2AYX4-PER200Peraso 60 GHz radio Module. Quetzal based

60Ghz Radio Module User Guide Product Code: PER200 Date: 2/26/2021 of 114 of 214 of 314 of 414 of 514 of 614 of 714 of 814 of 914 of 1014 of 1114 of 1214 of 1314 of 1414

Item Requirements EUT 1 Have its own RF shielding Device is equipped with metal shielding to cover RF section. Refer to external photos. 2 Have buffered modulation/data inputs (if such inputs are provided) All inputs to the modules are buffered through logic and microprocessor inputs. 3 Have its own power supply regulation Module chipset incorporates voltage regulation to transceiver circuitry 4 Meet the antenna requirements of section 15.203 The device has a dedicated antenna. 5 Demonstrate compliance in a stand-alone configuration Device is tested in a test fixture in a standalone configuration 6 The licensed module must have a FCC ID label on the module itself. That FCC ID label must be visible through a window on the final device or it must be visible when an access panel, door or cover is easily removed. If not, a second label must be placed on the outside of the final device that contains the following text: Contains “FCC ID: 2AYX4-PER200” FCC ID label format will be included in the filling. Host ID label will be displayed on the host system. 7 The module must comply with all specific rules applicable to the transmitter. The grantee must provide comprehensive instructions to explain compliance requirements. The required FCC rules has been fulfilled and all instructions of maintaining compliance are clearly stated in the user manual. 8 The module must comply with RF exposure requirements. See FCC Rules. Spread Spectrum transmitters must comply with RF exposure limits in 15.247. For mobile or portable applications, OEM integrators need SAR evaluation and an own FCC ID. Request for Modular Approval FCC ID: 2AYX4-PER200; Thank you for your attention to this matter. Yours Sincerely, Chad Dewey, VP of Engineering

WWelink Date: February 26th, 2021 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: Welink Communications, the undersigned, hereby authorizes Mr s. Wendy Zhan fr om Shenzhen Morlab Communications Technology Co., Ltd., to act on the behalf o f the Welink solely in ma tters relating to the application fo r an FCC equipment authorization for FCC ID: 2AYX4-PER200 including the signing of documents in connection with this Application. Necessary acts carried out Shenzhen Morlab C ommunications Te chnology Co., Ltd. on our beh alf of the Welink in connection with the Application shall have the same effect as acts of Welink. Welink also hereby certify that no party to this application is subject to a denial of benefits, including F CC benefits, pursuant to Section 5301 of the Anti­Drug Abuse Act of 1988, 21 U.S.C. 862. Thank you for your attention to this matter. Yours Sincerely, Signatory: 忙z Contact name: Muhammad Ahsan Nairn Title: CTO Tel: 844-285-9434 Email: [email protected] Company name: Welink Communications

WWelink Date:February 26th, 2021 To: Federal Communications Commission, Autho「ization& Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: Request of Confidentiality fo「FCCID: 2AYX4-PER200 To Whom it may concern: Pursuant to sections 0.457 and 0.459 of Commission's Rules(CFR 47), and Section 552(b)(4) of the Freedom of Information Act, WeLink hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors We are also hereby request Short-Term Confidentiality till date 08/26/2021 (max time 180 days from grant date) as outlined in Public Notice DA04-1705. This provision will give WeLink temporary confidentiality of commercially sensitive information prior to product release. The requested Permanent and Short-Term Confidential exhibits are listed as follows: PERMANENT AND SHORT-TERM CONFIDENTIAL LIST Exhibit Description 1 Block Diagram 2 Operational Description PERMANENT 3 Schematics 4 BOM 5 6 - External Photos 7 Internal Photos SHORT-TERM 8 Test-Setup Photos 9 Use「Manual The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. s巨夕 Name: Muhammad Ahsan Nairn Company name: Welink Communications Address: 1881 W Traverse Pkwy, Lehi UT, 84043 Tel: 844-285-9434 Email: [email protected]

Report No.: 2103RSU022-UE 1 of 1 EUT External Photograph (1) EUT Photo (2) EUT Photo

1. Label 2. Label location On the Shielding Case

Report No.: 2103RSU022-UE 1 of 2 EUT Internal Photograph (1) EUT Photo (2) EUT Photo Report No.: 2103RSU022-UE 2 of 2 (3) EUT Photo

