A3LWCF941MWi Fi BT Transceiver

User’s Manual of WCF941M 1. Introduction WCF941M is a highly integrated single chip which features a low power 2x2 11a/n/ac/ax/be dual band Wi-Fi subsystem and a Bluetooth v5.4 subsystem, offering feature-rich wireless connectivity at high standards, and delivering reliable, cost-effective throughput from an extended distance. The main chips used are Media Tek's MT7925AUN and Realtek's RTL8762EJF. 2. Product Phots 【TOP】 [BOTTOM] 3. Recommended Operating Condition 4. Pin Definition No. Define Description 1 BLE_UART_TX BLE_UART_TX 2 BLE_UART_RX BLE_UART_RX 3 GND Ground 4 WIFI_USB_ON WiFi _USB_suspend 5 WIFI_Time_Sync(TSF) WIFI Time Sync 6 BTWIFI_NRESET WiFi /BT reset 7 WIFI_PWR_DET WiFi Power detection 8 GND Ground 9 USB_Tx+ USB_Tx 10 USB_Tx- USB_Tx 11 GND Ground 12 USB_Rx- USB_Rx 13 USB_Rx+ USB_Rx 14 GND Ground 15 USB_D+ USB_D 16 USB_D- USB_D 17 A5V_PW_WiFi Supply voltage 5V 18 A5V_PW_WiFi Supply voltage 5V 19 A5V_PW_WiFi Supply voltage 5V 20 A5V_PW_WiFi Supply voltage 5V 21 A5V_PW_WiFi Supply voltage 5V 22 WIFI_UART_TXD WIFI UART Tx 23 BT_UART_Debug BT UART Debug 24 PWR_BLE_Reset BLE Reset Approval Statement ● FCC approval statement RF Software restrictions 1. Contention-Based Protocol, as demonstrated in the FCC test report, is permanently embedded in the module and can’t be changed by anyone. 2. Operation of transmitters in the 5.15-5.25GHz, 5.725-5.850GHz and 5.925-7.125GHz bands in this Modular device will only associate and connect with a low-power indoor access point and never directly connect to other client devices. This feature is included in its firmware and can’t be changed by anyone. 3. Operation of transmitters in the 5.25-5.35GHz, 5.47-5.725GHz and 5.925-7.125GHz bands in this Modular device will always initiate transmission under the control of a low-power indoor AP or subordinate except for brief transmissions before joining a network. These short messages will only occur if the client has detected an indoor AP or subordinate operating on a channel. These brief messages will have a time-out mechanism such that if it does not receive a response from an AP it will not continually repeat the request. 4. That transmissions will be lower or equal to the power advertised by the indoor low-power access point or Indoor Client and never above the maximum output power allowed by the FCC grant for equipment class 6ID and 6XD This device complies with Part 15 of the FCC`s 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 undesirable operation. To satisfy FCC exterior labeling requirements, the following text must be placed on the exterior of the end- product. Contains Transmitter module FCC ID: A3LWCF941M 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. 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 the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/ TV technician for help. -The OEM integrator is responsible for ensuring the end-user has no manual instruction to remove or install module. -The module is limited to installation in mobile or fixed applications. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device meets all the other requirements specified in Part 15E, Section 15.407 of the FCC Rules. -RF exposure considerations The module has been certified for integration into products only by OEM integrators under the following condition: -The antenna(s) must be installed such that a minimum separation distance of at least 20cm is maintained between the radiator(antenna) and all persons at all times. -The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter except in a ccordance with FCC multi- transmitter product procedures. This module is intended for OEM integrators only. Per FCC KDB 996369 D03 OEM Manual v01r01 guidance, the following conditions must be strictly followed when using this certified module: KDB 996369 D03 OEM Manual v01r01 rule sections: 2.2 List of applicable FCC rules This module has been tested for compliance with CFR 47 FCC Part 15 B, CFR 47 FCC Part 15 C (15.247, DTS and DSS) and CFR 47 FCC Part 15 E (NII). It is applicable to the modular transmitter 2.3 Summarize the specific operational use conditions The module is tested for standalone mobile RF exposure use condition. Any other usage conditions such as co-location with other transmitter(s) will need a separate reassessment through a class II permissive change application or new certification. Further operation restrictions on the host product include: *Prohibited for control of or Communications with unmanned aircraft systems. This radio transmitter FCC ID: A3LWCF941M has been approved by Federal Communications Commission to operate with the integrated Metal antenna and Chip antenna. Use of any other antenna is strictly prohibited without filing an application for a new system-specific FCC ID. 2.4 Limited module procedures Not applicable for FCC, required for ISED Canada. The module complies with FCC Part 15.247 / Par…

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External Photographs Page 2 of 4 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. External Ant2 Ant0 Ant1 Ant BT Page 3 of 4 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Page 4 of 4 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch.

