FCC ID: 2AOFDL-WFMUB6U U series 8800DU Wi-Fi 6 module

L-WFMUB6U-G5NI4 1Label Content Product NameU series 8800DU Wi-Fi6 module Module P\NL-WFMUB6U-G5NI4 FCC ID2AOFDL-WFMUB6U ManufacturerZhejiang Lierda Internet of Things Technology Co.,Ltd 2Label Size 13mm(L)X 4.2mm(W) 3Label Location Note: The label is attaches to the back of the module as shown above.

UNITED STATES DESIGNATED AGENT LETTER Date: 2023-12-11 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Applicant U.S. designated agent Company Name: Zhejiang Lierda Internet of Company Name: Picus Advisors US LLC Things Technology Co., Ltd. Contact Name: Qingqing Sun Contact Name: Ivan Wang Address: Room 1402, Building 1, Address: 839 FM1489 Rd., Brookshire, TE No. 1326, Wenyi West XAS, 77423, USA Road Cangqian street, Yuhang District, HangZhou, Zhejiang Prov. China City/Province/Zip: | HangZhou, Zhejiang Prov City/Province/Zip: | Brookshire, TEXAS, 77423 Telephone: / Telephone: (713) 614-8818 Email: sunqq@lierda.com Email: ivan.wang@nygtek.com FRN: / FRN: 0034336891 Applicable Equipment: FCC 1D: 2AOFDL-WFMUB6U ATTN: Director of Certification:

We, < Zhejiang Lierda Internet of Things Technology Co., Ltd. > and <Picus Advisors US LLC>

understand and acknowledge the applicants consent and the designated agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and e-mail of the designated agent listed above. We, < Zhejiang Lierda Intemet of Things Technology Co., Ltd. > and <Picus Advisors US LLC>

acknowledge the applicant's acceptance of its obligation 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. Applicant U.S. designated agent Zhejiang Lierda Internet of Things Technology Co., Ltd. Picus Advisors US LLC Name (Printed): Qingqing Sun Name (Printed): Ivan Wang Title: Manager Title: CEO Signature: J yen Woes Signature: . 2ZoF -l AS

(Zhejiang Lierda Internet of Things Technology Co., Ltd. ) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023-12-27 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AOFDL-WFMUB6U Zhejiang Lierda Internet of Things Technology Co., Ltd. certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Qingqing Sun Rev 1/26/2023

(Zhejiang Lierda Internet of Things Technology Co., Ltd.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023-12-27 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID:2AOFDL-WFMUB6U Zhejiang Lierda Internet of Things Technology 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, Qingqing Sun Rev 1/26/2023

Date: 15 January 2024 Zhejiang Lierda Internet of Things Technology Co., Ltd. To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern:

The Zhejiang Lierda Internet of Things Technology Co., Ltd., the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the Zhejiang Lierda Internet of Things Technology Co., Ltd. solely in matters relating to the application for an FCC equipment authorization for FCC ID: 2AOFDL-WFMUB6U including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the Zhejiang Lierda Internet of Things Technology Co., Ltd.. The Zhejiang Lierda Internet of Things Technology Co., Ltd. also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, _______ Qingqing Sun

Date: 15 January 2024 Zhejiang Lierda Internet of Things Technology Co., Ltd. To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: Zhejiang Lierda Internet of Things Technology Co., Ltd. FCC ID: 2AOFDL-WFMUB6U FCC Certification Confidentiality Request Gentlemen:

This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. Zhejiang Lierda Internet of Things Technology Co., Ltd. requests that the following documents regarding this submission for FCC ID: 2AOFDL-WFMUB6U be kept confidential:

Exhibit Type Block Diagram Schematics Operational Description Operational Description.pdf File Name Block Diagram.pdf Schematics.pdf And below exhibit kept short-term confidential (180 days):

External photos Test setup photos Internal photos User manual External photos.pdf test photo.pdf Internal photos.pdf User manual.pdf Those documents contain detailed system and equipment description and related information about the product which Zhejiang Lierda Internet of Things Technology Co., Ltd. considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, Zhejiang Lierda Internet of Things Technology Co., Ltd. considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Yours Sincerely, Qingqing Sun

