2APN5-SNZB02ULZigbee Temperature Humidity Sensor

ShenzhenSonoffTechnologiesCo.,Ltd. 2026-08-03 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor(FCCID:2APN5-SNZB02UL) [ShenzhenSonoffTechnologiesCo.,Ltd.](“theapplicant”)certifiesthattheequipment forwhichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceiving anequipmentauthorizationpursuanttosection2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipmentdoes notutilizecyber-securityoranti-virussoftwarefromKasperskyLab,Inc,oranyofits successorsandassignees,whichisalsoonthe“coveredlist”. Sincerely, StanLi Manager ShenzhenSonoffTechnologiesCo.,Ltd. ShenzhenSonoffTechnologiesCo.,Ltd. 2026-08-03 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor(FCCID:2APN5-SNZB02UL) [ShenzhenSonoffTechnologiesCo.,Ltd.](“theapplicant”)certifiesthat,asofthedate ofthefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListasan entityproducing“covered”equipment. Sincerely, StanLi Manager ShenzhenSonoffTechnologiesCo.,Ltd.

AttestationStatements (2026-08-03) TO:FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046,USA RE:AttestationStatementsPart2.911(d)(7)requestfor(FCCID:2APN5-SNZB02UL) (ShenzhenSonoffTechnologiesCo.,Ltd.),theundersigned,herebyauthorize(SONOFF TECHNOLOGYLLC)toactasourdesignatedU.S.agentforserviceofprocess,(Shenzhen SonoffTechnologiesCo.,Ltd.)acceptstomaintainanagentfornolessthanoneyear afterthegranteehasterminatedallmarketingandimportationortheconclusionofany Commission-relatedproceedinginvolvingtheequipment. (SONOFFTECHNOLOGYLLC)acceptstheresponsibilitytoactasdesignatedU.S.agent forserviceofprocess. ApplicantInformation： Companyname:ShenzhenSonoffTechnologiesCo.,Ltd. ContactName:StanLi Address:3F&6F,BldgA,No.663,BulongRd,Shenzhen,Guangdong,China FRN:0027467786 TelephoneNo:0755-29610458 Email:[email protected] Signature [StanLi] U.S.AgentInformation: CompanyName:SONOFFTECHNOLOGYLLC Address:14777NE40thSt,Suite201Bellevue,WA98007 FRN:0035597152 ContactName:KEBINZHANG TelephoneNo:4256238360 Email:[email protected] Signature [KEBINZHANG]

ShenzhenSonoffTechnologiesCo.,Ltd. 2026-08-03 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeGuangdongGlobalTestingTechnologyCo.,Ltd.toacton ourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthesigning ofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, StanLi Manager ShenzhenSonoffTechnologiesCo.,Ltd.

ShenzhenSonoffTechnologiesCo.,Ltd. 2026-08-03 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR(EUTName:ZigbeeTemperature HumiditySensor/Model:SNZB-02UL/FCCID:2APN5-SNZB02UL) ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459 ofCFR47.Wehaverequestedthatthe(BlockDiagram,OperationalDescription, Schematics)requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrom publicreview. Theabovedocumentsarecompanyproprietaryinformationthatcouldneverget intothepossessionofyourcompetition). Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, StanLi Manager ShenzhenSonoffTechnologiesCo.,Ltd.

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变更内容 日期 变更者 版本 8 A B 765432 1 910111213141516 C D E F G H I J K L 1 2 指定公差等级A 0<L≤3 ±0.05 制图 日期 审核 日期 批准 日期 李文博 26/05/28 单位 比例 图框 物料编码： 3<L≤6 ±0.1 6<L≤16 ±0.15 ±0.2 30<L≤120 ±0.25 120<L≤315 ±0.3 87654321910111213141516 A B C D E F G H I J K L 16<L≤30 1:1A5MM V1.0 第1/1页 图号 版本 物料名称： SNZB-02UL-电池盖 测试要求 测试项 测试项 测试要求 低温存储(-40°C) 冷热冲击(-40~70°C) 百格测试 RCA试验(100圈/150圈..) 铅笔硬度测试(3H/4H..) 酒精耐摩擦测试 □ □ □ □ □ 球压试验(125°C/70°C) 灼热丝试验(850°C/650°C) UV老化测试(72H/48H) 冰醋酸测试(3min/5min) 盐雾试验(24/36/48H..) 高温存储(70°C) □ □ □ □ □ RoHS检测 签样图纸，初版发放 26/05/28 李文博 投影 视角 镭雕/丝印附着力测试 □□ 颜色要求 潘通号 颜色坐标值 材质品牌型号 比例 阻燃等级 李文博 26/05/28 □ 达因值(32/34/36dyn/cm) □ □ □ 镭雕位置 镭雕内容 4.02 mm 1 . 3 3 m m

