2AIWP-EFOILRCefoil s1 remote controller

HW efoil S1 Instruction 23 01 05 09 10 11 06 07 08 03 04 02 Overview3 21 25 30 32 33 36 4 7 9 19 Assembly steps Troubleshooting Specifications of each component After-sales service policy Operation guide Getting started Maintenance and storage Packing list Components description Safety guide 1 Introduction Thank you for purchasing this product! HW efoil S1 is the first-generation efoil produced by Shenzhen Hobbywing Technology Co., Ltd. (hereinafter referred to as Hobbywing Technology). The brushless power system is developed by Hobbywing Technology. It provides surging power for efoils. HW efoil S1 is refined aesthetically, agile control and excellent performance to meet the various needs of riders. HW efoil S1 is easy to take off, and has excellent speed, battery life expectancy and the lift performance is great. It is the perfect choice for riders who want to combine leisure, entertainment and pursuit of excitement. HW efoil S1 product includes board, battery, power system, hydrofoil and other sub- products. Choose according to your needs. Introduction ................................................3 Disclaimer ...................................................4 Warning .....................................................4 User guide ..................................................4 Usage safety guide ......................................5 Power system safety guide ..........................6 Battery safety guide ....................................6 Charging safety guide .................................6 Box 1: Board ...............................................7 Box 2: Smart battery ...................................7 Box 3: Battery charger .................................8 Box 4: Convenience box ..............................8 Install mast ...............................................19 Install hydrofoils ........................................19 Install the battery ......................................20 Pre-Use guide ..........................................21 Launch the efoil ........................................25 Climb onto the board ...............................25 Startup .....................................................26 Low speed practice ...................................26 Kneeling and riding ...................................26 Standing and riding ..................................27 Foiling .......................................................28 Riding advice ............................................30 After use maintenance ..............................30 Regular maintenance ................................31 Storage .....................................................31 Board ..........................................................9 Power system ..............................................9 Remote control .........................................10 Remote control display ..............................11 Remote control operation guide ................12 Battery ......................................................16 APP ...........................................................18 Pairing of efoil ..........................................18 Board ........................................................33 Power system ............................................34 Battery ......................................................35 Remote control .........................................35 Charger ....................................................36 Service strategy .........................................36 After-sales service timetable ......................36 After-sales service process .........................37 Not covered by warranty ...........................38 After-sales service statement .....................38 Freight introduction ..................................38 01 Overview ①： Battery ②： board ③： Mast ④： ESC ⑤： Front wing ⑥： Propeller ⑦： Motor ⑧： Back wing ① ② ④ ⑤ ③ ⑥ ⑦ ⑧ Usage environment guide ........................21 After use guide ........................................22 Charging guide ........................................22 Important operating precautions ..............24 45 1 2 3 User guide Usage safety guide Warning •There are certain inherent risks in using this product and participating in this sport. You should use it with caution based on your physical condition and athletic ability; • You need to be over 16 years old (or according to local laws) to use this product. If you are under 16 years old, you need to use it under the guidance of a professional instructor • Do not use this product if you are one of the following people: 1) People suffering from heart disease, cardiovascular disease, skin disease, acute conjunctivitis, severe trachoma, otitis media, etc.; •This product is only allowed to be used on water. Necessary safety measures should be taken when using this product, and life jackets and safety helmets should be worn; • When using this product, ensure that the water depth is at least 1.5 meters. When using, please be sure to pay attention to the underwater environment (such as rocks, plants, animals, etc.) and the water surface environment (such as the distance to the shore, boats, other water sports people, etc.); • Do not use this product in waters with swimmers or divers. Do not use this product in waters with obstacles or many animals and plants; • Do not use this product in bad weather conditions; • Do not allow others to use this product without fully understanding the correct usage procedures and risks of this product; • Please make sure that all components are not damaged before use. Do not use damaged or faulty products or components; • Please ensure that no foreign matter (such as water, sand or other debris) penetrates into the product components before use; • Please make sure to ride the efoil at a safe speed during use so that the efoil can stop in time to avoid any possible sudden dangers; • Please make sure to keep a certain distance from the shore during use so that yo…

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SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. 101-402.Bldg 4,Yasen Hi-tech Industrial Park, 8 Chengxin Rd.,Baolong Town, Longgang Dist., Shenzhen , China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-3-11 U.S. Agent Designation SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2AIWP-EFOILRC): Name and company of U.S. agent: ACT Lab LLC Physical U.S. address of agent: 3280 East 59th Street Long Beach, CA 90805 United States FRN of U.S. agent: 0033465568 Email address of U.S. agent: [email protected] ACT Lab LLC acknowledges their obligation to accept service of process on behalf of SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. with the FRN [0035223122] accepts 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. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Ji Qing He N/A SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. Signature Scott Huber Senior Technical Director ACT Lab LLC 48_[model] US_Agent_2.911(d)(7)-U, V05

FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Photo 3 Appearance of EUT Photo 4 Appearance of EUT

FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Appendix IFCC ID Label FCC ID: 2AIWP-EFOILRC Model: HWERCW-2301 FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Appendix II ID Label Location ID LOCATION

FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Appendix IV EUT Internal Photographs Photo 5 Internal of EUT Photo 6 Internal of EUT BLE Antenna 2.4G Antenna GNSS RX Antenna FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Photo 7 Appearance of PCB Photo 8 Appearance of PCB

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202312-0265-1 Page: 1 of 3 TB-RF-074-1.0 1 A/F., Building.6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao’an, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 RF Exposure Evaluation FCC ID: 2AIWP-EFOILRC 1. Client Information Applicant : SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. Address : 101-402.Bldg 4,Yasen Hi-tech Industrial Park, 8 Chengxin Rd.,Baolong Town, Longgang Dist., Shenzhen, China Manufacturer : SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. Address : 101-402.Bldg 4,Yasen Hi-tech Industrial Park, 8 Chengxin Rd.,Baolong Town, Longgang Dist., Shenzhen, China 2. General Description of EUT EUT Name : efoil s1 remote controller Model(s) No. : HWERCW-2301 Model Different : ---- Product Description : Operation Frequency: 2.4GHz:2404MHz~2480MHz Bluetooth LE5.1: 2402MHz~2480MHz Number of Channel: 2.4G: 71 channels BLE: 40 channels Antenna Gain: 2.12dBi FPC Antenna for 2.4G 0dBi PCB Antenna for BLE Modulation Type: GFSK Bit Rate of Transmitter: Bluetooth LE:1/2Mbps Power Rating : Input: DC 5V Li-ion Polymer Battery : 3.7V by 2500mAh Rechargeable Li-ion battery Software Version : V1.0 Hardware Version : HW7011-YT1-V1.4 Remark: (1) The antenna gain provided by the applicant, the verified for the RF conduction test provided by TOBY test lab. (2) The above antenna information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications, the laboratory shall not be held responsible. Note: More test information about the EUT please refer the RF Test Report. Report No.: TBR-C-202312-0265-1 Page: 2 of 3 TB-RF-074-1.0 SAR Test Exclusion Calculations 1. FCC: According to KDB 447498 D01 Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies v06. (1) Clause 4.3: General SAR test reduction and exclusion guidance Sub clause 4.31: Standalone SAR test exclusion considerations 1) The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6GHz at test separation distance≤5 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation, mm)]*[√f (GHz) ] ≤3.0 for 1-g SAR [(max. power of channel, including tune-up tolerance, mW)/(min. test separation, mm)]*[√f (GHz) ] ≤7.5.0 for 10-g SAR 2. Summary simultaneous transmission for SAR Exclusion The SAR exemption limits outlined in clause 4.3.2(b) of KDB 447498 have been derived based on an approximate SAR value of 0.4 W/kg using half-wave dipole antennas Footnote 1. As such, when simultaneous transmitter SAR evaluations include transmitters that have been exempt from routine SAR evaluation, the SAR must be estimating based on the ratio between the maximum tune-up tolerance limit of the transmitter that has been exempt and the exemption limit at the specific distance and frequency for that transmitter. This ratio must be multiplied by 0.4 W/kg(2.0 W/kg for controlled use and 1.0 W/kg for limb worn devices) in order to calculate the estimated SAR level. The estimate SAR value is calculated based the following equation: (maximum power level including tune-up tolerance for transmitter A / maximum power level of exemption at the same frequency and distance) * 0.4W/kg The [∑ of (the highest measured or estimated SAR for each standalone antenna configuration, adjusted for maximum tune-up tolerance) / 1.6 W/kg] + [∑ of MPE ratios] is ≤ 1.0. The SAR to peak location separation ratios of all simultaneously transmitting antenna pairs operating in portable device exposure conditions are all ≤ 0.04, and the [∑ of MPE ratios] is ≤ 1.0. Report No.: TBR-C-202312-0265-1 Page: 3 of 3 TB-RF-074-1.0 3. Calculation: Bluetooth LE Mode(1Mbps) Frequency (GHz) Conducted Power (dBm) Turn-up Power Tolerance (dB) Max power of tune up tolerance (dBm) Max power of tune up tolerance (mw) Calculation Value Threshold Value 2.402 -2.184 -2±1 -1 0.794 0.246 3.0 2.440 -2.236 -2±1 -1 0.794 0.248 3.0 2.480 -2.527 -3±1 -2 0.631 0.199 3.0 Bluetooth LE Mode(2Mbps) Frequency (GHz) Conducted Power (dBm) Turn-up Power Tolerance (dB) Max power of tune up tolerance (dBm) Max power of tune up tolerance (mw) Calculation Value Threshold Value 2.402 -2.093 -2±1 -1 0.794 0.246 3.0 2.440 -1.918 -2±1 -1 0.794 0.248 3.0 2.480 -2.469 -2±1 -1 0.794 0.250 3.0 2.4GHz Frequency (GHz) Conducted Power (dBm) Turn-up Power Tolerance (dB) Max power of tune up tolerance (dBm) Max power of tune up tolerance (mw) Calculation Value Threshold Value 2.404 5.743 6±1 7 5.012 1.554 3.0 2.442 6.309 6±1 7 5.012 1.566 3.0 2.480 7.267 7±1 8 6.310 1.987 3.0 Simultaneous Transmission for SAR Exclusion Simultaneous Transmission for SAR Exclusion Total Calculation Value Limit Bluetooth LE 2.4G 0.033 0.209 0.151 1.0 Note: The sample support one Bluetooth LE modular and 2.4G modular, they supports difference antenna, need consider ∑ of (the highest measured or estimated SAR 2.4G +SAR 2.4G )/1.6 = (0.033 +0.209)/1.6 = 0.151< 1.0; Conclusion: The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06. -----END OF REPORT-----

