FCC ID: 2AC7Z-ESPS3SK 2.4GHz Wi-Fi & BT IoT Module

ESP32-S3-SK R-R-es5-ESP32S3SK R 020-240002 CCAF23Y10250T9 FCC ID:2AC7Z-ESPS3SK IC: 21098-ESPS3SK CMIIT ID :

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ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Date: January 3, 2024 Subject: Certifications concerning covered equipment pursuant to Part 2.911(d)(5)(i) and (ii) To whom it may concern, ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD certifies that the equipment FCC ID: 2AC7Z-ESPS3SK for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing covered equipment. Sincerely, ________________________ Name: Mia Zhou E-mail: zhoumiaomiao@espressif.com

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(Insert company letter head) Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Certification designating a U.S. agent for service of process pursuant to Part 2.911(d)(7) To whom it may concern, ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD, 2AC7Z(the applicant) certifies that, as of the date of the filing of application, [Grid Connect, Inc.] (the agent) is designated as the U.S. agent for the purpose of accepting service of process on behalf of the applicant. The physical U.S. address and email for the designated agent are:

Physical U.S. address: [1630 W. Diehl Road, Naperville, IL 60563]

Email: [EspressifUSAgent@gridconnect.com]

The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The agent accepts the designation by (the applicant) as the U.S. agent to accept service of process includes, but is not limited to, delivery of any correspondence, notices, orders, decisions, and requirements of administrative, legal, or judicial process related to Commission proceedings. Signed by the Applicant FRN: 0023938848 Signed by the Agent (if different from the Applicant) FRN: 0024737660 Name: Mia Zhou Title: Certification Manager Name: M.B. Justice Title: President Email: zhoumiaomiao@espressif.com Email: EspressifUSAgent@gridconnect.com Date:July 20, 2023 Date: July 20, 2023

ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Federal Communications Commission Office of Engineering and Technology Laboratory Division 7435 Oakland Mills Rd Columbia MD 21046-1609 Subject: Request for Confidentiality FCC ID: 2AC7Z-ESPS3SK Date: January 3, 2024 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commissions rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure indefinitely. Schematic Diagram Block Diagram Part List Operational Description Tune-up Procedure Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In additional to above mentioned documents, pursuant to Public Notice DA 04-1705 of the Commission s policy, in order to comply with the marketing regulations in 47 CFT 2.803 and the importation rules in 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices. We are requesting the commission to grant short-term confidentiality request on the following attachment(s) for 180 days after the grant as outlined in Public Notice DA 04-1705. External Photos Internal Photos Test Setup Photos User Manual It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Best Regards, _____ _________________ Contact Person: Mia Zhou E-mail: zhoumiaomiao@espressif.com

ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Power of Attorney Date: January 3, 2024 To whom it may concern, Please be notified that I, Mia Zhou, have designated Jim Tsai in Sporton International Inc. as the person being responsible for this project and to sign the form 731 and other documentation. Any and all acts carried out by Jim Tsai in Sporton International Inc., on the matters of relating to all processes required in the FCC approval and any communication needed with the national authority, shall have the same legal authority as acts on our own behalf. We further certifies that neither the applicant nor any party to this application, as defined in 47 CFR Ch. 1.2002 (b), is subject to a denial to Federal benefits, that include FCC benefits, pursuant to section 5301 of the Anti-Drug Abuse Act of 1998, 21 U.S.C. 835(a). This authorization is limited to the product of as following:

FCC ID: 2AC7Z-ESPS3SK If you have any acknowledgement and response, please send it to Sporton International Inc. directly. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely yours, Contact Person: Mia Zhou E-mail: zhoumiaomiao@espressif.com

Applicant/Grantee FCC ID:

ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD 2AC7Z-ESPS3SK Section 15.212 Modular Transmitters Request for Modular Approval Request for Limited Modular Approval Requirements EUT Conditions Comply (Y/N) Single Modular Approval Requirements The radio portion of this module is shielded, please see exhibition external photos. The module has buffer modulation/data inputs. The module has its own power supply regulation. Please see the schem.pdf The requirements of antenna connector and spurious emission have been fulfilled. Please refer to the Test Report exhibition. Please refer to the Setup Photo exhibition for the stand-alone test configuration. Y Y Y Y Y 1 2 3 4 5 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. 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 modular transmitter must have its own power supply regulation. The modular transmitter must comply with the antenna and transmission system requirements of Sections 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 Section 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. 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 Section 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 Section 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 6 7 equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available

(see Section 15.31(i)). 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 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. 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. The Module will be labeled with its own FCC ID, and the instruction on the labeling rule of the end product has been stated in the User Manual of this module. Please refer to the Label and User Manual exhibition. Y The required FCC rule has been fulfilled and all the instructions for maintaining compliance have been clearly stated in the User Manual. Y 8 The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. Please refer exhibition RF Exposure for the compliance of MPE RF exposure rule. Y _________________________________ Contact Person: Mia Zhou E-mail: zhoumiaomiao@espressif.com