2BS66-DF51Toy series

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. Changes or modifications to this unit 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. This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter. Radiation Exposure Statement for Remote Control The device has been evaluated to meet general RF exposure requirement in portable exposure condition without restriction.

XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Dec. 3, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: 2BS66-DF51 Product Name: Toy series This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name: Zhou style Zhuan Title: Manager Address: END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Tel.: 13825831822 Email: [email protected] XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Dec. 3, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BS66-DF51 XINGRONG PLASTICS CO.,LTD (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name: Zhou style Zhuan Title: Manager Address: END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Tel.: 13825831822 Email: [email protected]

XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China December 3, 2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BS66-DF51 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below : ⎯ Block Diagram ⎯ Schematics ⎯ Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Pursuant to DA 04-1705, the applicant also requests temporary confidential treatment of the exhibits outlined below for a period of 0 days from the date of equipment authorization and prior to marketing in the United States to prevent the premature release of any sensitive information. Applicant is aware of their responsibility to notify DERYCOM in the event information regarding the product or the product is made available to the public before the requested period has expired. Sincerely, Title: Manager Address: END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Tel.: 13825831822 Email: [email protected]

XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China December 3, 2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BS66-DF51 I, the undersigned, hereby authorize Shenzhen Tongzhou Testing Co.,Ltd. to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by Shenzhen Tongzhou Testing Co.,Ltd. shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with XINGRONG PLASTICS CO.,LTD. We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, Zhou style Zhuan Manager Tel: 13825831822 Fax: N/A Email: [email protected]

XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Date: 2025/12/3 Dear Sir/Madam, We, XINGRONG PLASTICS CO.,LTD, Hereby declares the following statement, PCB board, circuit, structure and internal of these model(s) are the same, Only model name and appearance color are different for these model: Product name: Toy series FCC ID: 2BS66-DF51 Model no.: DF51, DF61 Sincerely, Name/Title： Zhou style Zhuan / Manager Company: XINGRONG PLASTICS CO.,LTD Address: END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Phone: 13825831822 Fax: N/A E-Mail: [email protected]

Report No.: TZ0035250946PH02 Page 1 of 3 Exterior Photographs of EUT Figure 1 Figure 2 Report No.: TZ0035250946PH02 Page 2 of 3 Figure 3 Figure 4 Report No.: TZ0035250946PH02 Page 3 of 3 Figure 5 Figure 6

Label Location FCC ID: 2BS66-DF51

Report No.: TZ0035250946PH03 Page 1 of 3 Interior Photographs of EUT Figure 1 Figure 2 Report No.: TZ0035250946PH03 Page 2 of 3 Figure 3 Figure 4 SRD Antenna Report No.: TZ0035250946PH03 Page 3 of 3 Figure 5

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BS66-DF51 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 RADIO FREQUENCY EXPOSURE Limit According to section 4.3.1 of KDB 447498 D01 General RF Exposure Guidance v06, SAR evaluation is required if the separation distance between the user and/or bystander and the antenna and/or radiating element of the device is less than or equal to 20 cm, except when the device operates at or below the applicable output power level (adjusted for tune-up tolerance) for the specified separation distance defined in Appendix A. Appendix A SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm MHz 5 10 15 20 25 mm 150 39 77 116 155 194 SAR Test Exclusion Threshold (mW) 300 27 55 82 110 137 450 22 45 67 89 112 835 16 33 49 66 82 900 16 32 47 63 79 1500 12 24 37 49 61 1900 11 22 33 44 54 2450 10 19 29 38 48 3600 8 16 24 32 40 5200 7 13 20 26 33 5400 6 13 19 26 32 5800 6 12 19 25 31 MHz 30 35 40 45 50 mm 150 232 271 310 349 387 SAR Test Exclusion Threshold (mW) 300 164 192 219 246 274 450 134 157 179 201 224 835 98 115 131 148 164 900 95 111 126 142 158 1500 73 86 98 110 122 1900 65 76 87 98 109 2450 57 67 77 86 96 3600 47 55 63 71 79 5200 39 46 53 59 66 5400 39 45 52 58 65 5800 37 44 50 56 62 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BS66-DF51 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Results RF Exposure at Separation distance (cm): 0.5 Mode Antenna Frequency [MHz] Conducted Power [dBm] Manufacturing tolerance Conducted Power including Tune Up Calculation Value for 1g SAR Exemption Limit for 1g SAR Target Power [dBm] Tolerance ±[dB] [dBm] [mW] BLE_1M Ant1 2405 4.86 4.5 1 5.5 3.55 1.10 3 BLE_1M Ant1 2440 4.78 4.5 1 5.5 3.55 1.11 3 BLE_1M Ant1 2475 4.81 4.5 1 5.5 3.55 1.12 3 Note: 1. Calculation Value = [(max. power of channel, mW) / (min. test separation distance, mm)] ·[√f(GHz)]. Conclusion: The SAR evaluation is not required.

