OUECEL500Celestial

WHAT’S IN THE BOX AND HOW DOES IT WORK? Your 500WS Celestial Flash Unit should arrive with a shipping cap, silicon diffusion dome, and a pre-installed 10mm flashtube. In your box, you should also find a battery and charger for your unit. The Celestial Flash Unit features a simple and intuitive control scheme: Press and hold to power on and power off your unit. When powered on, short press for test flash. Short press to enter and exit menu cycling. Use the wheel to cycle back and forth through options and center button to make your selections. Once a selection is made, you are back to cycling through your options using the wheel. Your screen is broken down into a few simple sections: - Flash: Change your flash power or modes - Model: Change your model power or modes - Ready: Select indicators for your flashes recycle - Sync: Choose a function for syncing your light(s) - Freq: Frequency selection - Chan: Channel selection - Battery indicator SCAN TO LEARN MORE! Warning: Changes or modifications to this unit not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment. FCC Radiation Exposure Statement The device has been evaluated to meet general RF exposure requirement. The device can be used in fixed/mobile (min 20cm) exposure condition without restriction. 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. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help.

Paul C. Buff, Inc. Covered Equipment Certification Attestation Letter 3/13/2023 ATTN.: Reviewing Engineer FCC ID: OUECEL500 Paul C. Buff, 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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Paul C. Buff, 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 an entity producing “covered” equipment. Signed: Printed name: Brian Lennon Title: Technical Director Company Name: Paul C. Buff, Inc. Date: 3/13/2023

Paul C. Buff, Inc. * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 3/13/2023 ATTN.: Reviewing Engineer FCC ID: OUECEL500 Per section 2.911(d)(7) of the FCC rules, Paul C. Buff, Inc. (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: Paul C. Buff, Inc. Physical U.S. Company Address: 2725 Bransford Ave. , Nashville,Tennessee United States 37204 Agent contact name/Title : Brian Lennon/Technical Director Agent Email Address: [email protected] Tel No.: 615-383-3982 FRN No.: 0015806235 The above contact person accepts the obligation for service of process. The applicant accepts to 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 proceeding involving the equipment. Applicant Signed: Agent Signed (if different to Applicant): Signed: Signed: Printed name: Brian Lennon Printed name: Brian Lennon Title: Technical Director Title: Technical Director Company Name: Paul C. Buff, Inc. Company Name: Paul C. Buff, Inc. Date: 3/13/2023 Date:3/13/2023

Paul C. Buff, Inc. Agent Authorization Company: Paul C. Buff, Inc. Address: 2725 Bransford Ave. , Nashville,Tennessee United States 37204 Product Name: Celestial Model Number(s): Celestial Product Description: Celestial FCC ID: OUECEL500 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2023.03.13 Name: Jiankuai Li Title: PM Company: Shenzhen STS Test Services Co., Ltd.

2023.03.13 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize SHENZHEN STS TEST SERVICES CO.,LTD./ A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District,Bao’an District, Shenzhen, Guang Dong, China/Jiankuai Li(Name of Agent company name and address, Name of Agent) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. This appointment is valid until further Dec. 31, 2024. Name: Jiankuai Li Title: PM E- mail:[email protected] Sincerely, Signature: Name: Brian Lennon Title: Technical Director E- mail: [email protected] Company: Paul C. Buff, Inc.

Paul C. Buff, Inc. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023.03.13 Subject; Request for Confidentiality FCC ID: OUECEL500 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Signature: Date: 2023.03.13 Name: Jiankuai Li Title: PM Company: Shenzhen STS Test Services Co., Ltd.

Page 1 of 5 Report No.: STS2302111 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: Celestial Photo 1 Photo 2 Page 2 of 5 Report No.: STS2302111 Photo 3 Photo 4 Page 3 of 5 Report No.: STS2302111 Photo 5 Photo 6 Page 4 of 5 Report No.: STS2302111 Photo 7 Photo 8 Page 5 of 5 Report No.: STS2302111 Photo 9

FCC Label Celestial Model name: Celestial FCC ID: OUECEL500 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.

Page 1 of 8 Report No.: STS2302111 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: Celestial Photo 1 Photo 2 Page 2 of 8 Report No.: STS2302111 Photo 3 Photo 4 Rx Antenna Page 3 of 8 Report No.: STS2302111 Photo 5 Photo 6 Page 4 of 8 Report No.: STS2302111 Photo 7 Photo 8 Page 5 of 8 Report No.: STS2302111 Photo 9 Photo 10 Page 6 of 8 Report No.: STS2302111 Photo 11 Photo 12 Page 7 of 8 Report No.: STS2302111 Photo 13 Photo 14 Page 8 of 8 Report No.: STS2302111 Photo 15 Photo 16

