2ACCRWL501Multimode Module

ShangHai Ehong Technology Co.,Ltd. QCA4020 Module (WL501) Product Specification WL501 October 31, 2018 Ehong is a trademark of Ehong Solutions, registered in the United States and other countries. Other product and brand names may be trademarks or registered trademarks of their respective owners. This technical data may be subject to U.S. and international export, re-export, or transfer ( export ) laws. Diversion contrary to U.S. and international law is strictly prohibited. ShangHai Ehong Technology Co.,Ltd. 2018 ShangHai Ehong Technology Co.,Ltd. All rights reserved. ShangHai Ehong Technology Co.,Ltd. (Ehong) and its affiliates reserve the right to make any updates, corrections and any other modifications to its documentation. The information provided in this document represents Ehong’s knowledge and belief as of the date this document is provided. Ehong makes no representation or warranty as to the accuracy of such information, and Ehong assumes no liability for any use of the information in this documentation. You should obtain the latest information before placing orders for any hardware, and you should verify that such information is current and complete. Information published by Ehong regarding any third-party products does not constitute a license to use such products or a warranty or endorsement thereof. Use of such information may require a license from a third party under the intellectual property rights of such third party, or a license from Ehong or its affiliates under the intellectual property rights of Ehong or its affiliates. All hardware, equipment, components or products are sold subject to Ehong’s (or such other Ehong affiliated company that is designated by Ehong) standard terms and conditions of sale, as applicable. Notwithstanding anything to the contrary in this documentation or otherwise: (i) you do not receive any rights, licenses, or immunities from suit under any patents of Ehong Solutions, Ehong or their respective affiliates as a result of receiving this documentation (whether expressly, impliedly, by virtue of estoppel or exhaustion, or otherwise), (ii) without limitation, you shall not use or sell any wireless wide area network baseband integrated circuit that you purchase or acquire from Ehong or any product that incorporates any such baseband integrated circuit (whether alone or in combination with any other software or components) without a separate license or non-assertion covenant from Ehong Solutions in respect of or under all applicable patents, (iii) nothing in this document modifies or abrogates your obligations under any license or other agreement between you and Ehong Solutions, including without limitation any obligation to pay any royalties, and (iv) you will not contend that you have obtained any right, license, or immunity from suit with respect to any patents of Ehong Solutions, Ehong or their respective affiliates under or as a result of receiving this documentation (whether expressly, impliedly, by virtue of estoppel or exhaustion, or otherwise). Ehong Confidential 2 Revision history RevisionDateDescription A October 2018 Initial release Ehong Confidential 3 Contents 1 Introduction............................................................................................................................................. 5 2 Hardware specification......................................................................................................................... 7 2.1 WL501 module pinout................................................................................................................................................ 7 2.2 WL501 interface summary...................................................................................................................................... 12 2.3 Bootstrap signals...................................................................................................................................................... 13 2.4 Electrical characteristics.......................................................................................................................................... 13 2.4.1 General DC electrical characteristics................................................................................................. 13 2.4.2 WL501 2.4 GHz power measurements.............................................................................................. 14 2.4.3 WL501 5 GHz power measurements................................................................................................. 14 2.4.4 BLE power measurements.................................................................................................................. 15 2.4.5 802.15.4 power measurements.................................................................................................................. 15 3 Mechanical interface specification.................................................................................................. 16 3.1 WL501 module dimensions..................................................................................................................................... 16 Figures Figure 1-1 WL501 block diagram.................................................................................................................................................... 5 Figure 2-1 WL501 front view............................................................................................................................................................ 7 Figure 2-2 WL501 back view........................................................................................................................................................... 8 Figure 2-3 WL501 pinout definition................................................................................................................................................. 9 Figure 3-1 WL501 module dimensions...............................................…

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Date: 2020-05-28 Sincerely, Signature: Typed or Printed Name: Tony Tang Title: Manager Attestation Letter To Whom It May Concern, The chip QCA4020 installed in our product Multimode Module (model name: EH-WL501, FCC ID: 2ACCRWL501 ), which supports 2.4G Wi-Fi, BLE 1MHz, BLE 2MHz, Zigbee(2405-2475MHz), 5G Wi‐Fi Band1(5150‐5250MHz), Band2(5250-5350MHz), Band3(5470‐5725MHz), Band4(5725‐5850MHz) functions. But for this product, it only activates 2.4G Wi-Fi, BLE 1MHz, BLE 2MHz, Zigbee(2405-2475MHz), 5G Wi‐Fi Band1and Band4 functions, the other functions are disabled by using the software. Please contact me if there is need for any additional clarification or information. Company Name: ShangHai Ehong Technology Co.,Ltd. Add:Suite501,No.3 building,No.439 Jinglian road,Minhang district,Shanghai,China Tel: 021-61263536 Fax: 021-61263536 E-mail: [email protected] FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046

QA-FR-170-B Company: ShangHai Ehong Technology Co.,Ltd. Add: Suite501,No.3 building,No.439 Jinglian road,Minhang district,Shanghai,China Tel: 021-61263536 Fax: 021-61263536 Email: [email protected] FCC Authorization Date: 2020-05-28 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, ShangHai Ehong Technology Co.,Ltd., the undersigned, Hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Typed or Printed Name: Tony Tang Title: Manager

Company Name: ShangHai Ehong Technology Co.,Ltd. Add:Suite501,No.3 building,No.439 Jinglian road,Minhang district,Shanghai,China Tel: 021-61263536 Fax: 021-61263536 E-mail: [email protected] FCC Confidential Authorization Date:2020-05-28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ACCRWL501 To: whom it may concern, In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, ShangHai Ehong Technology Co.,Ltd. hereby requests long-term confidential treatment of information accompanying this application as outlined below: Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Typed or Printed Name: Tony Tang Title: Manager

Applicant ShangHai Ehong Technology Co.,Ltd. FCC ID: 2ACCRWL501 Section 15.212 Modular Transmitters Request for Modular Approval  Request for Limited Modular Approval   RequirementsEUT ConditionsComply(Y/N) Single Modular Approval Requirements 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. Refer to external photos. This module does have shield cover. Y 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. All inputs to the modules are buffered through logic or microprocessor inputs. Refer to Schematics. Y 3 The modular transmitter must have its own power supply regulation. The Module uses the chip QCA4020 with built-in power management components, the module rated power is 3.3V power, Refer to schematics. Y 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. The modular transmitter has PCB antennas for 2.4G WiFi/5G WiFi/BLE/Zigbee, Refer to internal photo. Y Company: ShangHai Ehong Technology Co.,Ltd. Add: Suite501,No.3 building,No.439 Jinglian road,Minhang district,Shanghai,China Tel: 021-61263536 Fax: 021-61263536 E-mail: ton [email protected] 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 connect ed to the module during testing shall be unmodified and commercially available (see §15.31(i)). The modular transmitter is connected to the controlled board when testing. Please refer to setup photo. Y 6 If using a permanently affixed label, the modular transmitter must be la beled 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:“ContainsTransmitter Module FCC ID: 2ACCRWL501” Any similar wording that expresses t he same meaning may be used. The Grantee ma y either provide such a label, an example of which must be included Refer to the label. Y 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. 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. Refer to manual Y 8 The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. The EUT comply with RF exposure requirements § 2.1091.If the device built into a host as a portable usage, the RF exposure evaluation may be required as specified by § 2.1093. Y Sincerely Yours, Sig nature: Typed or Printed Name: Tony Tang Title: Manager

EXHIBIT A - EUT EXTERNAL PHOTOGRAPHS

Model: EH-WL501 FCC ID: 2ACCRWL501 IC: 22745-WL501

EXHIBIT B - EUT INTERNAL PHOTOGRAPHS BLE/Zigbee Antenna 2.4G Wi-Fi/ 5G Wi-Fi Antenna

Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RSHF200528001-00B FCC Part 15.247 Page 15 of 104 FCC §1.1310 & §2.1091- MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart 15.247 (i) and subpart 1.1310, 2.1091 systems operating under the provisions of this section shall be operated in a manner that ensures the public is not exposed to RF energy level in excess of the communication guidelines. Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f²) 30 30-300 27.5 0.073 0.2 30 300-1500 / f/1500 30 1500-100,000 / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density Calculated Formulary: Predication of MPE limit at a given distance S = PG/4πR² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); For simultaneously transmit system, the calculated power density should comply with: Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RSHF200528001-00B FCC Part 15.247 Page 16 of 104 Calculated Data (worst case): Mode Frequency (MHz) Maximum Antenna Gain Tune-up Conducted Power Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric)(dBm)(mW) 2.4G WiFi 802.11b 2412-2462 1.0 1.26 23.00199.53 20 0.0500 1.0 2.4G WiFi 802.11g 1.0 1.26 24.00251.19 20 0.0630 1.0 802.11n-HT20 1.0 1.26 23.50223.87 20 0.0561 1.0 802.11n-HT40 2422-2452 1.0 1.26 22.00158.49 20 0.0397 1.0 BLE(1Mbps) 2402-2480 1.0 1.26 2.50 1.78 20 0.0004 1.0 BLE(2Mbps) 2402-2480 1.0 1.26 1.50 1.41 20 0.0004 1.0 Zigbee 2405~2475 1.0 1.26 2.00 1.58 20 0.0004 1.0 5G WiFi 5150~5250 1.0 1.26 22.00158.49 20 0.0397 1.0 5G WiFi 5725~5850 1.0 1.26 19.0079.43 20 0.0199 1.0 Note: 2.4G Wi-Fi/5G Wi-Fi and BLE/Zigbee can transmit simultaneously; the worst condition as below: =0.0630/1.00+0.0004/1.00=0.0634 < 1.0 Conclusion: The EUT meets exemption requirement- RF exposure evaluation greater than 20cm distance specified in § 2.1091. If the device built into a host as a portable usage, the additional RF exposure evaluation may be required as specified by§ 2.1093.

FCC PART 15.247 TEST REPORT For ShangHai Ehong Technology Co.,Ltd. Suite501,No.3 building,No.439 Jinglian road,Minhang district,Shanghai,China FCC ID: 2ACCRWL501 Report Type: Original Report Product Type: Multimode Module Test Engineer: Chao Gao Re port Number: RSHF200528001-00B Re port Date: 2020-09-29 Reviewed B y: Oscar Ye EMC Mana ger Prepared By: Bay Area Compliance Laboratories Corp. (Kunshan) No.248 Chenghu Road, Kunshan, Jiangsu province, China Tel: +86-0512-86175000 Fax: +86-0512-88934268 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RSHF200528001-00B FCC Part 15.247 Page 2 of 104 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................. 11 EXTERNAL I/O CABLE ................................................................................................................................................ 11 BLOCK DIAGRAM OF TEST SETUP .............................................................................................................................. 11 SUMMARY OF TEST RESULTS ............................................................................................................................. 13 TEST EQUIPMENT LIST ......................................................................................................................................... 14 FCC §1.1310 & §2.1091- MAXIMUM PERMISSIBLE EXPOSURE (MPE) ............................................................ 15 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 17 APPLICABLE STANDARD ............................................................................................................................................ 17 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 17 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 18 APPLICABLE STANDARD ............................................................................................................................................ 18 EUT SETUP ................................................................................................................................................................ 18 EMI TEST RECEIVER SETUP ....................................................................................................................................... 18 TEST PROCEDURE ...................................................................................................................................................... 19 FACTOR & OVER LIMIT CALCULATION ...................................................................................................................... 19 TEST RESULTS SUMMARY .......................................................................................................................................... 19 TEST DATA ................................................................................................................................................................ 19 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 28 APPLICABLE STANDARD ............................................................................................................................................ 28 EUT SETUP ................................................................................................................................................................ 28 EMI TEST RECEIVER SETUP ....................................................................................................................................... 29 TEST PROCEDURE ...................................................................................................................................................... 29 CORRECTED AMPLITUDE & MARGIN CALCULATION ........................................................................…

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EXHIBIT C - TEST SETUP PHOTOGRAPHS Conducted Emissions - Front Side Conducted Emissions - Rear Side Radiated Emissions View (Below 1GHz) Radiated Emissions View (1GHz-18GHz) Radiated Emissions View (18GHz-40GHz)