Report No.: TZ0035250946FRF12 Page 1 of 30 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. The test report apply only to the specific sample(s) tested under stated test conditions. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. TEST REPORT Report Number : TZ0035250946FRF12 Product Name : Toy series Model/Type reference : DF51, DF61 FCC ID : 2BS66-DF51 Prepared for : XINGRONG PLASTICS CO.,LTD END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd. 1st Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Standards : FCC CFR Title 47 Part 15C, ANSI C63.10-2020 Date of Test : 2025-10-22 ~ 2025-10-31 Date of Issue : 2025-11-03 Prepared by : Nancy Li Reviewed by : Allen Lai Approved by : Max Zhang (Authorized Officer) Report No.: TZ0035250946FRF12 Page 2 of 30 ** Report Revise Record ** Report Version Revise Time Issued Date Valid Version Notes V1.0 / 2025-11-03 Valid Initial release Report No.: TZ0035250946FRF12 Page 3 of 30 TABLE OF CONTENTS 1. G E N E R A L I N F O R M A T I O N ........................................................ 4 1.1. Client Information ................................................................................................................... 4 1.2. Description of Device (EUT) ................................................................................................... 4 1.3. Wireless Function Tested in this Report .............................................................................. 4 1.4. EUT configuration ................................................................................................................... 5 1.5. Description of Test Facility .................................................................................................... 5 1.6. Statement of the Measurement Uncertainty ......................................................................... 6 1.7. Measurement Uncertainty ...................................................................................................... 6 1.8. Description of Test Modes ..................................................................................................... 6 1.9. Frequency of Channels .......................................................................................................... 6 2. T E S T M E T H O D O L O G Y ............................................................ 8 2.1. EUT Configuration .................................................................................................................. 8 2.2. EUT Exercise ........................................................................................................................... 8 2.3. Test Sample ............................................................................................................................. 8 3. S Y S T E M T E S T C O N F I G U R A T I O N .............................................. 9 3.1. Justification ............................................................................................................................. 9 3.2. EUT Exercise Software ........................................................................................................... 9 3.3. Special Accessories ............................................................................................................... 9 3.4. Block Diagram/Schematics .................................................................................................... 9 3.5. Equipment Modifications ....................................................................................................... 9 3.6. Test Setup ................................................................................................................................ 9 4. S U M M A R Y O F T E S T R E S U L T S ................................................ 10 5. T E S T R E S U L T ..................................................................... 11 5.1. On Time and Duty Cycle ....................................................................................................... 11 5.2. Maximum Peak Conducted Output Power Measurement ................................................. 12 5.3. Power Spectral Density Measurement ................................................................................ 13 5.4. 6 dB Spectrum Bandwidth and Occupied Channel Bandwidth Measurement ............... 14 5.5. Radiated Emissions Measurement ...................................................................................... 15 5.6. Conducted Spurious Emissions and Band Edges Test .................................................... 23 5.8. Band-edge measurements for radiated emissions ........................................................... 25 5.9. Antenna Requirements ......................................................................................................... 28 6. L I S T O F M E A S U R I N G E Q U I P M E N T .......................................... 29 7. T E S T S E T U P P H O T O G R A P H S O F E U T ...................................... 30 8. E X T E R I O R P H O T O G R A P H S O F E U T ......................................... 30 9. I N T E R I O R P H O T O G R A P H S O F E U T .......................................... 30 Report No.: TZ0035250946FRF12 Page 4 of 30 1. G E N E R A L I N F O R M A T I O N 1.1. Client Information Applicant : XINGRONG PLASTICS CO.,LTD Address : END OF DENGFENG ROAD, GUANGYI STREET, CHENGHAI DISTRICT, SHANTOU, China Man…

