FCC ID: 2ADHKWBZ451H Wireless MCU module with BLE 5.2 compliant and Zigbee 3.0 Radio

WBZ451HPE FCC ID: 2apHkwez451H IC: 20266-wBz451H YYWWNNN WBZ451HUE FCC ID: 2apHKwsz451H IC: 20266-wBz451H YYWWNNN

Authority to Act as Agent Date: 2023-06-29 TUV Rheinland of North America, Inc. 1279 Quarry Lane., Suite. A Pleasanton, CA 94566 To Whom It May Concern:

I appoint TUV Rheinland of North American Inc., 1279 Quarry Lane, Suite A, Pleasanton, CA 94566, USA to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the FCC or Industry Canadas regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with ____Microchip Technology Inc._/ 2355 West Chandler Blvd. Chandler, Arizona, USA 85224-6199____. For TCB applications, We certify that we are not subject to 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. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Date:

29 June 2023 Agreement is valid for 12 months from the above date. By:

(Signature) HRUSHIKESH VASUKI

(Print name) Appointed Vice President WSG

(Title)

+1 480-437-0762

(Telephone) _ __ On behalf of:

Microchip Technology Inc._____

(Company Name) Microchip Technology Incorporated 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Main Office 480-792-7200 Fax 480-899-9210

Applicant as U.S. Agent Letter of Attestation Date: 01-18-2024 To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Attestation Statement Part 2.911(d)(7) filing FCC ID: 2ADHKWBZ451H Microchip Technology Inc. (the applicant) as required by section 2.911(d)(7), will also serve as the agent for service of process for the above referenced FCC ID. The applicant acknowledges that they will maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges their responsibility to inform the FCC whenever the agent information changes. Designated U.S. Agent from Applicant Company Company Name: Microchip Technology Inc. Contact Person: HRUSHIKESH VASUKI Address: 2355 West Chandler Blvd. Chandler, Arizona, USA 85224-6199 Tel.: 1 480-437-0762 Email: rishi.vasuki@microchip.com FCC FRN: 0001596279 Sincerely yours, Signature Printed Name: HRUSHIKESH VASUKI Title: Vice President, Business Unit General Manager, Wireless Solutions Group Email: rishi.vasuki@microchip.com

Date: 2024-01-18 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Confidentiality Request for FCC ID: 2ADHKWBZ451H Pursuant to FCC 47 CRF 0.457(d), the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent n/a Permanent Permanent Permanent Permanent Permanent Permanent Permanent Exhibit Block Diagrams External Photo Internal Photos ***

Operation Description/Theory of Operation Schematics Test Setup***

Tune-Up Procedure Users Manual***

Part List Microchip Technology Inc. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public.

(*** Exceptional case for Permanent Confidentiality for these Exhibits by PAG only) Short-Term Confidentiality:

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. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. Sincerely, By:

Tel: 480-437-0762 Email: rishi.vasuki@microchip.com _______________________ HRUSHIKESH VASUKI / Vice President, Business Unit General Manager, Wireless Solutions Group

(Print name/Title)

(Signature) Page 1 of 1

22-Jan-24 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Certification and Engineering Bureau ISED Canada 3701 Carling Avenue (Building 94) Ottawa, Ontario K2H 8S2 FCC ID: 2ADHKWBZ451H IC: 20266-WBZ451H Models: WBZ451HPE, WBZ451HUE HVIN: WBZ451HPE, WBZ451HUE Declaration on Similarity We herewith confirm that for the models listed above the RF Transmitter Module is Electrically Identical. All models are identical to each other in the circuit design, PCB layout and use of component sources except for the change highlighted in table below. The output power configuration is fixed by software settings; No change in the RF section of the SoC. The model differences are as below description. Models Describe the differences between the main model and the series model Main WBZ451HPE PCB Antenna without Trust and Go Chip Series WBZ451HUE U.FL Antenna without Trust and Go Chip ___________________ HRUSHIKESH VASUKI / Vice President, Business Unit General Manager, Wireless Solutions Group

