAC also drives the electronic scanning of the probe array. The NPAC includes the fastest and most accurate sources and receivers on the market. 8 □Normal □Internal Use ■Confidential □Restricted Confidential Test Procedure & SW ⚫Place the device at the center of the chamber. ⚫Connect the antenna cable to RF cable of the chamber ⚫Run SatimotestSW ( NPAC Spherical Measurement, v1.5.4 (GIT E6965664)) which is Satimo’sproprietarySW. ⚫Get 3D data in 2.8125 degree step from phi 0°~360°and theta 90°~ +90°, including efficiency, peak gain, 2D & 3D radiation pattern. ⚫This is passive measurement, which means the device is off and not in any operating mode. DUT 9 □Normal □Internal Use ■Confidential □Restricted Confidential Calibration and Measurement Equipment List Note: 1.There’re 63 set antenna probes in WNC’s SG64 test chamber. 2.This antenna test chamber is located at WNC (address: 20 Park Ave. II, Hsinchu Science Park, Hsinchu 300, Taiwan) DeviceType/ModelS/NManufacturerCharacteristicsCalibrated DateCalibrated until SG64 antenna test chamberStandardSG64MVG400MHz ~ 6GHz2024/03/302025/03/30 Turn tableCustomization-Machinery Dept.-2024/03/302025/03/30 New probe array controllerN/A1102341-4535MVG400MHz ~ 6GHz2024/03/302025/03/30 Power supply unitN/A1103211-13204MVG-2024/03/302025/03/30 Active switching unitN/A1102347-7214MVG400MHz ~ 6GHz2024/03/302025/03/30 Tx amplification unitN/A1102527-5909MVG400MHz ~ 6GHz2024/03/302025/03/30 Rx amplification unitN/A1102536-3823MVG400MHz ~ 6GHz2024/03/302025/03/30 Transfer switching unitN/A1102183-3351MVG400MHz ~ 6GHz2024/03/302025/03/30 Mixer unitN/A1102545-7208MVG400MHz ~ 6GHz2024/03/302025/03/30 Power and control unitN/A1102706-7209MVG-2024/03/302025/03/30 Antenna probeDP 400-6000-MVG400MHz ~ 6GHz2024/03/302025/03/30 Cable 13.7m –400MHz to 18GHzSS40200100A1F5A1XXSWoken-2024/03/302025/03/30 Temperature & Humidity meterHTC-01-Metravi-2024/03/302025/03/30 10 □Normal □Internal Use ■Confidential □Restricted Confidential Manufacturer Manufacturer: Wistron NeWebCorporation (WNC) Address:20 Park Ave. II, Hsinchu Science Park, Hsinchu 300, Taiwan. TEL:+886 3 666 7799 製造商:啟碁科技股份有限公司 地址:300新竹科學園區園區二路20號 電話:+886 3 666 7799

Report No.: FR380701-02AC Page : 1 of 19 Report Version: Rev. 01 FCC Test Report FCC ID : NKR-MB20 Product Description : WLAN/BLE module Model No. : DHSK-MB20 Brand Name : Wistron NeWeb Corporation Applicant : Wistron NeWeb Corporation Address : 20 Park Avenue II, Hsinchu Science Park, Hsinchu 308,Taiwan, R.O.C. Standard : 47 CFR FCC Part 15.247 Received Date : Apr. 02, 2024 Tested Date : Jul. 15 ~ Jul. 18, 2024 We, International Certification Corporation, would like to declare that the tested sample has been evaluated and in compliance with the requirement of the above standards. The test results contained in this report refer exclusively to the product. It shall not be reproduced except in full without the written approval of our laboratory. Reviewed by: Approved by: Along Chen / Assistant Manager Gary Chang / Manager Report No.: FR380701-02AC Page : 2 of 19 Report Version: Rev. 01 Table of Contents 1 GENERAL DESCRIPTION .................................................................................................................... 5 1.1 Information.............................................................................................................................................. 5 1.2 Local Support Equipment List ................................................................................................................ 7 1.3 Test Setup Chart .................................................................................................................................... 7 1.4 The Equipment List ................................................................................................................................ 8 1.5 Test Standards ....................................................................................................................................... 9 1.6 Reference Guidance .............................................................................................................................. 9 1.7 Deviation from Test Standard and Measurement Procedure ................................................................. 9 1.8 Measurement Uncertainty .................................................................................................................... 10 2 TEST CONFIGURATION ..................................................................................................................... 11 2.1 Testing Facility ..................................................................................................................................... 