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Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 1 of 23 Appendix Test Data for SRD (Conducted Measurement) Product Name: Toy series Trade Mark: / Test Model: DF51 FCC ID: 2BS66-DF51 Environmental Conditions Temperature: 23.5°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Max Zhang NOTE N/A Appendix A: DTS Bandwidth Test Result Test Mode Antenna Frequency [MHz] DTS BW [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict SRD Ant1 2405 0.580 2404.852 2405.432 0.5 PASS SRD Ant1 2440 0.604 2439.844 2440.448 0.5 PASS SRD Ant1 2475 0.608 2474.840 2475.448 0.5 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 2 of 23 Test Graphs SRD-Ant1-2405-PASS SRD-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 3 of 23 SRD-Ant1-2475-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 4 of 23 Appendix B: Occupied Channel Bandwidth Test Result Test Mode Antenna Frequency [MHz] OCB [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict SRD Ant1 2405 1.0536 2404.6104 2405.6640 --- --- SRD Ant1 2440 1.1128 2439.5589 2440.6717 --- --- SRD Ant1 2475 1.1103 2474.5675 2475.6778 --- --- Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 5 of 23 Test Graphs SRD-Ant1-2405 SRD-Ant1-2440 Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 6 of 23 SRD-Ant1-2475 Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 7 of 23 Appendix C: Maximum peak conducted output power Test Result Peak Test Mode Antenna Frequency [MHz] Conducted Peak Power [dBm] Conducted Limit [dBm] Verdict SRD Ant1 2405 4.86 ≤30 PASS SRD Ant1 2440 4.78 ≤30 PASS SRD Ant1 2475 4.81 ≤30 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 8 of 23 Test Graphs Peak SRD-Ant1-2405-PASS SRD-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 9 of 23 SRD-Ant1-2475-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 10 of 23 Appendix D: Maximum peak power spectral density Test Result Test Mode Antenna Frequency [MHz] Result [dBm/3kHz] Limit [dBm/3kHz] Verdict SRD Ant1 2405 -1.38 ≤8.00 PASS SRD Ant1 2440 -2.11 ≤8.00 PASS SRD Ant1 2475 -1.31 ≤8.00 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 11 of 23 Test Graphs SRD-Ant1-2405-PASS SRD-Ant1-2440-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 12 of 23 SRD-Ant1-2475-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 13 of 23 Appendix E: Band edge measurements Test Result Test Mode Antenna Ch. Name Frequency [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict SRD Ant1 Low 2405 2.28 -40.67 ≤-17.72 PASS SRD Ant1 High 2475 1.49 -45.31 ≤-18.51 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 14 of 23 Test Graphs SRD-Ant1-2405-PASS SRD-Ant1-2475-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 15 of 23 Appendix F: Conducted Spurious Emission Test Result Test Mode Antenna Frequency [MHz] Freq. Range [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict SRD Ant1 2405 0~Reference 2.79 2.79 --- PASS SRD Ant1 2405 30~1000 2.79 -62.48 ≤-17.21 PASS SRD Ant1 2405 1000~26500 2.79 -45.5 ≤-17.21 PASS SRD Ant1 2440 0~Reference 2.91 2.91 --- PASS SRD Ant1 2440 30~1000 2.91 -62.77 ≤-17.09 PASS SRD Ant1 2440 1000~26500 2.91 -44.97 ≤-17.09 PASS SRD Ant1 2475 0~Reference 2.95 2.95 --- PASS SRD Ant1 2475 30~1000 2.95 -61.44 ≤-17.05 PASS SRD Ant1 2475 1000~26500 2.95 -44.82 ≤-17.05 PASS Note: offset(dB) in Reference test plots = cable loss(dB) + attenuator factor(dB); For spurious emissions plots from 30MHz to 26.5GHz, the cable loss and attenuator factors have been set in the 'Input Correction' of the Spectrum Analyzer during the test. Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 16 of 23 Test Graphs SRD-Ant1-2405-0~Reference-PASS SRD-Ant1-2405-30~1000-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 17 of 23 SRD-Ant1-2405-1000~26500-PASS SRD-Ant1-2440-0~Reference-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 18 of 23 SRD-Ant1-2440-30~1000-PASS SRD-Ant1-2440-1000~26500-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 19 of 23 SRD-Ant1-2475-0~Reference-PASS SRD-Ant1-2475-30~1000-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 20 of 23 SRD-Ant1-2475-1000~26500-PASS Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 21 of 23 Appendix G: Duty Cycle Test Result Test Mode Antenna Frequency [MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor [dB] SRD Ant1 2405 0.18 0.30 60.00 2.22 SRD Ant1 2440 0.18 0.31 58.26 2.35 SRD Ant1 2475 0.18 0.29 62.07 2.07 Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 22 of 23 Test Graphs NTNV-SRD-Ant1-2405 NTNV-SRD-Ant1-2440 Appendix Test Data of the Report No.: TZ0035250946FRF12 Page 23 of 23 NTNV-SRD-Ant1-2475

Report No.: TZ0035250946PH01 Page 1 of 1 Test Setup Photos of the EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz