2AMMQ-ST21Smart Tag

Tips for Android Phone Battery Replacement and Renewal CR2032 Scan and Download SwiftFinder SwiftFinder SwiftFinder Duo Connecting... 2 - with the Apple Find My app - with the SwiftFinder app Find My / SwiftFinder About the Find My network Legal Declaration Meli [email protected] 425 200 5168 2 3 4 5 1 SwiftFinder Duo 5 SwiftFinder Duo Connecting...

Swift IoT Tech (Shenzhen) Co., LTD. 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. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 9/21/2023 U.S. Agent Designation [Swift IoT Tech (Shenzhen) 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: 2AMMQ-ST21): Name and company of U.S. agent: Sijie Zhang / THREE STONES MEDIA LLC Physical U.S. address of agent: 1200 Broadway St. APT 329, Los Angeles, CA90015 FRN of U.S. agent: 0033401761 Email address of U.S. agent: [email protected] [THREE STONES MEDIA LLC] acknowledges their obligation to accept service of process on behalf of [Swift IoT Tech (Shenzhen) Co., LTD.]. [Swift IoT Tech (Shenzhen) Co., LTD.] with the FRN [0026632224] accepts its obligation to maintain an agent for service of process in the United States for no less than one 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). Sincerely, Signature [Name] Manqi Yao [Title] manager [Company] Swift IoT Tech (Shenzhen) Co., LTD. Signature [Name of U.S. agent] Sijie Zhang [Title of U.S. agent] [Company of U.S. agent] THREE STONES MEDIA LLC 48_[model] US_Agent_2.911(d)(7) - U, V04

ATTACHMENT PHOTOGRAPHS OF EUT Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6

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FCC ID:2AMMQ-ST21 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: Antenna Type: PCB Antenna Antenna Gain: 1.9 dBi 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 1g SAR Exclusion threshold SAR test exclusion 2.4024.32.6924±15.03.162<50.980203.00YES 2.444.332.7104±15.03.162<50.987933.00YES 2.4804.082.5594±15.03.162<50.995993.00YES 2.4024.32.6924±15.03.162<50.980203.00YES 2.444.342.7164±15.03.162<50.987933.00YES 2.4804.112.5764±15.03.162<50.995993.00YES BLE(1M) BLE(2M) Conclusion: For the max result : 0.99599≤ 3.0 for 1-g SAR, No SAR is required. Signature: Date: 9/21/2023 NAME AND TITLE (Please print or type): Alex /Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen 518126 P.R. China

Report No.: S23090501901001 Version.1.3 Page 1 of 75 RADIO TEST REPORT FCC ID: 2AMMQ-ST21 Product: Smart Tag Trade Mark: SwiftFinder Model No.: ST21 Duo Family Model: ST21, ST21 Duo+, ST21 Pro, ST21 Plus, ST31, ST31 Duo, ST31 Duo+, ST31 Pro, ST31 Plus, ST41, ST41 Duo, ST41 Duo+, ST41 Pro, ST41 Plus Report No.: S23090501901001 Issue Date: Sep 12, 2023 Prepared for Swift IoT Tech (Shenzhen) Co., LTD. Suite 617, Building A, Dachong Business Center, 9680 Shennan Boulevard, Nanshan District, Shenzhen, China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community,Xixiang Street Bao’an District, Shenzhen 518126 P.R. China Tel. 400-800-6106, 0755-2320 0050, 0755-2320 0090 Website: http://www.ntek.org.cn Report No.: S23090501901001 Version.1.3 Page 2 of 75 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 4 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 5 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 6 3.1 FACILITIES..................................................................................................................................................... 6 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 6 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 6 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 7 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 9 6 SETUP OF EQUIPMENT UNDER TEST ......................................................................................................... 10 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ..................................................................... 10 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 11 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 12 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.1.1 Applicable Standard .................................................................................................................................. 13 7.1.2 Conformance Limit ................................................................................................................................... 13 7.1.3 Measuring Instruments ............................................................................................................................. 13 7.1.4 Test Configuration .................................................................................................................................... 13 7.1.5 Test Procedure ........................................................................................................................................... 13 7.1.6 Test Results ................................................................................................................................................ 14 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 15 7.2.1 Applicable Standard .................................................................................................................................. 15 7.2.2 Conformance Limit ................................................................................................................................... 15 7.2.3 Measuring Instruments ............................................................................................................................. 16 7.2.4 Test Configuration .................................................................................................................................... 16 7.2.5 Test Procedure ........................................................................................................................................... 17 7.2.6 Test Results ................................................................................................................................................ 18 7.3 6DB BANDWIDTH ....................................................................................................................................... 24 7.3.1 Applicable Standard .................................................................................................................................. 24 7.3.2 Conformance Limit ................................................................................................................................... 24 7.3.3 Measuring Instruments ............................................................................................................................. 24 7.3.4 Test Setup .................................................................................................................................................. 24 7.3.5 Test Procedure ........................................................................................................................................... 24 7.3.6 Test Results ......................................................................................…

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ANT specification sheet 2023年8月15日 Antenna size 12*3.3mm 匹配电路 C17 并0.75pF L2 串4.3nH C15 串0欧姆 L3 串0欧姆 S11&Smith 2D pattern 3D pattern 2400MHz2500MHz2450MHz Antenna efficiency and maximum gain Frequency（MHz）Effi(%)Effi(dB)Peak Gain 240042%-3.8 1.0 241042%-3.8 0.9 242044%-3.5 1.0 243044%-3.6 1.3 244045%-3.5 1.3 245046%-3.4 1.3 246043%-3.7 1.5 247045%-3.4 1.6 248042%-3.8 1.8 249043%-3.7 1.8 250042%-3.8 1.9 Average43%-3.6 1.4

Radiated Measurement Photos