Modular Approval Request FCC (KDB 996369 D01 & Part 15.212) Request for Modular Approval FCC ID: 2AOFDL-WFMUB6U Item Requirements Answer from applicant 1 2 3 4 5 6 7 8 Have its own RF shielding No,This modular has no RF shield. Have buffered modulation/data inputs (if such inputs are provided) Yes, The modular data inputs are buffered through log or microcontroller connections. All modulation and data inputs are buffered by circuitry on the transmitter chip. Yes, Power supply regulation is provided by circuitry on the Have its own power supply regulation CPU chip. Meet the antenna requirements of section 15.203 modular with a special joint antenna connector. And the Yes, The EUT meet the FCC antenna requirements, the antenna Is descripted is module user manual. Yes, The TUE is can transmitting Stand-alone. Demonstrate compliance in a stand-alone configuration 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. The module must comply with all specific rules applicable to the transmitter. The grantee must provide comprehensive instructions to explain compliance requirements. comply with The module must exposure requirements. Spread Spectrum transmitters must comply with RF exposure limits in 15.247. See FCC Rules. RF Yes, The module is labeled with its permanently affixed FCC ID label. The label position is clearly indicated. Please refer to label & label location information. Yes, The EUT is full compliant with FCC rules, please refer the details in user manual. Yes, This module is complies with FCC CFR 47 part 2.1091 and FCC KDB 447498 D01 General RF Exposure Guidance limit , Please refer RF exposure report. Name and surname of applicant (or authorized representative): _Qingqing Sun__ Date: 2024/03/04_ Signature:

Zhejiang Lierda Internet of Things technology Co.,Ltd Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Requirements of KDB 996369 D03 Summary of requirements and Checklist.Refer to the KDB for description of the complete requirements;

KDB Ref Sect 2.2 2.3 2.4 2.6 2.5 2.7 2.8 2.9 2.1 List of applicable FCC rules Summarize the specific operational use conditions Limited module procedures P9 2.5 Trace antenna designs RF exposure considerations Trace antenna designs Antennas Label and compliance information Information on test modes and additional testing requirements Additional testing, Part 15 Subpart B disclaimer P31 P31 P31 P32 P32 P33 P33 P33 P33 User Manual Page Number reference Test plan for Host changes Rule Part Item Scope 15.247(b) 15.209;

15.247(d) 2.1093 List of applicable FCC rules Radiated Spurious Emission Band Edge(Restricted-band band-edge) Radio frequency radiation exposure evaluation: portable devices New host device New host device New host device Applicable for portable host device Name: Qingqing Sun Date: Jan. 12, 2023 Signature of applicant:

Check list PAG requirements for LMA a) The MODLIM PAG is for a limited module under 15.212(b) when shielding, buffered modulation/data inputs, and power supply regulation cannot comply. Reply: Yes, this module has no shielding. b) Shielding of radio elements is required under 15.212(a)(1)(i), and if the module cannot comply, the module can qualify as a limited module, and a PAG MODLIM is required. The integration instructions must specific that a C2/3PC is required. Reply: Yes, this module has no shielding, when integrate a new host must apply for C2/C3PC in user manual page 27. c) The module must have buffered modulation/data inputs 15.212 (a)(1)(ii), and if the module cannot comply, the module can qualify as a limited module, and a PAG MODLIM is required. Reply: N/A, this module has the buffered modulation/data inputs. d) If voltage regulation is required under 15.212(a)(1)(iii), and if the module cannot comply, the module can qualify as a limited module, and a PAG MODLIM is required. Reply: N/A, this module has the power supply which is provided by circuitry on the CPU chip. e) Antenna and transmission system requirements of 15.212(a)(1)(iv) for 15.203, 15.204(b) and 15.204(c). Professionl installation procedures can be extended to host professional installers. For modules that are used in host professional installation can qualify as an LMA when the details are defined in the filing and integration instructions 996369 D03 OEM Manual v01 as a PAG item MODLIM. Reply: N/A, This module meet the FCC antenna and transmission system requirements. f) Tested in a stand-alone configuration under 15.212(a)(1)(v). If the module cannot comply with a stand-alone configuration, the module can qualify for limited module certification by testing in the Host under LMA under PAG item MODLIM. Reply: N/A. This module can transmitting Stand-alone. g) The modular transmitter must be equipped with either a permanently affixed label 15.212(a)(1)(vi) or if the small size meets 2.925(f) and capable of electronically displaying its FCC identification. All modules must comply with this condition and cannot be used as a condition for obtaining LMA. Reply: N/A. The module is labeled with its permanently affixed FCC ID label. The label position is clearly indicated. Please refer to label & label location information. h) The modular transmitter must comply with all the specific rules or operating requirements 15.212(a)(1)(vii), and this requirement cannot be used as a condition for obtaining limited module certification. Reply: The module is full compliant with FCC rules i) 15.212(a)(1)(viii) subject to the radio frequency radiation exposure requirements. All modules must comply with this condition and cannot be used as a condition for obtaining LMA. Reply: This module is complies with FCC CFR 47 part 2.1091 and FCC KDB 447498 D04 v01 General RF Exposure Guidance limit , Please refer RF exposure report.