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, All Test Data Presented in this report is only applicable to presented Test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] FCC Part 15B TEST REPORT Report No.: STS2302111E01 Issued for Paul C. Buff, Inc. 2725 Bransford Ave. , Nashville,Tennessee United States 37204 Product Name: Celestial Brand: Paul C Buff Model Number: Celestial Series Model(s): N/A FCC ID OUECEL500 Test Standard: FCC 47 CFR Part 15: Subpart B S T L A B S Page 2 of 21 Report No.: STS2302111E01 TEST RESULT CERTIFICATION Applicant’s Name ................. : Paul C. Buff, Inc. Address .................................. : 2725 Bransford Ave. , Nashville,Tennessee United States 37204 Manufacture's Name ............ : GRE Alpha Electronics Ltd. Address .................................. : Unit 501, 5/F, No. 16 Science Park West Avenue, Phase 3, Hong Kong Science Park, Shatin, Hong Kong Product Description ............. : Product Name ......................... : Celestial Brand .................................... : Paul C Buff Model Number ........................ : .. : Celestial Series Model(s) ...................... : N/A Standards .............................. : FCC 47 CFR Part 15: Subpart B Test Procedure.................... : ANSI C63.4-2014 This device described above has been tested by STS, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ...........................................: Date of Receipt of Test Item .................... : 17 Feb. 2023 Date of Performance of Tests ................: 17 Feb. 2023 ~ 06 Apr. 2023 Date of Issue .........................................: 06 Apr. 2023 Test Result .............................................: Pass Testing Engineer : (star.deng) Technical Manager : (Bulun) Authorized Signatory : (Bovey Yang) Page 3 of 21 Report No.: STS2302111E01 Table of Contents 1. SUMMARY OF THE TEST RESULTS 5 1.1 TEST FACTORY 5 1.2 MEASUREMENT UNCERTAINTY 5 2. GENERAL INFORMATION 6 2.1 GENERAL DESCRIPTION OF THE EUT 6 2.2 DESCRIPTION OF THE TEST MODES 7 2.3 DESCRIPTION OF THE TEST SETUP 8 2.4 EQUIPMENTS LIST FOR ALL TEST ITEMS 9 3. EMC EMISSION TEST 10 3.1 CONDUCTED EMISSION MEASUREMENT 10 3.2 RADIATED EMISSION MEASUREMENT 13 APPENDIX 1 - TEST SETUP 21 Page 4 of 21 Report No.: STS2302111E01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 06 Apr. 2023 STS2302111E01 ALL Initial Issue Page 5 of 21 Report No.: STS2302111E01 1. SUMMARY OF THE TEST RESULTS Test procedures according to the technical standards: EMISSION Standard Item Result Remarks FCC 47 CFR Part 15: Subpart B Conducted Emission N/A Meet Class B limit Radiated Emission PASS Meet Class B limit NOTE: (1) N/A=Not Applicable. 1.1 TEST FACTORY Company Name: SHENZHEN STS TEST SERVICES CO.,LTD. Address: A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China Telephone: +86-755 3688 6288 Fax: +86-755 3688 6277 Registration No.: FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 Conducted Emission (9KHz-150KHz) ±2.14dB 2 Conducted Emission (150KHz-30MHz) ±2.54dB 3 All emissions,radiated(<1G) 30MHz-1000MHz ±3.94dB 4 All emissions,radiated(>1G) 1GHz-6GHz ±4.59dB 5 All emissions,radiated(>1G) 6GHz-18GHz ±5.22dB Page 6 of 21 Report No.: STS2302111E01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name Celestial Brand Paul C Buff Model Number Celestial Series Model(s) N/A Model Difference N/A Product Description The EUT is a Celestial. ITE equipment having a primary function of either (or a combination of) entry, storage, display, retrieval, transmission, processing, switching, or control of data and/or telecommunication messages and which may be equipped with one or more ports typically for information transfer. Frequency Bands 2.4G 2427-2457MHz Modulation Mode 2.4G GFSK Adapter Input: 100-240VAC 50/60Hz Output: 20.5V, 2.5A Battery Rated Voltage: 18V Charge Limit Voltage: 21V Capacity: 45Wh Hardware Version Number 1.0 Software Version Number 001.001.002 Note: For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. Page 7 of 21 Report No.: STS2302111E01 2.2 DESCRIPTION OF THE TEST MODES To investigate the maximum EMI emission characteristics generates from EUT, the test system was pre-scanning tested base on the consideration of following EUT operation mode or test configuration mode which possibly have effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively. Pretest Mode Description Mode 1 Lighting mode+SRD Mode 2 Flash Lighting mode+ SRD For Radiated Test Final Test Mode Description Mode 1 Lighting mode+SRD Note: 1. For radiated emission test, test mode 1 was the worst case and only this mode was presented in this report. 2. We have be tested for all avaiable U.S. voltage and frequencies (For 120V, 50/60Hz) for which the device is capable of operation. Page 8 of 21 Report No.: STS2302111E01 2.3…

Text truncated - open the document above for the full version.

Page 1 of 1 FCC ID: OUECEL500 JAB Setup photo Model Number: Celestial JAB radiation L JAB radiation H