11 2.2 The Worst Test Modes and Channel Details ....................................................................................... 11 3 TRANSMITTER TEST RESULTS ....................................................................................................... 12 3.1 6dB and Occupied Bandwidth .............................................................................................................. 12 3.2 Conducted Output Power ..................................................................................................................... 13 3.3 Power Spectral Density ........................................................................................................................ 14 3.4 Unwanted Emissions into Restricted Frequency Bands ...................................................................... 15 3.5 Emissions in Non-Restricted Frequency Bands ................................................................................... 17 3.6 AC Power Line Conducted Emissions ................................................................................................. 18 4 TEST LABORATORY INFORMATION ............................................................................................... 19 Appendix A. 6dB and Occupied Bandwidth Appendix B. Conducted Output Power Appendix C. Power Spectral Density Appendix D. Unwanted Emissions into Restricted Frequency Bands Appendix E. Emissions in Non-Restricted Frequency Bands Appendix F. AC Power Line Conducted Emissions Report No.: FR380701-02AC Page : 3 of 19 Report Version: Rev. 01 Release Record Report No. Version Description Issued Date FR380701-02AC Rev. 01 Initial issue Aug. 16, 2024 Report No.: FR380701-02AC Page : 4 of 19 Report Version: Rev. 01 Summary of Test Results FCC Rules Test Items Measured Result 15.207 AC Power Line Conducted Emission [dBuV]: 0.491MHz 32.47 (Margin -13.67dB) - AV Pass 15.247(d) 15.209 Unwanted Emissions [dBuV/m at 3m]: 2.39GHz 52.84 (Margin -1.16dB) - AV Pass 15.247(b)(3) Conducted Output Power Max Power [dBm]: 25.86 Pass 15.247(a)(2) 6dB Bandwidth Meet the requirement of limit Pass 15.247(e) Power Spectral Density Meet the requirement of limit Pass 15.203 Antenna Requirement Meet the requirement of limit Pass Declaration of Conformity: The test results with all measurement uncertainty excluded are presented in accordance with the regulation limits or requirements declared by manufacturers. Comments and Explanations: The declared of product specification for EUT presented in the report are provided by the manufacturer, and the manufacturer takes all the responsibilities for the accuracy of product specification. Report No.: FR380701-02AC Page : 5 of 19 Report Version: Rev. 01 1 General Description 1.1 Information 1.1.1 Product Details The following models are provided to this EUT. Brand Name Model Name Product Name Product Description Description Wistron NeWeb Corporation DHSK-MB20 81DHSK08.G01 WLAN/BLE module LED *0, Button*0, level shifter*4, connector*2 81DHSK08.G02 LED *0, Button*0, level shifter*1, connector*1 81DHSK08.G03 LED *2, Button*1, level shifter*4, connector*2  Remark: RF PCB layout and RF components of all the above listed models are the same, no change. 1.1.2 Specification of the Equipment under Test (EUT) RF General Information Frequency Range (MHz) IEEE Std. 802.11 Ch. Freq. (MHz) Channel Number Transmit Chains (N TX ) Data Rate / MCS 2400-2483.5 b 241…

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Report No.: FR380701-02AE Page : 1 of 19 Report Version: Rev. 01 FCC Test Report FCC ID : NKR-MB20 Product Description : WLAN/BLE module Model No. : DHSK-MB20 Brand Name : Wistron NeWeb Corporation Applicant : Wistron NeWeb Corporation Address : 20 Park Avenue II, Hsinchu Science Park, Hsinchu 308,Taiwan, R.O.C. Standard : 47 CFR FCC Part 15.247 Received Date : Apr. 02, 2024 Tested Date : Jul. 15 ~ Jul. 18, 2024 We, International Certification Corporation, would like to declare that the tested sample has been evaluated and in compliance with the requirement of the above standards. The test results contained in this report refer exclusively to the product. It shall not be reproduced except in full without the written approval of our laboratory. Reviewed by: Approved by: Along Chen / Assistant Manager Gary Chang / Manager Report No.: FR380701-02AE Page : 2 of 19 Report Version: Rev. 01 Table of Contents 1 GENERAL DESCRIPTION .................................................................................................................... 5 1.1 Information.............................................................................................................................................. 5 1.2 Local Support Equipment List ................................................................................................................ 