(Signature)

(Printed/Title)

Applicant/Grantee Microchip Technology Inc. FCC ID:

2ADHKWBZ451H Section 15.212 Modular Transmitters /

X Request for Modular Approval Requirements Request for Limited Modular Approval Device Conditions Comply (Y/N) Single Modular Approval Requirements The radio elements must have the radio frequency circuitry must be shielded. Physical/discrete and tuning capacitors may be located external to the shield, but must be on the module assembly. The module shall have buffered modulation/data input(s) (if such inputs are provided) to ensure that the module will comply with the requirements set out in the applicable RSS standard under conditions of excessive data rates or over-modulation. The module shall have its own power supply regulation on the module. This is to ensure that the module will comply with the requirements set out in the applicable standard regardless of the design of the power supplying circuitry in the host device which houses the module. Requirements set out in the applicable standard regardless of the design of the power supplying circuitry in the host device which houses the module. The module shall comply with the provisions for external power amplifiers and antennas detailed in this standard. The Equipment certification submission shall contain a detailed description of the configuration of all antennas that will be used with the module. The module shall be tested for compliance with the applicable standard in a stand-

alone configuration, i.e. the module must not be inside another device during testing. The module has its own RF shielding. Shield Can is employed on the board structure, please see exhibition External Photo, the emission measurement was conducted without further shielding added. All modulation and data input(s) are buffered. The EUT has buffered data inputs, it is integrated on the RF chip Output power is controlled by the RF Chip and de-coupled from supply voltage variations. Frequencies are determined by Crystal The antenna is part of the module The modular transmitter was tested in a stand-alone configuration via a UART Interface. The module shall comply with the Category I equipment labelling requirements. In the exhibition OEM manual, there are Instructions given to the OEM on how to label the end product. 1 2 3 4 5 6 Y Y Y Y Y Y The modular transmitter complies with all specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer will provide adequate instructions along with the module to explain any such requirements. A copy of these instructions is included in this application for equipment authorization:

Address compliance with the Commission's RF exposure limits in Sections 1.1310 and 2.1093. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF exposure compliance in accordance with Section 15.247(b)(4). 7 8a Instructions in User Manual Please refer the Maximum Permissible Exposure Information. Y Y A limited modular approval may be granted for single or split modular transmitters that do not comply with all of the above requirements, e.g., shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation, if the manufacturer can demonstrate by alternative means in the application for equipment authorization that the modular transmitter meets all the applicable Part 15 requirements under the operating conditions in which the transmitter will be used. Limited modular approval also may be granted in those instances where compliance with RF exposure rules is demonstrated only for particular product configurations. The applicant for certification must state how control of the end product into which the module will be installed will be maintained such that full compliance of the end product is always ensured. Signature Name/Title: HRUSHIKESH VASUKI / Vice President, Business Unit General Manager, Wireless Solutions Group Company Name: Microchip Technology Inc. Date: 18.01.2024

Attestation Statements Not Covered Entity Applicant To: Federal Communications Commission Date: 01-18-2024 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(ii) filing FCC ID: 2ADHKWBZ451H

[Microchip Technology Inc.] (the applicant) 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 yours, Applicant Signature Printed Name: HRUSHIKESH VASUKI Title: Vice President, Business Unit General Manager, Wireless Solutions Group Address: 2355 West Chandler Blvd. Chandler, Arizona, USA 85224-6199 Tel.: 1 480-437-0762 Email: rishi.vasuki@microchip.com

Attestation Statements Not Covered Equipment To: Federal Communications Commission Date: 01-18-2024 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) filing FCC ID: 2ADHKWBZ451H

[Microchip Technology Inc.] (the applicant) 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 yours, Applicant Signature Printed Name: HRUSHIKESH VASUKI Title: Vice President, Business Unit General Manager, Wireless Solutions Group Address: 2355 West Chandler Blvd. Chandler, Arizona, USA 85224-6199 Tel.: 1 480-437-0762 Email: rishi.vasuki@microchip.com