OUEPCBHUBHUB

QUICK START GUIDE WIRELESS REMOTE WHAT’S INCLUDED: (1) HUB Wireless Remote (1) USB-A to USB-C Charging Cable (1) Rechargeable Internal Lithium-ion Battery 2-Year Factory Warranty [email protected] | 1.800.443.5542 12” 4” INDICATORS - DO NOT PRINT CROP MARKS FINAL SIZE FOLD EXTERIOR FCC ID: OUEPCBHUB FCC COMPLIANCE STATEMENT: 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. 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 portable exposure condition without restriction. CHARGING THE HUB To charge the HUB plug the USB-C side of the included charging cable directly into the HUB. Then plug the USB-A side into a wall outlet connector. Slide the bottom of the HUB onto your camera’s hot shoe. Turn the locking wheel clockwise to lock the HUB on to your camera. ATTACHING THE HUB TO YOUR CAMERA The HUB remote will function as a standard trigger, similar to our CyberSync Trigger Transmitter, and provides all of the necessary communication between any camera brand and a Paul C. Buff, Inc. flash unit. To utilize the TTL and HSS capabilities of a Paul C. Buff, Inc. flash unit that is equipped with those features (i.e. the LINK), a camera specific version of the HUB will be required. Press and hold the POWER button, located on the right side of the HUB, for two seconds. POWERING THE HUB ON / OFF The FREQUENCY ranges from 1 - 16. To set the frequency turn the ROTARY WHEEL until FREQUENCY appears on the display. Press in on the ROTARY WHEEL to enter the FREQUENCY section. Turn the ROTARY WHEEL until your desired frequency appears. Press in on the ROTARY WHEEL to confirm your selection. SETTING THE FREQUENCY Press in on the rotary wheel, located on the left side of the HUB. This will send a test fire to any flash units that are on the same frequency. SENDING A TEST FIRE CHARGING PORT SYNC JACK ROTARY WHEEL TOP HOT SHOE 1 POWER BUTTON REAR DISPLAY LOCKING BOTTOM HOT SHOE (CAMERA BRAND SPECIFIC) 2 3 4 5 6 7 1 2 3 4 5 6 7 By default, BLUETOOTH is ON when the HUB is first activated. To turn BLUETOOTH ON or OFF, turn the ROTARY WHEEL until BLUETOOTH appears on the display. Press in on the ROTARY WHEEL to enter the BLUETOOTH section. Turn the ROTARY WHEEL to toggle between ON and OFF. Press in on the ROTARY WHEEL to confirm your selection. BLUETOOTH To adjust the display brightness turn the ROTARY WHEEL until BRIGHTNESS appears on the display. Press in on the ROTARY WHEEL to enter the BRIGHTNESS section. Turn the ROTARY WHEEL until your desired brightness appears. ADJUSTING THE DISPLAY BRIGHTNESS To set the HUB into TTL mode, turn the ROTARY WHEEL until TTL appears on the display. Press in on the ROTARY WHEEL to enter the TTL section. Turn the ROTARY WHEEL to toggle between TTL and MAN (for manual). Press in on the ROTARY WHEEL to confirm your selection. TTL MODE The HUB will enter HSS mode automatically when your camera is set above it’s max sync speed.The HUB will also superseed any settings found on the LINK. For example, if the LINK is set to COLOR MODE but you are now shooting above your camera’s max sync speed, the HUB will then adjust the LINK and place it into HSS MODE. HSS MODE FREQUENCY TTL/MAN and HSS BATTERY INDICATOR BLUETOOTH 8 9 10 11 8 10 11 9 12” 4” INDICATORS - DO NOT PRINT CROP MARKS FINAL SIZE FOLD INTERIOR ABOUT To access the serial number, current firmware version, and FCC ID within the HUB interface, first turn on the HUB and use the rotary dial to scroll to the ‘ABOUT’ section. Then, once ‘ABOUT’ appears on the display, press in on the rotary dial to enter the section. Finally, scroll using the rotary dial to view each item.

Paul C. Buff, Inc. 2725 Bransford Ave., Nashville, TN 37204, USA Declaration letter Dear Sir, We, _Paul C. Buff, Inc._declare product: _ HUB _with the model numbers HUB-N, HUB-X (X represents the N, C, S, F, etc.)_, there is no electrical change has been made to the equipment that alters the compliance characteristics. These models are the same except for model number and and the ports to connect the product to the camera. Please kindly handle on the project. FCC ID: OUEPCBHUB Thank you! Sincerely, Signature Brian Lennon Technical Director Paul C. Buff, Inc. The ports to connect the camera. The number and placement of pins will vary according to the camera port.

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Paul C. Buff, Inc. Address: 2725 Bransford Ave., Nashville, TN 37204, USA Product Name: HUB Model Number: HUB-N, HUB-X FCC Identifier: OUEPCBHUB We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Brian Lennon Date: 02/23/2021 Title: Technical Director Signature of applicant:

C5266091_X10_Ed.1 1/1 Paul C. Buff, Inc. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 02/23/2020 Subject: Request for Confidentiality FCC ID: OUEPCBHUB To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality ID Label/Location No No Attestation Statement No No External Photos No Block Diagram Schematics Test Report No No Test Setup Photos No User’s Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) No No SDR Software / Security Info No 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. 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. Sincerely, Signature: Name: Brian Lennon Title: Technical Director

FCC ID: OUEPCBHUB Page 3 of 11 External photos FCC ID: OUEPCBHUB Page 4 of 11 FCC ID: OUEPCBHUB Page 5 of 11

The product label is e-label Inquiry steps: First turn on the HUB and use the rotary dial to scroll to the ‘ABOUT’ section. Then, once ‘ABOUT’ appears on the display, press in on the rotary dial to enter the section. Finally, scroll using the rotary dial to view FCC ID: OUEPCBHUB.

