2A9GT-K8Self-Balancing Scooter

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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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.

Yongkang Zhitong Industry & Trade Co., Ltd. Agent Authorization Company: Yongkang Zhitong Industry & Trade Co., Ltd. Address: 2nd Floor, No. 1 Building, No.26 Xinya Road, Industrial Functional Zone Zhiying Town, Yongkang City, Jinhua City, Zhejiang Province, China Product Name: Self-Balancing Scooter Model Number(s): K8 Product Description: Self-Balancing Scooter FCC ID: 2A9GT-K8 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: 2022-11-21 Name: Nicole Chen Title: Manager Company: Yongkang Zhitong Industry & Trade Co., Ltd.

Yongkang Zhitong Industry & Trade Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022-11-21 Subject; Request for Confidentiality FCC ID: 2A9GT-K8 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 Parts List Operational Description Tune-up Procedure 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. Sincerely, Signature: Name: Nicole Chen Title: Manager

Yongkang Zhitong Industry & Trade Co., Ltd. Responsibility Declaration Letter v1.0 Responsibility Declaration Letter Company: Yongkang Zhitong Industry & Trade Co., Ltd. Address: 2nd Floor, No. 1 Building, No.26 Xinya Road, Industrial Functional Zone Zhiying Town, Yongkang City, Jinhua City, Zhejiang Province, China Product Name: Self-Balancing Scooter Model Number(s): K8 Product Description: Self-Balancing Scooter FCC ID: 2A9GT-K8 We, [Yongkang Zhitong Industry & Trade Co., Ltd.], hereby acknowledge that all the product information (including all original, drafted, or modified documents) provided to the TCB either by us or our agent or representative(s) for the purposes of FCC certification will meet FCC regulations and requirements; and that any modifications or changes made as a result of TCB review of the documents will be formally implemented into the manufacturing process and product documentation shipped with equipment. We also confirm that all information provided is legitimate and does not contain any false content such as forgery, fabrication, alteration, tampering and concealment. We assume all economic and legal responsibilities in matters that may arise as a result of disclosure on sample products and associated product documentation provided for product certification that may subsequently be found to be a mis- representation of the final product and accompanying documentation when produced, marketed, or sold in the United States, Canada, or anywhere in the world. Your sincerely, Name: Nicole Chen Date: 2022-11-21 Title and Company name: Manager/ Yongkang Zhitong Industry & Trade Co., Ltd. Signature of FCC grant holder (Include Title, Company name, date, and official company stamp):

Size:22*20mm M/N: K8 FCC ID: 2A9GT-K8 Label location

ANT

蓝牙天线规格 深圳市芯海科技有限公司 版权所有不得复制 1 ： Antenna Description Antenna TypePCB Antenna Antenna peak gain1.07dBi Frequency range 2.402GHz～2.480GHz Connect typeDirect Connect 2：Antenna picture on the PCB borad 3Ú 2‹ Œøº∑ø ̈∑±≤ Ω∏øÆøΩ ̈ªÆ∑≠ ̈∑Ω≠ ±∫ ø≤ ̈ª≤≤ø PHI 0° PHI90° THETA90 ° Frequency VNA (MHz) Gain (Peak) (dBi) 2400MHz0.043624 2410MHz0.081832 2420MHz0.20836 2430MHz0.11420 2440MHz0.2293 2450MHz0.075285 2460MHz0.43026 2470MHz0.63025 2480MHz0.36852 2490MHz1.063085 2500MHz1.074296

Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221116004E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 36 FCC Part 15C Test Report FCC ID: 2A9GT-K8 Applicant: Yongkang Zhitong Industry & Trade Co., Ltd. Address: 2nd Floor, No. 1 Building, No.26 Xinya Road, Industrial Functional Zone Zhiying Town, Yongkang City, Jinhua City, Zhejiang Province, China Manufacturer: Yongkang Zhitong Industry & Trade Co., Ltd. Address: 2nd Floor, No. 1 Building, No.26 Xinya Road, Industrial Functional Zone Zhiying Town, Yongkang City, Jinhua City, Zhejiang Province, China EUT: Self-Balancing Scooter Trade Mark: N/A Model Number: K8 Date of Receipt: Nov. 05, 2022 Test Date: Nov. 05, 2022 - Nov. 16, 2022 Date of Report: Nov. 16, 2022 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Building C, Shuanghuan, No.8, Baoqing Road, Baolong Industrial Zone, Baolong Street, Longgang District, Shenzhen, Guangdong, China Applicable Standards: FCC PART 15 C 15.249 ANSI C63.10:2013 Test Result: Pass Report Number: DL-20221116004E Prepared (Test Engineer): Pxing Huang Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221116004E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 36 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 4 1.1 MEASUREMENT UNCERTAINTY 4 2 . GENERAL INFORMATION 5 2.1 GENERAL DESCRIPTION OF EUT 5 2.2 DESCRIPTION OF TEST MODES 6 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 7 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 7 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 7 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 8 3 . EMC EMISSION TEST 9 3.1 CONDUCTED EMISSION MEASUREMENT 9 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 9 3.1.2 TEST PROCEDURE 9 3.1.3 DEVIATION FROM TEST STANDARD 9 3.1.4 TEST SETUP 10 3.1.5 EUT OPERATING CONDITIONS 10 3.1.6 TEST RESULTS 10 3.2 RADIATED EMISSION MEASUREMENT 13 3.2.1 RADIATED EMISSION LIMITS 13 3.2.2 TEST PROCEDURE 14 3.2.3 DEVIATION FROM TEST STANDARD 14 3.2.4 TEST SETUP 14 3.2.5 EUT OPERATING CONDITIONS 15 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 16 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 17 3.2.8 TEST RESULTS (1GHZ~25GHZ) 19 3.3 RADIATED BAND EMISSION MEASUREMENT 20 3.3.1 TEST REQUIREMENT: 20 3.3.2 TEST PROCEDURE 20 3.3.3 DEVIATION FROM TEST STANDARD 20 3.3.4 TEST SETUP 21 3.3.5 EUT OPERATING CONDITIONS 21 4 . BANDWIDTH TEST 23 4.1 APPLIED PROCEDURES / LIMIT 23 4.1.1 TEST PROCEDURE 23 4.1.2 DEVIATION FROM STANDARD 23 4.1.3 TEST SETUP 23 4.1.4 EUT OPERATION CONDITIONS 23 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221116004E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 36 Table of Contents Page 4.1.5 TEST RESULTS 24 5 . ANTENNA REQUIREMENT 25 5.1 STANDARD REQUIREMENT 25 5.2 EUT ANTENNA 25 6 . TEST SEUUP PHOTO 26 7 . EUT PHOTO 28 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221116004E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 36 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.249) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.205(a), 15.209(a) 15.249(a), 15.249(c) Fundamental &Radiated Spurious Emission Measurement PASS 15.249(d) Band Edge Emission PASS 15.215(c) 20dB Bandwidth PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report 1.1 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 Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221116004E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 36 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product Name: Self-Balancing Scooter Trademark N/A Model No.: K8 Model Difference N/A Operation Frequency: 2402~2480MHz Channel numbers: 40 Channels Channel separation: 2M Modulation technology: GFSK Antenna Type: Internal Antenna Antenna gain: 1.07dBi Power supply: DC 55V from battery DC 42V from adapter Adapter: Model No.: YLT-42-1500 Input: 100-240VAC, 50/60Hz, 0.5A Output: DC 42V/1500mA Note: 1.For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2.The EUT’s all information provided by client. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221116004E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 6 of 36 3. Channel List Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 00 2402 14 2430 27 2456 01 2404 15 2432 28 2458 02 2406 16 2434 29 2460 03 2408 17 2436 30 2462 04 2410 18 2438 31 2464 05 2412 19 2440 32 2466 06 2414 20 2442 33 2468 07 2416 21 2444 34 2470 08 2418 22 2446 35 2472 09 2420 23 2448 36 2474 10 2422 24 2450 37 2476 11 2424 25 2452 38 2478 12 2426 26 2454 39 2480 13 2428 / / / / 2.2 DESCRIPTION OF TEST MODES Note: (1) The measurements are performed at the highest, middle, lowest available channels. (2) A new fully charged battery was used for testing during the test. 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 possible have e…

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Radiated Measurement Photos Conducted Measurement Photos