2AK3Z-202103Remote Controller for Toy Car

Shantou Dihua trading Co., Ltd Date (04/06/2021) TUV SUD BABT UNLIMITED TCB Octagon House, Segensworth North, Fareham, Hampshire, PO15 5RL, United Kingdom Confidentiality Request FCC ID: 2AK3Z-202103 Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission's Rules, Shantou Dihua trading Co., Ltd hereby requests permanent confidential treatment of information accompanying this application as outlined below: Schematics Bill of Materials/Parts List Block Diagrams Theory of Operation Shantou Dihua trading Co., Ltd also hereby requests short-term confidential treatment of information accompanying this application as outlined below for a period of (180) days: Internal Photos External Photos User Manual Test Set-up Photographs The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Yours sincerely, Company Officer: Sales manager Telephone Number: 0754-86311626 Email: [email protected]

Shantou Dihua trading Co., Ltd file: declaration letter-template Page 1 of 1 Model differences declaration letter Date (04/06/2021) We: Shantou Dihua trading Co., Ltd Address: No.1 Leshan road, Shantou, Guangdong, China Officially notify the have the same technical construction including circuit diagram, PCB Layout, components and component layout, all electrical construction and mechanical construction, the difference lies only in model name of the different models. Product Name: 1:10 CRAWLER model name: TRCDH1235, PT2026, PT2026VAR FCC ID: 2AK3Z-202103 Yours sincerely, Contact name:: Kevin Chan Telephone Number: 0754-86311626 Email: [email protected]

EMC_SZ_FR_20.00 E-I Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 1 of 2 Details of: External View Model: TRCDH1235 Details of: External view Model: TRCDH1235 EMC_SZ_FR_20.00 E-I Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 2 of 2 Details of: External view Model: TRCDH1235 Details of: External view Model: TRCDH1235

LABEL ARTWORK AND LOCATION 1.4*4.5cm Model: TRCDH1235 FCC ID: 2AK3Z-202103 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. Made in China

EMC_SZ_FR_20.00 E-I Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 1 of 2 Details of: Internal view Model: TRCDH1235 Details of: PCB view Model: TRCDH1235 Antenna EMC_SZ_FR_20.00 E-I Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 2 of 2 Details of: PCB view Model: TRCDH1235

Report Number: 68.740.21.0076.01A TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 RF exposure Estimation Introduction TRCDH1235 (FCC ID: 2AK3Z-202103) is a 1:10 CRAWLER operating at 2407-2475MHz. 1. Limit and Guidelines on Exposure to Electromagnetic Fields According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB 447498 D01 General RF Exposure Guidance v06, Mobile Portable RF Exposure, no SAR required if power is lower than the flowing threshold: The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where • f(GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation25 • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 2. Calculation method [(max. power of` channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 According to ANSI C63.10-2013 (9.5 Equations to calculate EIRP), Report Number: 68.740.21.0076.01A TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Field Strength (EMeas): 52.84 (dBuV/m) (f=2407MHz) Measurement Distance(dMeas): 3 (m) Equivalent Isotropically Radiated Power(EIRP): 6.309 (mW) Radiated Power + tune up tolerance = 6.309mW Distance = 5 mm f = 2.407 GHz [6.309/5] * SQRT(2.407) =1.95 1.95 ≤ 3.0 Therefore, excluded from SAR testing. TUV SUD China, Shenzhen Branch Reviewed by: Prepared By: Dawi Xu/ EMC Project Manager Richard He/EMC Project Engineer Date: 2021-04-22 Date: 2021-04-22

Report Number: 68.910.21.0031.01 EMC_SZ_FR_23.00 FCC Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 1 of 22 FCC - TEST REPORT Report Number : 68.910.21.0031.01 Date of Issue: May 13, 2021 Model : TRCDH1235 Serial Model PT2026, PT2026VAR Product Type : 1:10 CRAWLER Applicant : Shantou Dihua trading Co., Ltd Address : No.1 Leshan road, Shantou, Guangdong, China Manufacturer : Shantou Dihua trading Co., Ltd Address : No.1 Leshan road, Shantou, Guangdong, China Test Result : ◼ Positive  Negative Total pages including Appendices : 22 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch is a subcontractor to TÜV SÜD Product Service GmbH according to the principles outlined in ISO 17025. TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch reports apply only to the specific samples tested under stated test conditions. Construction of the actual test samples has been documented. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. The manufacturer/importer is responsible to the Competent Authorities in Europe for any modifications made to the production units which result in non-compliance to the relevant regulations. TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch shall have no liability for any deductions, inferences or generalizations drawn by the client or others from TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch issued reports. This report is the confidential property of the client. As a mutual protection to our clients, the public and ourselves, extracts from the test report shall not be reproduced except in full without our written approval Report Number: 68.910.21.0031.01 EMC_SZ_FR_23.00 FCC Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 2 of 22 1 Table of Contents 1 Table of Contents ................................................................................................................................................................. 2 2 Details about the Test Laboratory ........................................................................................................................................ 3 3 Description of the Equipment Under Test ........................................................................................................................... 4 4 Summary of Test Standards ................................................................................................................................................. 5 5 Summary of Test Results ..................................................................................................................................................... 6 6 General Remarks ................................................................................................................................................................. 7 7 Test setups ........................................................................................................................................................................... 8 8 Systems test configuration ................................................................................................................................................... 9 9 Technical Requirement ...................................................................................................................................................... 10 9.1 Field strength of emissions and Restricted bands ....................................................................................................... 10 9.2 Out of Band Emissions ............................................................................................................................................... 14 9.3 20dB Bandwidth & 99% Occupied Bandwidth .......................................................................................................... 17 10 Test equipment lists ......................................................................................................................................................... 21 11 System Measurement Uncertainty ................................................................................................................................... 22 Report Number: 68.910.21.0031.01 EMC_SZ_FR_23.00 FCC Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 3 of 22 2 Details about the Test Laboratory Details about the Test Laboratory Test Site 1 Company name: TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China FCC Registration Number: 514049 FCC Designation Number: CN5009 Telephone: 86 755 8828 6998 Fax: 86 755 8828 5299 Report Number: 68.910.21.0031.01 EMC_SZ_FR_23.00 FCC Release 2014-03-20 TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299 Page 4 of 22 3 Description of the Equipment Under Test Description of the Equipment Under Test Product name: 1:10 CRAWLER Model no.: TRCDH1235, PT2026, PT2026VAR FCC ID: 2AK3Z-20210…

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