Appendix II Setup Photographs RADIATED RF MEASUREMENT SETUP (ABOVE 1 GHz) MEASUREMENT POSITION MEASUREMENT POSITION (X axis) MEASUREMENT POSITION (Y axis) MEASUREMENT POSITION (Z axis) RADIATED RF MEASUREMENT SETUP (30MHz~1GHz) RADIATED RF MEASUREMENT SETUP (Below 30MHz) AC CONDUCTED POWER LINE SETUP

Test Environment: Test PCB: Matching Value:

The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. CFR 47 FCC PART 15 SUBPART C ISED RSS-247 Issue 3 TEST REPORT For Wi-Fi/BT Transceiver MODEL NUMBER: WCF941M REPORT NUMBER: 4791508375-RF-1 ISSUE DATE: January 20, 2025 FCC ID:A3LWCF941M IC:649E-WCF941M Prepared for FCC: Samsung Electronics Co Ltd IC: SAMSUNG ELECTRONICS CO. LTD. FCC:19 Chapin Rd., Building D, Pine Brook New Jersey, 07058 United States IC: 129 Samsung-ro, Yeongtong-gu, Suwon-Si Gyeonggi-do 16677 Korea (Republic Of) Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Building 10, Innovation Technology Park, No. 1, Li Bin Road, Song Shan Lake Hi- Tech Development Zone Dongguan, 523808, People’s Republic of China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT NO.: 4791508375-RF-1 Page 2 of 103 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 January 20, 2025 Initial Issue REPORT NO.: 4791508375-RF-1 Page 3 of 103 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC 15.203 RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2013 Clause 6.2 FCC Part 15.207 Pass Conducted Output Power ANSI C63.10-2013 Clause 7.8.5 FCC 15.247 (b) (1) RSS-247 Clause 5.1 (b) Pass 20 dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2013 Clause 6.9.2 FCC 15.247 (a) (1) RSS-247 Clause 5.1 (a) RSS-Gen Clause 6.7 Pass Carrier Hopping Channel Separation ANSI C63.10-2013 Clause 7.8.2 FCC 15.247 (a) (1) RSS-247 Clause 5.1 (b) Pass Number of Hopping Frequency ANSI C63.10-2013 Clause 7.8.3 15.247 (a) (1) III RSS-247 Clause 5.1 (d) Pass Time of Occupancy (Dwell Time) ANSI C63.10-2013 Clause 7.8.4 15.247 (a) (1) III RSS-247 Clause 5.1 (d) Pass Conducted Bandedge and Spurious Emission ANSI C63.10-2013 Clause 6.10.4 & Clause 7.8.8 FCC 15.247 (d) RSS-247 Clause 5.5 Pass Duty Cycle ANSI C63.10-2013, Clause 11.6 None; for reporting purposes only. Pass Radiated Band edge and Spurious Emission ANSI C63.10-2013 Clause 6.3 & 6.5 & 6.6 FCC 15.247 (d) FCC 15.209 FCC 15.205 RSS-247 Clause 5.5 RSS-GEN Clause 8.9 RSS-GEN Clause 8.10 Pass *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART C ISED RSS-247 Issue 3> when <Simple Acceptance> decision rule is applied. REPORT NO.: 4791508375-RF-1 Page 4 of 103 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 6 2. TEST METHODOLOGY ......................................................................................................... 8 3. FACILITIES AND ACCREDITATION ..................................................................................... 8 4. CALIBRATION AND UNCERTAINTY ................................................................................... 9 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 9 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 9 5. EQUIPMENT UNDER TEST ................................................................................................ 10 5.1. DESCRIPTION OF EUT ......................................................................................... 10 5.2. CHANNEL LIST ...................................................................................................... 10 5.3. MAXIMUM POWER ................................................................................................ 10 5.4. TEST CHANNEL CONFIGURATION ...................................................................... 11 5.5. THE WORSE CASE POWER SETTING PARAMETER .......................................... 11 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 12 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 13 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 14 7. ANTENNA PORT TEST RESULTS ..................................................................................... 17 7.1. CONDUCTED OUTPUT POWER .......................................................................... 17 7.2. 20 DB BANDWIDTH AND 99% OCCUPIED BANDWIDTH ..................................... 18 7.3. CARRIER HOPPING CHANNEL SEPARATION ..................................................... 20 7.4. NUMBER OF HOPPING FREQUENCY .................................................................. 22 7.5. TIME OF OCCUPANCY (DWELL TIME) ................................................................. 24 7.6. CONDUCTED BANDEDGE AND SPURIOUS EMISSION ...................................... 26 7.7. DUTY CYCLE .................................................................................…