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26-0.76 0.00 -5.25-2.46-1.86 MAX. Gain PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dBi) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500 0.00 -22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain (dBi) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202312-0265-2 Page: 1 of 36 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Radio Test Report FCC ID: 2AIWP-EFOILRC Report No. : TBR-C-202312-0265-2 Applicant : SHENZHEN HOBBYWING TECHNOLOGY CO., LTD. Equipment Under Test (EUT) EUT Name : efoil s1 remote controller Model No. : HWERCW-2301 Series Model No. : ---- Brand Name : HOBBYWING Sample ID : 202312-0265-1-1#& 202312-0265-1-2# Receipt Date : 2024-01-08 Test Date : 2024-01-08 to 2024-02-20 Issue Date : 2024-02-23 Standards : FCC Part 15 Subpart C 15.247 Test Method : ANSI C63.10: 2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Tested By : Mike Yan Reviewed By : Seven Wu Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202312-0265-2 Page: 2 of 36 TB-RF-074-1.0 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT ............................................................................. 5 1.1 Client Information ................................................................................................................. 5 1.2 General Description of EUT (Equipment Under Test) ................................................... 5 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 6 1.4 Description of Support Units .............................................................................................. 7 1.6 Description of Test Software Setting ................................................................................ 8 1.7 Measurement Uncertainty .................................................................................................. 8 1.8 Test Facility ........................................................................................................................... 9 2. TEST SUMMARY ..................................................................................................................... 10 3. TEST SOFTWARE ................................................................................................................... 10 4. TEST EQUIPMENT AND TEST SITE ................................................................................... 11 5. CONDUCTED EMISSION ....................................................................................................... 13 5.1 Test Standard and Limit .................................................................................................... 13 5.2 Test Setup ........................................................................................................................... 13 5.3 Test Procedure ................................................................................................................... 13 5.4 Deviation From Test Standard ......................................................................................... 14 5.5 EUT Operating Mode ........................................................................................................ 14 5.6 Test Data ............................................................................................................................. 14 6. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 15 6.1 Test Standard and Limit .................................................................................................... 15 6.2 Test Setup ........................................................................................................................... 16 6.3 Test Procedure ................................................................................................................... 17 6.4 Deviation From Test Standard ......................................................................................... 18 6.5 EUT Operating Mode ........................................................................................................ 18 6.6 Test Data ............................................................................................................................. 18 7. RESTRICTED BANDS REQUIREMENT ............................................................................. 19 7.1 Test Standard and Limit .................................................................................................... 19 7.2 Test Setup ........................................................................................................................... 19 7.3 Test Procedure ................................................................................................................... 20 7.4 Deviation From Test Standard ......................................................................................... 21 7.5 EUT Operating Mode ........................................................................................................ 21 7.6 Test Data ............................................................................................................................. 21 8. BANDWIDTH TEST ................................................................................................................. 22 8.1 Test Standard and Limit .................................................................................................... 22 8.2 Test Setup ....................................................................................................................…

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FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Appendix V EUT Test Photographs 15C Test Setup Photo of Setup for Radiated Emission (Above 1 GHz) Photo of Setup for Radiated Emission (Below 1 GHz) FCC ID: 2AIWP-EFOILRC TB-RF-074-1.0 Photo of Setup for Conducted Emission -----END OF REPORT-----