2A757-OG1005PUZZLE

OG-1005 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. FCC Radiation Exposure statement The device has been evaluatec to meel general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Shenzhen Youxing Technology Co., Ltd. Covered Equipment Certification Attestation Letter 1/23/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2A757-OG1005 Shenzhen Youxing Technology Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shenzhen Youxing Technology 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 (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Shenzhen Youxing Technology Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). <Signature>: Name: jade yang Title: Manager Company: Shenzhen Youxing Technology Co., Ltd. Date: 1/23/2026

Shenzhen Youxing Technology Co., Ltd. * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 1/23/2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2A757-OG1005 FRN of applicant: 0032711277 Per section 2.911(d)(7) of the FCC rules, [Shenzhen Youxing Technology Co., Ltd.] (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: Herland International Trading Inc FCC Registration Number (FRN): 0036324101 Physical U.S. Company Address: 1370 Valley Vista Dr Ste 200 Diamond Bar California 91765- 3921 Contact Person: Jianfeng Gao Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Signed: Printed name: jade yang Title: Manager Company Name: Shenzhen Youxing Technology Co., Ltd. Date: 1/23/2026 Agent Signed (if different from Applicant): Signed: Printed name: Jianfeng Gao Title: Manager Company Name: Herland International Trading Inc Date: 1/23/2026

Shenzhen Youxing Technology Co., Ltd. 2026-01-23 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen DL Testing Technology Co., Ltd.（101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China）to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Shenzhen Youxing Technology Co., Ltd.（Room 610, 6/F, HALO Place Phase IV, 260 Taoyuan Road, Sungang Subdistrict, Luohu District, Shenzhen China） <Signature>: Name: jade yang Title: Manager Company: Shenzhen Youxing Technology Co., Ltd.

Shenzhen Youxing Technology Co., Ltd. 2026-01-23 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, <Signature>: Name: jade yang Title: Manager Company: Shenzhen Youxing Technology Co., Ltd.

Shenzhen Youxing Technology Co., Ltd. 2026-01-23 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A757-OG1005 Product Name: PUZZLE Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...)  Schematics  Block diagram  Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature>: Name: jade yang Title: Manager Company: Shenzhen Youxing Technology Co., Ltd.

Shenzhen DL Testing Technology Co., Ltd. EUT PHOTO(External Photos) Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. ※※※※※ END OF REPORT ※※※※※

Size:16*12mm M/N: OG-1005 FCC ID: 2A757-OG1005 Label location

Shenzhen DL Testing Technology Co., Ltd. EUT PHOTO(Internal Photos) Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. ANT Shenzhen DL Testing Technology Co., Ltd. ※※※※※ END OF REPORT ※※※※※

FCC ID: 2A757-OG1005 RF Exposure Evaluation According to KDB 447498 D01 V06 and part 2.1093，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 calculation The result is rounded to one decimal place for comparison EIRP=E Meas +20log(d Meas )-104.7 EIRP is the equivalent isotropically radiated power, in dBm E Meas is the field strength of the emission at the measurement distance, in dBμV/m d Meas is the measurement distance, in m Here, Field strength (dBuV/m) EIRP (dBm) Max tune-up (mW) Frequency (MHz) Min. distance(mm) Calc. thresholds limit 59.29 -35.9 0.0003 433.92 5 0.00003 3.0 So a SAR test is not required

Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260107034R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 25 FCC Part 15C Test Report FCC ID: 2A757-OG1005 Applicant: Shenzhen Youxing Technology Co., Ltd. Address: Room 610, 6/F, HALO Place Phase IV, 260 Taoyuan Road, Sungang Subdistrict, Luohu District, Shenzhen China Manufacturer: Shenzhen Youxing Technology Co., Ltd. Address: Room 610, 6/F, HALO Place Phase IV, 260 Taoyuan Road, Sungang Subdistrict, Luohu District, Shenzhen China Product Name: PUZZLE Trade Mark: OSUGA Model Number: OG-1005 Date of Receipt: Jan. 07, 2026 Test Date: Jan. 07, 2026 - Jan. 21, 2026 Date of Report: Jan. 21, 2026 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China Applicable Standards: FCC PART 15 C 15.231 ANSI C63.10:2020 Test Result: Pass Report Number: DLE-260107034R Prepared (Test Engineer): Alisa Song 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.: DLE-260107034R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 25 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 5 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 6 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 6 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 6 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 7 3 . EMC EMISSION TEST 8 3.1 CONDUCTED EMISSION MEASUREMENT 8 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 8 3.1.2 TEST PROCEDURE 8 3.1.3 DEVIATION FROM TEST STANDARD 8 3.1.4 TEST SETUP 9 3.1.5 EUT OPERATING CONDITIONS 9 3.1.6 TEST RESULTS 9 3.2 RADIATED EMISSION MEASUREMENT 10 3.2.1 RADIATED EMISSION LIMITS 10 3.2.2 TEST PROCEDURE 11 3.2.3 DEVIATION FROM TEST STANDARD 11 3.2.4 TEST SETUP 12 3.2.5 EUT OPERATING CONDITIONS 13 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 14 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 15 3.2.8 TEST RESULTS (1GHZ~25GHZ) 18 4 . BANDWIDTH TEST 19 4.1 APPLIED PROCEDURES / LIMIT 19 4.1.1 TEST PROCEDURE 19 4.1.2 DEVIATION FROM STANDARD 19 4.1.3 TEST SETUP 19 4.1.4 EUT OPERATION CONDITIONS 19 4.1.5 TEST RESULTS 20 5 . CALCULATION OF AVERAGE FACTOR 21 5.1 APPLIED PROCEDURES / LIMIT 21 5.1.1 TEST PROCEDURE 21 5.1.2 TEST SETUP 21 5.1.3 EUT OPERATION CONDITIONS 21 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260107034R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 25 Table of Contents Page 5.1.4 TEST RESULTS 22 6 . TRANSMISSION CEASE TIME 23 6.1 APPLIED PROCEDURES / LIMIT 23 6.1.1 TEST PROCEDURE 23 6.1.2 DEVIATION FROM STANDARD 23 6.1.3 TEST SETUP 23 6.1.4 EUT OPERATION CONDITIONS 23 6.1.5 TEST RESULTS 24 7 . ANTENNA REQUIREMENT 25 7.1 STANDARD REQUIREMENT 25 7.2 EUT ANTENNA 25 8 . TEST SEUUP PHOTO 25 9 . EUT PHOTO 25 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260107034R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 25 1.. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.231) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission N/A 15.209,15.231b Fundamental &Radiated Spurious Emission Measurement PASS 15.231a Transmission cease time PASS 15.215 20dB Bandwidth PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Test lab: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China FCC Test Firm Registration Number: 854456 Designation Number: CN1307 IC Registered No.: 27485 CAB ID.: CN0118 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% 8 20dB Bandwidth ±0.2MHz Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260107034R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 25 2.. GENERAL INFORMATION 2.1. GENERAL DESCRIPTION OF EUT Product Name: PUZZLE Trade Mark: OSUGA Model Number: OG-1005 Model Difference N/A Operation Frequency: 433.92MHz Channel numbers: 1 Channels Modulation technology: ASK Antenna Type: Internal Antenna Antenna gain: 1.5dBi Power supply: DC 3V from battery 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. 2.2. DESCRIPTION OF TEST MODES Note: (1) New battery is used during the test. (2) The test was conducted by pressing the middle button of the product. 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 effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively. Pretest Mode Description Mode 1 TX Mode Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260107034R Test Report Tel: 400-688-3552 Web:w…

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ShenzhenYua n Dong li DigitalTechnologyCo., Ltd. Address:3F, BuildingA, RuixingSciencePark, No.6 Sanhe Road, DalangPeak Community,LonghuaDistrict,Shenzhen Phone:86-755-8326-6570Fax: 86-755-83255400 1 433.92 Antenn a Prod uct Approval Ti me: 2020-12-4 1. Introduction to Antennas Our 433.92 ANT is directly fabricated on a PCB board using a copper-soldered and tin-plated process. The copper foil thickness is H/HOZ, and the board is made of FR-4 material with a 1.0mm thickness. She nz hen Yua n Dong li DigitalTechnologyCo ., Ltd. Address:3F, BuildingA, RuixingSciencePark, No.6 SanheRoad, DalangPeak Community,Longhua District,Shenzhen Phone:86-755-8326-6570Fax: 86-755-83255400 2 II . Antenna Shape 1. Dimension diagram: mm ShenzhenYuanDongliDigitalTechnologyCo.,Ltd. Address:3F,BuildingA,RuixingSciencePark,No.6SanheRoad,DalangPeakCommunity,LonghuaDistrict,Shenzhen Phone:86-755-8326-6570Fax:86-755-83255400 3 III.AntennaParameters Antennacenterfrequency:433MHz;bandwidth:420-446MHz;gain:1.5dBi(omnidir- ectional),resonatinginthisfrequencyband.Thetablebelowliststheantenna'skeyparameters. 433Mbuilt-inantenna Frequency(MHz)420~446MHz VSWR≤1.92 Impedance50OhmNominal PolarizationVerticalpolarization Powercapacity 1W Gain (Peak)1.5dBi Standingwavebandwidth ≥26MHz Productiveness>25%

Shenzhen DL Testing Technology Co., Ltd. EUT TEST PHOTO Radiated Measurement Photos Shenzhen DL Testing Technology Co., Ltd. ※※※※※ END OF REPORT ※※※※※