FCC ID: OUEPCBHUB Page 6 of 11 Internal photos FCC ID: OUEPCBHUB Page 7 of 11 FCC ID: OUEPCBHUB Page 8 of 11 FCC ID: OUEPCBHUB Page 9 of 11 FCC ID: OUEPCBHUB Page 10 of 11 FCC ID: OUEPCBHUB Page 11 of 11 2.4G RF Antenna 2.4G RF Chip BT RF Chip BT RF Antenna

Report No.: NTC2012289FV00 Page 2 of 27 Table of Contents 1. Summary of Test Result ...................................................................................................................................... 4 2. General Description of EUT ................................................................................................................................ 5 3. Test Channels and Modes Detail ........................................................................................................................ 7 4. Configuration of EUT ........................................................................................................................................... 7 5. Modification of EUT ............................................................................................................................................. 7 6. Description of Support Device ............................................................................................................................. 8 7. Test Facility and Location ................................................................................................................................... 8 8. Applicable Standards and References ................................................................................................................ 9 9. Deviations and Abnormalities from Standard Conditions ................................................................................... 9 10. Test Conditions ................................................................................................................................................. 9 11. Measurement Uncertainty ............................................................................................................................... 10 12. Sample Calculations ....................................................................................................................................... 11 13. Test Items and Results ................................................................................................................................... 12 13.1 Conducted Emissions Measurement ............................................................................................................ 12 13.2 Radiated Spurious Emissions and Restricted Bands Measurement ............................................................ 16 13.3 20dB Bandwidth Measurement ..................................................................................................................... 24 13.4 Antenna Requirement ................................................................................................................................... 26 14. Test Equipment List......................................................................................................................................... 27 Report No.: NTC2012289FV00 Page 3 of 27 Revision History Report Number Description Issued Date NTC2012289FV00 Initial Issue 2021-02-24 Report No.: NTC2012289FV00 Page 4 of 27 1. Summary of Test Result FCC Rules Description of Test Result Remarks §15.207 (a) AC Power Conducted Emission PASS --- §15.249(a)/ 15.209 Radiated Emissions PASS --- §15.249(d)/ 15.205 Band Edge PASS --- §15.215(c) 20dB Bandwidth PASS --- §15.203 Antenna Requirement PASS --- Report No.: NTC2012289FV00 Page 5 of 27 2. General Description of EUT Product Information Product name: HUB Main Model Name: HUB-N Additional Model Name: HUB-X (X represents the N, C, S, F, etc.) Model Difference: These models have the same circuit schematic, construction, PCB Layout and critical components. The difference in model number and the ports to connect the product to the camera due to trading purpose. S/N: 2012-5297 Brand Name: BUFF Hardware version: 0.5 Software version: 1.11.190 Rating: DC 5V from USB Port DC 3.7V from internal battery Typical arrangement: Table-top I/O Port: N/A Accessories Information Adapter: N/A Cable: N/A Other: N/A Additional information Note: According to these model difference, all tests were performed on model HUB-N. Remark: All the information above are provided by the manufacturer. More detailed feature of the EUT please refers to the user manual. Report No.: NTC2012289FV00 Page 6 of 27 Technical Specification (2.4G Function ) Frequency Range: 2427-2457MHz Modulation Type: GFSK Number of Channel: 16 (refer to following channel list for details) Channel Space: 2MHz Antenna Type: Chip antenna Antenna Gain: 3.5 dBi (Declared by manufacturer) Channel List Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 1 2427 7 2439 13 2451 2 2429 8 2441 14 2453 3 2431 9 2443 15 2455 4 2433 10 2445 16 2457 5 2435 11 2447 6 2437 12 2449 Report No.: NTC2012289FV00 Page 7 of 27 3. Test Channels and Modes Detail Mode Channel Frequency (MHz) Modulation Data Rate (Mbps) 1 TX Low 1 2427 GFSK 1 2 TX Mid 9 2443 GFSK 1 3 TX High 16 2457 GFSK 1 4. Normal Mode --- --- --- --- --- Note: TX mode means that the EUT was programmed to be in continuously transmitting mode. 4. Configuration of EUT TX Mode Normal Mode 5. Modification of EUT No modifications are made to the EUT during all test items. EUT Test Fixture Notebook EUT Report No.: NTC2012289FV00 Page 8 of 27 6. Description of Support Device The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. No. Equipment Brand M/N S/N Cable Specification Remarks 1. Test fixture --- --- --- ---- Provided by manufacturer 2. Adapter HUWEI HW-05020 0C01 Input: AC100-240V 50/60Hz, 0.5A Output: DC5V 2A 7. Test Facility and Location Test Site : Dongguan Nore Testing Center Co., Ltd. (Dongguan NTC Co., Ltd.) Accreditations and Authorizations : The Laboratory has been assessed and proved to be in compliance with CNAS/CL01 Listed by CNAS, August 13, 2018 The Certificate Regi…

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FCC ID: OUEPCBHUB Page 1 of 11 Test Photo Radiated emission (Below 30MHz) Radiated emission (30-1000MHz) FCC ID: OUEPCBHUB Page 2 of 11 Radiated emission (Above 1000MHz) AC Power Conducted Emission