FCC ID: X3R-I50 DC/DC converter for use in Photovoltaic applications

LABEL, FCC I50 Optimizers

(Ampt p/n: 43000111-1 A) 2.0 5 7

. 0 Model: I50 FCC ID: X3R-I50 IC: 8399A-I50 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may cause undesired operation. Manufactured by Ampt, LLC DIE LINE DOES NOT PRINT

ampt energy realized April 17, 2023 Attention: Application Examiner RE Request for Confidentiality Applicant: Ampt, LLC FCC ID: X3R-I50 To Whom It May Concern Permanent Confidentiality Request is hereby submitted by Ampt, LLC to withhold permanently from public

. review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept permanently confidential:

Schematics e Detailed Block Diagrams Detailed Operational/Functional Description Internal photos (PCBA is ensased in potting compound) Short-term Confidentiality Request is hereby submitted by Ampt, LLC to withhold from public review for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing, certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept confidential for a period of 180 days from the date of Authorization:

e Test setup photos e External photos User manual Long term Confidentiality Request is hereby submitted by Ampt, LLC to withhold internal photos from public review as the circuit board and internal components are not accessible by users and is enclosed in potting compound. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. Ampt LLC, 4850 Innovation Drive, Fort Collins, CO 80525 p: 970.372.6950 f: 970.225.0483 www.ampt.com h eed further formatio plea ntact the unders ed. rr EO Dante ve Rationale for request for confidentiality:

Ampt, LLC has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge technology developed by us. Ifyou ave questions orn ign Sincerely, Robin Richardson Director of Hardware Engineering Ampt, LLC Ampt LLC, 4850 Innovation Drive, Fort Collins, CO 80525 p: 970.372.6950 f: 970.225.0483 www.ampt.com

ae https://www.fcc.gov/supplychain/coveredli energy realized Attention: Application Examiner Re: Covered List, located at CFR parts 2.903 and 2.911(d)(5)(ii) of the FCC rules Applicant: Ampt, LLC FCC ID: X3R-I50 To whom it may concern, Ampt, LLC (Applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to 47 CFR part 2.903 of the FCC rules and does not originate directly or indirectly from any company named on the covered list located in the link above or any subsidiary or affiliate thereof. Applicant further certifies that, as of the date of the filing of the application, the Applicant is not identified on the Covered List as an entity producing covered equipment and is not a subsidiary or affiliate of any such entity pursuant to 47 CFR part 1.50002 and required by 47 CFR part 2.911(d)(5) (ii) of the FCC rules.

] HEREBY CERTIFY THAT I am authorized to make the representations above on behalf of the Applicant and agree to immediately notify Intertek if there is any change in the status identified above. Robin Richardson Director of Hardware Engineering Ampt, LLC April 17, 2023 Ampt LLC, 4850 Innovation Drive, Fort Collins, CO 80525 p: 970.372.6950 f: 970.225.0483 www.ampt.com

ampt energy realized April 17, 2023 Federal Communications Commission 445 12t Street SW Washington, DC 20554 Subject: Limited Agency Agreement Ampt, LLC FCC ID: X3R-150 To Whom It May Concern:

We, Ampt, LLC, hereby authorize Intertek Testing Services to act as our Agent for the purpose of preparing application for FCC ID number X3R-150 under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is April 17, 2023. The Limited Agency Agreement expires on December 31, 2023 unless sooner terminated or extended by written notice to Intertek Testing Services and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Robin Richardson Director of Hardware Engineering Ampt LLC, 4850 Innovation Drive, Fort Collins, CO 80525 p: 970.372.6950 f: 970.225.0483 www.ampt.com

ampt energy realized Attention: Application Examiner Re: Certification designating a U.S. agent for service of process pursuant to 47 CFR part 2.911(d)(7) of the FCC rules To whom it may concern, This letter is to certify that Ampt, LLC (Applicant) accepts responsibilities to act as its own agent pursuant to 47 CFR part 2.911(d)(7) of the FCC rules for service of process. I consent to the obligation to accept service of process on behalf of the Applicant for all certification applications to the FCC. I HEREBY CERTIFY THAT I am authorized to make the representations above on behalf of the Applicant. I further acknowledge the requirement to maintain an agent extends for no less than one year after the termination of all marketing and importation or the conclusion of and commission-related proceeding involving the equipment and agree to immediately notify the FCC and Intertek if there is any change in the status identified above. Applicant Company Name : Ampt, LLC Contact Name : Robin Richardson Address : 4850 Innovation Drive, Fort Collins, Colorado 80525 USA Telephone No : 970.372.6960 Email : robin.richardson@ampt.com Applicant FRN 833475 pate: \11| 2023 Ampt LLC, 4850 Innovation Drive, Fort Collins, CO 80525 p: 970.372.6950 f: 970.225.0483 www.ampt.com