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1 I N PA Q Te c h n o l o g y C o . , L t d . Last updated in 2024.12.9 Copyright © by Passive System Alliance | All rights reserved. [SSVD] WOC Antenna 2 Content Details - TEST Condition - TEST PCB - Matching Value - VSWR & Smith Chart / 3D Gain data - 2D Radiation Pattern & Gain - 3D Radiation pattern 3 •WOC Metal Antenna and Chip Antenna - Test Chamber : Anechoic Chamber (Address : #610, 102 DONG, 36, Bucheon-ro 198beon-gil, Bucheonsi, Gyeonggi-do 14557, Korea) - Network Analyzer : VSWR - 3D Passive Chamber : Gain, Efficiency and 2D&3D Pattern - Measured by Seong Hun Kim 2024/10/07 •Test Environment 3 TEST Condition please refer to Antenna appendix A 4 Item Measuring Instruments Latest Calibration Schedule 1 Anechoic Chamber 2024-10-07 2 Network Analyzer Agilent 5071BENA 2023-10-24 4 5 TEST PCB Please refer to Antenna appendix A 6 Matching Value Please refer to Antenna appendix A 7 Matching Value 8 Ant#0 9 VSWR & Smith Chart / 3D Gain data_Ant #0 [Smith Chart & VSWR] [3D Gain data] Freq.[MHz] Eff.[%] Avg.[dBi] Peak[dBi] 5150 55.51 -2.561.39 5250 46.15 -3.361.21 5350 30.62 -5.140.97 5450 31.11 -5.070.55 5550 12.09 -9.18-3.46 5650 21.41 -6.69-1.61 5750 17.72 -7.51-2.4 5850 27.82 -5.56-0.36 5925 39.41 -4.041.12 6425 25.68 -5.90.88 6525 30.54 -5.150.95 6875 54.25 -2.661.42 7125 32.8 -4.841.05 10 2D Radiation Pattern & Gain_Ant#0 11 3D Radiation pattern_Ant#0 12 3D Radiation pattern_Ant#0 13 Ant#1 14 VSWR & Smith Chart / 3D Gain data_Ant #1 [Smith Chart & VSWR] [3D Gain data] Freq.[MHz] Eff.[%] Avg.[dBi] Peak[dBi] 5150 67.57 -1.71.25 5250 76.6 -1.161.34 5350 63.98 -1.941.1 5450 42.89 -3.680.68 5550 43.7 -3.60.71 5650 25 -6.02-1.02 5750 38.34 -4.160.8 5850 24.9 -6.04-0.55 5925 37.63 -4.250.76 6425 51.61 -2.871.01 6525 51.28 -2.90.98 6875 83.97 -0.761.52 7125 51.11 -2.920.97 15 2D Radiation Pattern & Gain_Ant#1 16 3D Radiation pattern_Ant#1 17 3D Radiation pattern_Ant#1 18 Ant#2 19 VSWR & Smith Chart / 3D Gain data_Ant #2 [Smith Chart & VSWR] [3D Gain data] Freq.[MHz] Eff.[%] Avg.[dBi] Peak[dBi] 2400 54.13 -2.671.63 2425 56.62 -2.471.97 2450 48.94 -3.11.69 2485 43.62 -3.61.07 20 2D Radiation Pattern & Gain_Ant#2 21 3D Radiation pattern_Ant#2 22 BT 22 23 [Smith Chart & VSWR] [3D Gain data] Freq.[MHz] Eff.[%] Avg.[dBi] Peak[dBi] 2400 21.85 -6.61 -2.17 2415 30.1 -5.21 -0.59 2430 33.25 -4.78 -0.04 2450 38.66 -4.13 0.76 2460 42 -3.77 1.2 2480 37.77 -4.23 0.71 2485 36.85 -4.34 0.58 2 3 VSWR & Smith Chart / 3D Gain data_BT 24 2D Radiation Pattern & Gain_BT 24 25 3D Radiation pattern_BT 25 26 本資料均屬機密，僅供指定之收件人使用，未經寄件人許可不得揭露、複製或散佈本信件。 This message and any attachments are confidential and may be legally privileged. Any unauthorized review, use or distribution by anyone other than the intended recipient is strictly prohibited. If you are not the intended recipient, please immediately notify the sender, completely delete this documents, and destroy all copies. Your cooperation will be highly appreciated. Thank you

The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. FCC RF EXPOSURE REPORT For Wi-Fi/BT Transceiver MODEL NUMBER: WCF941M REPORT NUMBER: 4791508375-RF-5 ISSUE DATE: January 25, 2025 FCC ID:A3LWCF941M Prepared for FCC: Samsung Electronics Co Ltd FCC:19 Chapin Rd., Building D, Pine Brook New Jersey, 07058 United States Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Building 10, Innovation Technology Park, No. 1, Li Bin Road, Song Shan Lake Hi- Tech Development Zone Dongguan, 523808, People’s Republic of China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT NO.: 4791508375-RF-5 Page 2 of 8 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 January 25, 2025 Initial Issue REPORT NO.: 4791508375-RF-5 Page 3 of 8 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS ................................................................................. 4 2. TEST METHODOLOGY ..................................................................................................... 6 3. FACILITIES AND ACCREDITATION ................................................................................. 6 4. REQUIREMENT ................................................................................................................. 7 REPORT NO.: 4791508375-RF-5 Page 4 of 8 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: FCC: Samsung Electronics Co Ltd Address: FCC:19 Chapin Rd., Building D, Pine Brook New Jersey, 07058 United States Manufacturer Information Company Name 1: CHEMTRONICS CO., LTD. Address 1: Company Name 2: Address 2: Company Name 3: Address 3: Company Name 4: Address 4: Company Name 5: Address 5: Company Name 6: Address 6: 35, Buk-ri, Namsa-myeon, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea CHEMTROVINA COMPANYLIMITED Nhon Trach 2 - Loc Khang IZ, Hiep Phuoc Town, Nhon Trach District,, Dong Nai Province, Vietnam SJIT CO., LTD. #54-11, Dongtanhana 1gil, Hwaseong-si, Gyeonggi-Do, Korea SJIT VINA Co., Ltd Lot X2, Ho Nai Industrial Zone, Ho Nai 3 Commune, Trang Bom District, Dong Nai Province, Vietnam Chengdu Xuguang Technology Co.,Ltd. No 86 2nd Scction, Park Road,Longquanyi District, Chengdu City, Sichuan Pravince,P.R.China XUGUANG TECHNOLOGY (VIETNAM) COMPANY LIMITED Factory No.4, Lot CN1, An Duong Industrial Park.Hong Phong Commune, An Duong District, Hai Phong City, Vietnam EUT Information EUT Name: Wi-Fi/BT Transceiver Model: WCF941M Brand: Samsung Sample Received Date: October 18, 2024 Sample Status: Normal Sample ID: 7689992 Date of Tested: November 6, 2024 to January 25, 2025 REPORT NO.: 4791508375-RF-5 Page 5 of 8 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47CFR§2.1091 PASS KDB447498 D01 V06 PASS Prepared By: Checked By: Johnson Liu Kebo Zhang Laboratory Engineer Senior Project Engineer Approved By: Stephen Guo Operations Manager REPORT NO.: 4791508375-RF-5 Page 6 of 8 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 2. TEST METHODOLOGY The tests documented in this report were performed in accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 and KDB 447498 D01 General RF Exposure Guidance v06. 3. FACILITIES AND ACCREDITATION Accreditation Certificate A2LA (Certificate No.: 4102.01) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1187) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. Has been recognized to perform compliance testing on equipment subject to the Commission's Declaration of Conformity (DoC) and Certification rules ISED (Company No.: 21320) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been registered and fully described in a report filed with ISED. The Company Number is 21320 and the test lab Conformity Assessment Body Identifier (CABID) is CN0046. VCCI (Registration No.: G-20192, C-20153, T-20155 and R-20202) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with VCCI, the Membership No. is 3793. Facility Name: Chamber D, the VCCI registration No. is G-20192 and R-20202 Shielding Room B, the VCCI registration No. is C-20153 and T-20155 Note 1: All tests measurement facilities use to collect the measurement data are located at Building 10, Innovation Technology Park, Song Shan Lake Hi tech Development Zone, Dongguan, 523808, China Note 2: The test anechoic chamber in UL Verification Service…

