2A6V6-F18Anti-lost device

Dongguan Yuyang Innovation Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 [January 21, 2026] U.S. Agent Designation [Dongguan Yuyang Innovation 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: 2A6V6-F18 Name and company of U.S. agent: [GLOCERTS TECHNOLOGY INC] Physical U.S. address of agent: [19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507] FRN of U.S. agent: [0036339737] Email address of U.S. agent: [[email protected]] Telephone of U.S.agent: (626) 588-8039 [GLOCERTS TECHNOLOGY INC] acknowledges their obligation to accept service of process on behalf of [Dongguan Yuyang Innovation Technology Co., Ltd.]. [Dongguan Yuyang Innovation Technology Co., Ltd.] with the FRN [0032412918] accepts its obligation to maintain an agent for service of process in the United States for no less than 1 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. Sincerely, Signature Signature [Xuanming Liu] [Huiying Fan] [General Manager] [Director] [Dongguan Yuyang Innovation Technology Co., Ltd.] [GLOCERTS TECHNOLOGY INC]

Dongguan Yuyang Innovation Technology Co., Ltd. (January 20, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for FCC ID: 2A6V6-F18 [Dongguan Yuyang Innovation 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) Xuanming Liu Dongguan Yuyang Innovation Technology Co., Ltd. (January 20, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for FCC ID: 2A6V6-F18 [Dongguan Yuyang Innovation 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 an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Xuanming Liu

Dongguan Yuyang Innovation Technology Co., Ltd. (January 20, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Anti-lost device / F18 / FCC ID: 2A6V6- F18) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Xuanming Liu Title: General Manager

Dongguan Yuyang Innovation Technology Co., Ltd. (January 20, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) 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). This agreement expires one year from the current date. Sincerely, Signature: Name: Xuanming Liu Title: General Manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 3 Model: F18 External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 3 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 3

FCC ID LABEL: Label Location: FCC ID: 2A6V6-F18 Model No.: F18

Shenzhen CTB Testing Co., Ltd. FCC ID:2A6V6-F18 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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 calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 0.547 1.13 0±1 1.00 1.26 <5 0.39023 3.00 YES 2.44 1.485 1.41 1±1 2.00 1.58 <5 0.49514 3.00 YES 2.480 1.312 1.35 1±1 2.00 1.58 <5 0.49918 3.00 YES GFSK Conclusion: For the max result : 0.49918≤ FCC Limit 3.0 for 1g SAR.

2.4GHz 3216 Chip Antenna: RANT3216F245C07 _ Application: WLAN, 802.11b/g, Bluetooth, WLAN, etc... Features SMD, high reliability, ultra Impact, Omni-directional... Part number Information RANT3216F245C07 (A) (B) (C) (D)(E) (F) Electrical Specification Dimension and Terminal Configuration No.Terminal Name 1Feeding/GNG 2GND/Feeding (A)Product TypeChip Antenna (B) Size Code 3.2x1.6mm( ± 0.2mm) (C) MaterialHigh K material (D) Frequency2.4 ~ 2.5GHz (E) Feeding modePIFA & Single Feeding (F) Antenna typeType=07 Working Frequency Range2400 ~2500 MHz Bandwidth120 MHz (Min.) Peak Gain2.7 dBi (Typ.) Impedance50 Ohm Return loss10 dB ( Min) PolarizationLinear Azimuth BeamwidthOmni-directional Operation Temperature( °C )-40 ~85 °C Resistance to Soldering Heats 10sec. ( @ 280 °C ) TerminationNi / Au (Leadless) Dimension (mm) L 3.20±0.20 W 1.60±0.20 T 0.85±0.20 電話:13530576606 咏成國際科技有限公司 RAIN International Technology Co., Ltd. 17F-3, No. 738, Zhongzheng Rd., Zhonghe Dist., New Taipei City, Taiwan TEL: 13530576606 2.4GHz3216 Chip Antenna:RANT3216F245C07 _ 1 EvaluationBoardReference PCB DimensionAntennaLayoutReference Unit :mm ElectricalCharacteristics ReturnLoss & Radiation ReturnLoss Frequency(MHz) S11 (dB) 2400-10.50 2450-30.62 2500-11.47 Radiation X Y Z 2.4GHz3216 Chip Antenna:RANT3216F245C07 _ TapingSpecifications Reel and TapingSpecification Reel Specification TYPESIZEABCD 32167”4K/Reel 9.0 ±0.5 60 ±213.5 ±0.5178 ±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType3216 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 2.4GHz3216 Chip Antenna:RANT3216F245C07 _ ReliabilityTable Test ItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfillthe electrical specification UserSpec. Thermal Shock 1. Preconditioning: 50 ± 10°C/ 1 hr , then keepfor 24 ± 1 hrs at roomtemp. 2. Initialmeasure:Spec:refer Initialspec. 3. Rapidchangeof temperaturetest: -30°Cto +85°C; 100 cycles; 15 minutesat Lowercategorytemperature; 15 minutesat Uppercategorytemperature. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 107 Temperature Cycling 1. Initialmeasure:Spec:refer Initialspec. 2. 100 Cycles(-30°Cto +85°C), SoakMode=1(2 Cycle/hours). 3. Measurementat 24 ± 2Hoursafter test condition. No VisibleDamage. Fulfillthe electrical specification. JESD22 JA104 High Temperature Exposure 1. Initialmeasure:Spec:refer Initialspec. 2. Unpowered;500hours@ T=+85°C. 3. Measurementat 24 ± 2 hoursafter test. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 108 Low Temperature Storage 1. Initialmeasure:Spec:refer Initialspec. 2. Unpowered:500hours@ T= -30°C. 3. Measurementat 24 ± 2 hoursafter test. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 108 Solderability (SMD BottomSide) Dippingmethod: a. Temperature:235 ±5°C b. Dippingtime:3 ±0.5s The soldershouldcover over 95% of the critical area of bottomside. IEC 60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150 ± 10 °C. Preheatingtime:1~2 min. Soldertemperature:260 ± 5°C. Dippingtime:5 ± 0.5s No VisibleDamage.IEC 60384-21/22 4.10 Vibration5g's for 20 min.,12 cycleseachof 3 orientations Note:Use 8"X5"PCB .031"thick 7 securepointson, one long side and 2 securepointsat cornersof oppositesides.Parts mountedwithin2" from any securepoint.Test from 10-2000 Hz. No VisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksin eachdirectionshall be appliedalongthe three mutuallyperpendicularaxesof the test specimen(18 shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4 ft/s Waveform:Half-sine No VisibleDamage.MIL-STD-202 Method213 Humidity Bias 1. Humidity:85% R.H.,Temperature:85 ± 2 °C. 2. Time:500 ± 24 hours. 3. Measurementat 24 ± 2hrs after test condition. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 Method106 2.4GHz 3216 Chip Antenna: RANT3216F245C07 _ Board Flex (SMD) 1. Mounting method: IR-Reflow. PCB Size (L:100 × W:40 × T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. No Visible Damage.AEC-Q200 005 AdhesionForce of 1.8Kg for 60 seconds.No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. AEC-Q200 006 Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 Revision History RevisionDateContent 12019/03/01New Datasheet 22020/02/22Add 2D radiation characteristic

Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 32 TEST REPORT Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Test item description: Anti-lost device FCC ID: 2A6V6-F18 Trademark(s): N/A Model/Type reference: F18 Applicant’s name: Dongguan Yuyang Innovation Technology Co., Ltd. Address: Room 201, Building 3, No. 15 Dunlong Road, Tangxia Town, Dongguan City, Guangdong Province Manufacturer: Dongguan Yuyang Innovation Technology Co., Ltd. Address: Room 201, Building 3, No. 15 Dunlong Road, Tangxia Town, Dongguan City, Guangdong Province Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Nov. 05, 2025 Sample tested Date: Nov. 05, 2025 to Jan. 09, 2026 Issue Date: Jan. 09, 2026 Report No.: CTB25110505008RF01 Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2020 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB25110505008RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 32 TABLE OF CONTENT Test Report Declaration Page 1.VERSION ........................................................................................................................................ 3 2.TEST SUMMARY ........................................................................................................................... 4 3.MEASUREMENT UNCERTAINTY ................................................................................................. 5 4.PRODUCT INFORMATION AND TEST SETUP ............................................................................ 6 4.1 Product Information .......................................................................................................................... 6 4.2 Test Setup Configuration .................................................................................................................. 6 4.3 Support Equipment........................................................................................................................... 6 4.4 Channel List ..................................................................................................................................... 7 4.5 Test Mode ........................................................................................................................................ 7 4.6 Test Environment ............................................................................................................................. 7 5.TEST FACILITY AND TEST INSTRUMENT USED ....................................................................... 8 5.1 Test Facility ...................................................................................................................................... 8 5.2 Test Instrument Used ....................................................................................................................... 8 6.AC POWER LINE CONDUCTED EMISSION ................................................................................ 10 6.1 Block Diagram Of Test Setup ......................................................................................................... 10 6.2 Limit ................................................................................................................................................ 10 6.3 Test procedure ............................................................................................................................... 10 6.4 Test Result ..................................................................................................................................... 12 7.RADIATED SPURIOUS EMISSION ............................................................................................. 13 7.1 Block Diagram Of Test Setup ......................................................................................................... 13 7.2 Limit ................................................................................................................................................ 13 7.3 Test procedure ............................................................................................................................... 13 7.4 Test Result ..................................................................................................................................... 15 8.BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ............................................... 22 8.1 Block Diagram Of Test Setup ......................................................................................................... 22 8.2 Limit ................................................................................................................................................ 22 8.3 Test procedure ............................................................................................................................... 22 8.4 Test Result ..................................................................................................................................... 23 9.COUDUCTED OUTPUT POWER ................................................................................................. …

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: F18 Radiated Emission Below 1G Above 1G