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RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) FCC ID: 2APN5-SNZB02UL EUT Specification EUT Zigbee Temperature Humidity Sensor Frequency band (Operating) Zigbee: 2.405GHz ~ 2.480GHz Device category Portable (<20cm separation) Mobile (>20cm separation) Exposure classification Occupational/Controlled exposure (S = 5mW/cm 2 ) General Population/Uncontrolled exposure (S=1mW/cm 2 ) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. output power Zigbee: 5.63 dBm Antenna gain (Max) Zigbee: -1.16 dBi Evaluation applied MPE Evaluation SAR Evaluation 2 / 3 Limits for Maximum Permissible Exposure(MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where P d = Power density in mW/cm 2 , P out =output power to antenna in mW. G= gain of antenna in linear scale, Pi=3.1416 R= distance between observation point and center of the radiator in cm=20cm P d the limit of MPE, 1mW/cm 2 . If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. For multiple RF sources: Multiple RF sources are exempt if: in the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation Evaluated k : the maximum reported SAR or MPE of fixed, mobile, or portable RF source k either in the device or at the transmitter site from an existing evaluation at the location of exposure. Exposure Limit k : either the general population/uncontrolled maximum permissible exposure (MPE) or specific Absorption rate (SAR) limit for each fixed, mobile, or portable RF source k. 3 / 3 Measurement Result Operation Mode Channel Frequency (MHz) Max Measured Power (dBm) Tune up tolerance (dBm) Max tune up conducted power (dBm) Output Peak power (mW) Ant. Gain (dBi) Ant. Gain (numeric) Power density at 20cm (mW/ cm2) Power density Limits (mW/ cm2) Results Zigbee 2480 5.63 5±1 6 3.981 -1.16 0.766 0.00061 1 PASS No need to test SAR. Signature: Alan He Date: 2026-07-23

Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT Zigbee 2405 Ant1 100 0 0 NVNT Zigbee 2440 Ant1 100 0 0 NVNT Zigbee 2480 Ant1 100 0 0 2 / 22 Duty Cycle NVNT Zigbee 2405MHz Ant1 Duty Cycle NVNT Zigbee 2440MHz Ant1 3 / 22 Duty Cycle NVNT Zigbee 2480MHz Ant1 4 / 22 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Total Conducted Power (W) Limit Conducted(dBm) Verdict NVNT Zigbee 2405 Ant1 3.15 0.00207 30 Pass NVNT Zigbee 2440 Ant1 3.67 0.00233 30 Pass NVNT Zigbee 2480 Ant1 5.63 0.00366 30 Pass 5 / 22 Peak Power NVNT Zigbee 2405MHz Ant1 Peak Power NVNT Zigbee 2440MHz Ant1 6 / 22 Peak Power NVNT Zigbee 2480MHz Ant1 7 / 22 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT Zigbee 2405 Ant1 1.433 0.5 Pass NVNT Zigbee 2440 Ant1 1.545 0.5 Pass NVNT Zigbee 2480 Ant1 1.378 0.5 Pass 8 / 22 -6dB Bandwidth NVNT Zigbee 2405MHz Ant1 -6dB Bandwidth NVNT Zigbee 2440MHz Ant1 9 / 22 -6dB Bandwidth NVNT Zigbee 2480MHz Ant1 10 / 22 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT Zigbee 2405 Ant1 2.281 NVNT Zigbee 2440 Ant1 2.2503 NVNT Zigbee 2480 Ant1 2.0421 11 / 22 OBW NVNT Zigbee 2405MHz Ant1 OBW NVNT Zigbee 2440MHz Ant1 12 / 22 OBW NVNT Zigbee 2480MHz Ant1 13 / 22 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT Zigbee 2405 Ant1 -9.79 8 Pass NVNT Zigbee 2440 Ant1 -9.2 8 Pass NVNT Zigbee 2480 Ant1 -7.12 8 Pass 14 / 22 PSD NVNT Zigbee 2405MHz Ant1 PSD NVNT Zigbee 2440MHz Ant1 15 / 22 PSD NVNT Zigbee 2480MHz Ant1 16 / 22 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT Zigbee 2405 Ant1 -43.47 -20 Pass NVNT Zigbee 2480 Ant1 -55.55 -20 Pass 17 / 22 Band Edge NVNT Zigbee 2405MHz Ant1 Ref Band Edge NVNT Zigbee 2405MHz Ant1 Emission 18 / 22 Band Edge NVNT Zigbee 2480MHz Ant1 Ref Band Edge NVNT Zigbee 2480MHz Ant1 Emission 19 / 22 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT Zigbee 2405 Ant1 -43.64 -20 Pass NVNT Zigbee 2440 Ant1 -44.06 -20 Pass NVNT Zigbee 2480 Ant1 -45.31 -20 Pass 20 / 22 Tx. Spurious NVNT Zigbee 2405MHz Ant1 Ref Tx. Spurious NVNT Zigbee 2405MHz Ant1 Emission 21 / 22 Tx. Spurious NVNT Zigbee 2440MHz Ant1 Ref Tx. Spurious NVNT Zigbee 2440MHz Ant1 Emission 22 / 22 Tx. Spurious NVNT Zigbee 2480MHz Ant1 Ref Tx. Spurious NVNT Zigbee 2480MHz Ant1 Emission

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For Zigbee Temperature Humidity Sensor MODEL NUMBER: SNZB-02UL REPORT NUMBER: E04A26070700F00201 ISSUE DATE: July 22, 2026 FCC ID: 2APN5-SNZB02UL Prepared for Shenzhen Sonoff Technologies Co., Ltd. 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26070700F00201 Page 2 of 36 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 July 22, 2026 Initial Issue REPORT NO.: E04A26070700F00201 Page 3 of 36 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Limit/Requirement Result Antenna Requirement FCC Part 15.203/15.247 (c) Pass AC Power Line Conducted Emission FCC Part 15.207 N/A Conducted Output Power FCC Part 15.247 (b)(3) Pass 6dB Bandwidth and 99% Occupied Bandwidth FCC Part 15.247 (a)(2) Pass Power Spectral Density FCC Part 15.247 (e) Pass Conducted Band edge and spurious emission FCC Part 15.247(d) Pass Radiated Band edge and Spurious Emission FCC Part 15.205/15.209 Pass Duty Cycle None; for reporting purposes only. Pass Note: *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART C> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26070700F00201 Page 4 of 36 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. CHANNEL LIST ........................................................................................................ 8 5.3. Maximum Peak Output Power ................................................................................... 8 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 9 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ........................................................... 9 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................... 9 5.8. SETUP DIAGRAM .................................................................................................. 10 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 11 7. ANTENNA PORT TEST RESULTS ..................................................................................... 13 7.1. Conducted Output Power ........................................................................................ 13 7.2. 6dB Bandwidth ........................................................................................................ 14 7.3. Power Spectral Density ........................................................................................... 16 7.4. Conducted Band edge and spurious emission ........................................................ 17 7.5. Duty Cycle .............................................................................................................. 19 8. RADIATED TEST RESULTS ............................................................................................... 20 8.1. Radiated Band edge and Spurious Emission .......................................................... 25 9. ANTENNA REQUIREMENT ................................................................................................ 36 REPORT NO.: E04A26070700F00201 Page 5 of 36 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: Shenzhen Sonoff Technologies Co., Ltd. Address: 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China Manufacturer Information Company Name: Shenzhen Sonoff Technologies Co., Ltd. Address: 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China EUT Information Product Description: Zigbee Temperature Humidity Sensor Model: SNZB-02UL Series Model: / Brand: SONOFF Sample Received Date: July 16, 2026 Sample Status: Normal Sample ID: A26070700 001 Date of Tested: July 16, 2026 to July 22, 2026 APPLICABLE STANDARDS STANDARD TEST RESULTS CFR 47 FCC PART 15 SUBPART C Pass Prepared By: Checked By: Ekko Wu Alan He Project Engineer Laboratory Leader Approved By: Alan He Laboratory Manager REPORT NO.: E04A26070700F00201 Page 6 of 36 TRF No.: 04-E001-0B Global Testing , Great Quality. 2. TEST METHODOLOGY All tests were performed in accordanc…

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ANTENNA SPECIFICATION Product description: 2.4G ceramic Antenna Uni Link’s part number: Issue Date: 2026.03.02 Note: 2400-2500MHZ 1 、（PRODUCT TECHNICAL SPECIFICATION） Electrical Specifications Frequency Range (MHz) 2400-2483 Input Impendence (Ω) 50 V.S.W.R ≤2 Gain(dBi) -1.16 Polarization Type Line Polarization Power Capacity (w) / Mechanical Specifications Antenna Length (mm) NC Radiator ceramic Connect Type SMT Working Temp( °C) -40~85 Storage Temperature(°C) -40~85 antenna size 3.10*1.55*0.55mm Weight(g) / 2、PRODUCT PICTURE 3 、PRODUCT SPECIFICATION CHART 4、Image of antenna field shape test

Setup Photographs Radiated Band edge and Spurious Emission