MRT Technology (Suzhou) Co., Ltd Report No.: 2103RSU022-U1 Phone: +86-512-66308358 Report Version: V02 Web: www.mrt-cert.com Issue Date: 04-07-2021 1 of 35 FCC ID: 2AYX4-PER200 Applicant: WeLink Communications LLC Application Type: Certification Product: Peraso 60 GHz radio Module. Quetzal based Model No.: PER_200 Brand Name: WeLink Communications LLC FCC Classification: Part 15 Low Power Transceiver, Rx Verified (DXT) FCC Rule Part(s): FCC PART 15.255 Test Procedure(s): ANSI C63.10-2013 Test Date: March 13 ~ 24, 2021 Reviewed By: Vincent Yu Approved By: Robin Wu MEASUREMENT REPORT FCC PART 15.255 The test results relate only to the samples tested. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in ANSI C63.10-2013. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. Report No.: 2103RSU022-U1 2 of 35 Revision History Report No. Version Description Issue Date Note 2103RSU022-U1 Rev. 01 Initial Report 03-30-2021 Invalid 2103RSU022-U1 Rev. 02 Modification 04-07-2021 Valid Report No.: 2103RSU022-U1 3 of 35 CONTENTS Description Page 1. GENERAL INFORMATION ........................................................................................................ 5 1.1. Applicant .......................................................................................................................... 5 1.2. Manufacturer ................................................................................................................... 5 1.3. Testing Facility ................................................................................................................. 5 2. PRODUCT INFORMATION ........................................................................................................ 6 2.1. Equipment Description .................................................................................................... 6 2.2. Test Mode ....................................................................................................................... 6 2.3. Operation Frequency and Channel List ........................................................................... 6 2.4. Test Environment Condition ............................................................................................ 6 2.5. Description of Test Software ........................................................................................... 6 3. ANTENNA REQUIREMENTS .................................................................................................... 7 4. TEST EQUIPMENT CALIBRATION DATA ................................................................................ 8 5. MEASUREMENT UNCERTAINTY ............................................................................................. 9 6. TEST RESULT ......................................................................................................................... 10 6.1. Summary ....................................................................................................................... 10 6.2. 6dB Occupied Bandwidth .............................................................................................. 11 6.2.1. Test Limit ................................................................................................................... 11 6.2.2. Test Procedure used ................................................................................................. 11 6.2.3. Test Setting ................................................................................................................ 11 6.2.4. Test Setup ................................................................................................................. 11 6.2.5. Test Result ................................................................................................................. 12 6.3. EIRP Power ................................................................................................................... 13 6.3.1. Test Limit ................................................................................................................... 13 6.3.2. Test Procedure used ................................................................................................. 13 6.3.3. Test Setting ................................................................................................................ 13 6.3.4. Test Setup ................................................................................................................. 14 6.3.5. Test Result ................................................................................................................. 15 6.4. Conducted Output Power .............................................................................................. 17 6.4.1. Test Limit ................................................................................................................... 17 6.4.2. Test Procedure used ................................................................................................. 17 6.4.3. Test Procedure .......................................................................................................... 17 6.4.4. Test Setup ................................................................................................................. 17 6.4.5. Test Result ................................................................................................................. 18 Report No.: 2103RSU022-U1 4 of 35 6.5. Transmitter Spurious Emissions .................................................................................... 19 6.5.1. Test Limit ................................................................................................................... 19 6.5.2. Te…

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R eport No.: 2103RSU022-UT 1 of 5 T est Setup Photograph Des cription: Front View of Conducted Emission Test Setup Des cription: Back View of Conducted Emission Test Setup R eport No.: 2103RSU022-UT Des cription: Radiated Spurious Emission Test Setup for 30MHz ~ 1GHz Des cription: Radiated Spurious Emission Test Setup for 1GHz ~ 18GHz R eport No.: 2103RSU022-UT Des cription: Radiated Spurious Emission Test Setup for 18GHz ~ 40GHz Descri ption: Radiated Spurious Emission Test Setup for 40GHz ~ 50GHz R eport No.: 2103RSU022-UT Des cription: Radiated Spurious Emission Test Setup for 50GHz ~ 75GHz Des cription: Radiated Spurious Emission Test Setup for 75GHz ~ 110GHz R eport No.: 2103RSU022-UT Des cription: Radiated Spurious Emission Test Setup for 110GHz ~ 140GHz Des cription: Radiated Spurious Emission Test Setup for 140GHz ~ 200GHz