7 1.3 Test Setup Chart .................................................................................................................................... 7 1.4 Test Equipment List and Calibration Data .............................................................................................. 8 1.5 Test Standards ....................................................................................................................................... 9 1.6 Reference Guidance .............................................................................................................................. 9 1.7 Deviation from Test Standard and Measurement Procedure ................................................................. 9 1.8 Measurement Uncertainty .................................................................................................................... 10 2 TEST CONFIGURATION ..................................................................................................................... 11 2.1 Testing Facility ..................................................................................................................................... 11 2.2 The Worst Test Modes and Channel Details ....................................................................................... 11 3 TRANSMITTER TEST RESULTS ....................................................................................................... 12 3.1 6dB and Occupied Bandwidth .............................................................................................................. 12 3.2 Conducted Output Power ..................................................................................................................... 13 3.3 Power Spectral Density ........................................................................................................................ 14 3.4 Unwanted Emissions in Restricted Frequency Bands........................................................................ 15 3.5 Emissions in non-restricted Frequency Bands ..................................................................................... 17 3.6 AC Power Line Conducted Emissions ................................................................................................. 18 4 TEST LABORATORY INFORMATION ............................................................................................... 19 Appendix A. 6dB and Occupied Bandwidth Appendix B. Conducted Output Power Appendix C. Power Spectral Density Appendix D. Unwanted Emissions into Restricted Frequency Bands Appendix E. Emissions in Non-Restricted Frequency Bands Appendix F. AC Power Line Conducted Emissions Report No.: FR380701-02AE Page : 3 of 19 Report Version: Rev. 01 Release Record Report No. Version Description Issued Date FR380701-02AE Rev. 01 Initial issue Aug. 16, 2024 Report No.: FR380701-02AE Page : 4 of 19 Report Version: Rev. 01 Summary of Test Results FCC Rules Test Items Measured Result 15.207 AC Power Line Conducted Emissions [dBuV]: 0.491MHz 31.29 (Margin -14.85dB) - AV Pass 15.247(d) 15.209 Unwanted Emissions [dBuV/m at 3m]: 4.96GHz 45.15 (Margin -8.85dB) - QP Pass 15.247(b)(3) Conducted Output Power Power [dBm]: 8.79 Pass 15.247(a)(2) 6dB Bandwidth Meet the requirement of limit Pass 15.247(e) Power Spectral Density Meet the requirement of limit Pass 15.203 Antenna Requirement Meet the requirement of limit Pass Declaration of Conformity: The test results with all measurement uncertainty excluded are presented in accordance with the regulation limits or requirements declared by manufacturers. Comments and Explanations: The declared of product specification for EUT presented in the report are provided by the manufacturer, and the manufacturer takes all the responsibilities for the accuracy of product specification. Report No.: FR380701-02AE Page : 5 of 19 Report Version: Rev. 01 1 General Description 1.1 Information 1.1.1 Product Details The following models are provided to this EUT. Brand Name Model Name Product Name Product Description Description Wistron NeWeb Corporation DHSK-MB20 81DHSK08.G01 WLAN/BLE module LED *0, Button*0, level shifter*4, connector*2 81DHSK08.G02 LED *0, Button*0, level shifter*1, connector*1 81DHSK08.G03 LED *2, Button*1, level shifter*4, connector*2  Remark: RF PCB layout and RF components of all the above listed models are the same, no change. 1.1.2 Specification of the Equipment under Test (EUT) RF General Information Frequency Range (MHz) Bluetooth Mode Ch. Freq. (MHz) Channel Number Data Rate 2400-2483.5 LE 2402-2480 0-39 [40] 1 Mbps Note: Bluetooth LE (Lo…

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