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Internal Photographs Page 2 of 2 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Internal

Mac Address (Including S/N information) Date Code LABEL SIZE: 48*27mm Note: 1. The label will be permanently affixed to the shielding cover. 2.2. Product Label applied using permanent adhesive. It is user-accessible and n 3.3. The FCC label statement will be included in the user manual which will be prin insert and sold with the device. Operation should be limited to indoor use only. Operation should be limited to indoor use only.

Samsung Electronics Co Ltd WCF941M We, Samsung Electronics Co Ltd The product: Wi-Fi/BT Transceiver Model No.: WCF941M FCC ID: A3LWCF941M IC: 649E-WCF941M We declare that the module will only be sold to host integrators and not made available to the general public market. Company Name: Samsung Electronics Co Ltd Contact Name: Jenni Chun Title of Person: General Manager Address: 19 Chapin Rd., Building D, Pine Brook New Jersey, 07058 United States Date: 12/12/2024

Modular Approval Request FCC (Per 15.212) FCC ID: A3LWCF941M Items to be covered Answer From Applicant Comments 1. The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. Yes The EUT module does not contain its shield 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. Yes The module’s transmitter chip utilizes buffered data inputs. 3. The modular transmitter must have its own power supply regulation. Yes The module contains its own power supply regulator chip. 4. The modular transmitter must comply with the antenna and transmission system requirements of §§ 15.203, 15.204(b) and 15.204(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). The “professional installation” provision of § 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. Yes Please refer to WCF941M Manual. 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing for compliance with part 15 requirements. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see § 15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available (see § 15.31(i)). Yes Please refer to the test reports: 4791508375-RF-1 4791508375-RF-2 4791508375-RF-3 4791508375-RF-4 4791508375-RF-5 6. The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number. (A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Yes Please refer to Label and location / WCF941M Manual. Transmitter Module FCC ID: XYZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. (B) If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC certified transmitter module(s).” Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. 7. The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete 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. Yes Please refer to WCF941M Manual. 8. Radio frequency devices operating under the provisions of this part are subject to the radio frequency radiation exposure requirements specified in §§ 1.1307(b), 1.1310, 2.1091, and 2.1093 of this chapter, as appropriate. Applications for equipment authorization of modular transmitters under this section must contain a statement confirming compliance with these requirements. The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. Technical information showing the basis for this statement must be submitted to the Commission upon request. Yes Please refer to the MPE report: 4791508375-RF-6 Note: If compliance with one or more of the numbered requirements, listed above, cannot be demonstrated, it may be possible to obtain a “Limited Modular Approval” (LMA). Company Name: Samsung Electronics Co Ltd Contact Name: Jenni Chun Title of Person: General Manager Address: 19 Chapin Rd., Building D, Pine Brook New Jersey, 07058 United States Date: 12/12/2024

Samsung Electronics Co Ltd DATE : 2024-12-12 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Request for Short-Term Confidentiality Company name: Samsung Electronics Co Ltd FCC ID: A3LWCF941M FCC Part 15 Certification Pursuant to Sections 0.457 and 0.459 of the commission rules, and in accordance with the FCC Public notice dated June 15, 2004 (DA 04-1705), we hereby request short-term confidentiality for the following items prior to marketing the device.: (1)Test Setup Photos (2)External Photos (3)Internal Photos (4)User Manual (5) Antenna appendix A The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Sincerely, Company Name: Samsung Electronics Co Ltd Contact Name: Jenni Chun Title of Person: General Manager Address: 19 Chapin Rd., Building D, Pine Brook New Jersey, 07058 United States

Samsung Electronics Co Ltd Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality FCC ID: A3LWCF941M To Whom It May Concern: Pursuant to the provisions of Sections 0.457 and 0.459 of the Commission’s rules (47 CFR §§ 0.457, 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. Schematic Diagram Block Diagram Theory of…

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