2APN5-S61STPBMatter Over WiFi Smart Plug

Shenzhen Sonoff Technologies Co., Ltd. 2026-06-29 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: 2APN5-S61STPB) [ Shenzhen Sonoff Technologies 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, Stan Li Manager Shenzhen Sonoff Technologies Co., Ltd. Shenzhen Sonoff Technologies Co., Ltd. 2026-06-29 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: 2APN5-S61STPB) [ Shenzhen Sonoff Technologies 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, Stan Li Manager Shenzhen Sonoff Technologies Co., Ltd.

AttestationStatements (2026-06-29) TO:FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046,USA RE:AttestationStatementsPart2.911(d)(7)requestfor(FCCID:2APN5-S61STPB) (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]

Shenzhen Sonoff Technologies Co., Ltd. 2026-06-29 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 Guangdong Global 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, Stan Li Manager Shenzhen Sonoff Technologies Co., Ltd.

Shenzhen Sonoff Technologies Co., Ltd. 2026-06-29 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR ( EUT Name: Matter Over WiFi Smart Plug /Model: S61STPB /FCC ID: 2APN5-S61STPB) 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 (Block Diagram, Operational Description, Schematics) required to be submitted with this application be permanently withheld from public review. The above documents are company proprietary information that could never get into the possession of your competition). Please contact me if there is any information you may need. Sincerely, Stan Li Manager Shenzhen Sonoff Technologies Co., Ltd.

External Photographs View of EUT-1 View of EUT-2 Page 2 of 3 View of EUT-3 View of EUT-4 Page 3 of 3 View of EUT-5 View of EUT-6

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 \P日 期 审核 日期 批准 \P日 期 李文博 26/04/08 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 V1.1 第1/1页 图号 版本 物料名称： S61STPB 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 26/04/08 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 □ 达因值(32/34/36dyn/cm) □ □ □ 1122-541-2347 5012520 33.00 mm 12.00 mm 8.00 mm 2.04 mm 2.05 mm 注意 字体：CSA Digits 18.19 mm 1.92 mm 15.00 mm 1 . 5 0 m m SN码:14位 字体:open sans semibold S/N: 25063500000011 1122-541-2347 5012520 主题字体：open sans semibold(sonoff主用的) 2.51 mm 4 . 4 5 m m 2 . 8 6 m m

Internal Photographs Internal View of EUT-1 Internal View of EUT-2 Page 2 of 5 Internal View of EUT-3 Internal View of EUT-4 Page 3 of 5 Internal View of EUT-5 Internal View of EUT-6 Page 4 of 5 Internal View of EUT-7 Internal View of EUT-8 BLE WIFI Antenna Page 5 of 5 Internal View of EUT-9

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 ß1.1307(b) FCC ID: 2APN5-S61STPB EUT Specification EUT Matter Over WiFi Smart Switch Frequency band (Operating) BLE: 2.402GHz ~ 2.480GHz WIFI: 2.412GHz ~ 2.462GHz 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 BLE BLE 1M: 3.14 dBm 2.4G WIFI IEEE 802.11b: 17.85 dBm IEEE 802.11g: 16.86 dBm IEEE 802.11n-HT20: 15.62 dBm Antenna gain (Max) BLE: -0.17 dBi 2.4G WIFI -0.17 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 BLE 1M 2480 3.14 3±1 4 2.512 -0.17 0.962 0.00048 1 PASS 2.4GHz WIFI (802.11b) 2462 17.85 18±1 19 79.433 -0.17 0.962 0.01383 1 PASS Maximum Simultaneous transmission MPE Ratio for Bluetooth & 2.4G WIFI Maximum MPE ratio (Bluetooth) Maximum MPE ratio (2.4G WIFI) ∑ MPE ratios Limit Results 0.00048 0.01383 0.01431 1.000 Pass No need to test SAR. Signature: Alan He Date: 2026-06-8

Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT BLE 1M 2402 Ant1 100 0 0 NVNT BLE 1M 2440 Ant1 100 0 0 NVNT BLE 1M 2480 Ant1 100 0 0 2 / 22 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 3 / 22 Duty Cycle NVNT BLE 1M 2480MHz Ant1 4 / 22 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Limit Conducted(dBm) Verdict NVNT BLE 1M 2402 Ant1 2.51 30 Pass NVNT BLE 1M 2440 Ant1 2.53 30 Pass NVNT BLE 1M 2480 Ant1 3.14 30 Pass 5 / 22 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 6 / 22 Peak Power NVNT BLE 1M 2480MHz Ant1 7 / 22 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1M 2402 Ant1 0.74 0.5 Pass NVNT BLE 1M 2440 Ant1 0.692 0.5 Pass NVNT BLE 1M 2480 Ant1 0.751 0.5 Pass 8 / 22 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 9 / 22 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 10 / 22 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT BLE 1M 2402 Ant1 1.031 NVNT BLE 1M 2440 Ant1 1.033 NVNT BLE 1M 2480 Ant1 1.034 11 / 22 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 12 / 22 OBW NVNT BLE 1M 2480MHz Ant1 13 / 22 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Duty Factor (dB) Total PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT BLE 1M 2402 Ant1 -12.21 0 -12.21 8 Pass NVNT BLE 1M 2440 Ant1 -12.48 0 -12.48 8 Pass NVNT BLE 1M 2480 Ant1 -11.44 0 -11.44 8 Pass 14 / 22 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 15 / 22 PSD NVNT BLE 1M 2480MHz Ant1 16 / 22 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -50.55 -20 Pass NVNT BLE 1M 2480 Ant1 -51.01 -20 Pass 17 / 22 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission 18 / 22 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission 19 / 22 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT BLE 1M 2402 Ant1 -56.49 -20 Pass NVNT BLE 1M 2440 Ant1 -56.55 -20 Pass NVNT BLE 1M 2480 Ant1 -55.5 -20 Pass 20 / 22 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission 21 / 22 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission 22 / 22 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission

Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT b 2412 Ant1 9.98 10.01 1.01 NVNT b 2437 Ant1 9.98 10.01 1.01 NVNT b 2462 Ant1 9.98 10.01 1.01 NVNT g 2412 Ant1 9.94 10.02 0.72 NVNT g 2437 Ant1 9.95 10.02 0.72 NVNT g 2462 Ant1 10.01 9.99 0.71 NVNT n20 2412 Ant1 9.96 10.02 0.77 NVNT n20 2437 Ant1 9.95 10.02 0.77 NVNT n20 2462 Ant1 9.95 10.02 0.77 2 / 42 Duty Cycle NVNT b 2412MHz Ant1 Duty Cycle NVNT b 2437MHz Ant1 3 / 42 Duty Cycle NVNT b 2462MHz Ant1 Duty Cycle NVNT g 2412MHz Ant1 4 / 42 Duty Cycle NVNT g 2437MHz Ant1 Duty Cycle NVNT g 2462MHz Ant1 5 / 42 Duty Cycle NVNT n20 2412MHz Ant1 Duty Cycle NVNT n20 2437MHz Ant1 6 / 42 Duty Cycle NVNT n20 2462MHz Ant1 7 / 42 Maximum Average Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Limit Conducted(dBm) Verdict NVNT b 2412 Ant1 17.36 30 Pass NVNT b 2437 Ant1 17.56 30 Pass NVNT b 2462 Ant1 17.85 30 Pass NVNT g 2412 Ant1 16.63 30 Pass NVNT g 2437 Ant1 16.66 30 Pass NVNT g 2462 Ant1 16.86 30 Pass NVNT n20 2412 Ant1 15.39 30 Pass NVNT n20 2437 Ant1 15.42 30 Pass NVNT n20 2462 Ant1 15.62 30 Pass 8 / 42 -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT b 2412 Ant1 8.121 0.5 Pass NVNT b 2437 Ant1 8.673 0.5 Pass NVNT b 2462 Ant1 8.676 0.5 Pass NVNT g 2412 Ant1 16.809 0.5 Pass NVNT g 2437 Ant1 16.479 0.5 Pass NVNT g 2462 Ant1 17.562 0.5 Pass NVNT n20 2412 Ant1 17.88 0.5 Pass NVNT n20 2437 Ant1 17.307 0.5 Pass NVNT n20 2462 Ant1 18.396 0.5 Pass 9 / 42 -6dB Bandwidth NVNT b 2412MHz Ant1 -6dB Bandwidth NVNT b 2437MHz Ant1 10 / 42 -6dB Bandwidth NVNT b 2462MHz Ant1 -6dB Bandwidth NVNT g 2412MHz Ant1 11 / 42 -6dB Bandwidth NVNT g 2437MHz Ant1 -6dB Bandwidth NVNT g 2462MHz Ant1 12 / 42 -6dB Bandwidth NVNT n20 2412MHz Ant1 -6dB Bandwidth NVNT n20 2437MHz Ant1 13 / 42 -6dB Bandwidth NVNT n20 2462MHz Ant1 14 / 42 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT b 2412 Ant1 13.601 NVNT b 2437 Ant1 13.649 NVNT b 2462 Ant1 13.643 NVNT g 2412 Ant1 17.386 NVNT g 2437 Ant1 17.461 NVNT g 2462 Ant1 17.308 NVNT n20 2412 Ant1 18.4 NVNT n20 2437 Ant1 18.067 NVNT n20 2462 Ant1 18.052 15 / 42 OBW NVNT b 2412MHz Ant1 OBW NVNT b 2437MHz Ant1 16 / 42 OBW NVNT b 2462MHz Ant1 OBW NVNT g 2412MHz Ant1 17 / 42 OBW NVNT g 2437MHz Ant1 OBW NVNT g 2462MHz Ant1 18 / 42 OBW NVNT n20 2412MHz Ant1 OBW NVNT n20 2437MHz Ant1 19 / 42 OBW NVNT n20 2462MHz Ant1 20 / 42 Maximum Power Spectral Density Level Condition Mode Frequency (MHz) Antenna Conducted PSD (dBm/3kHz) Duty Factor (dB) Total PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT b 2412 Ant1 -23.33 9.97 -13.36 8 Pass NVNT b 2437 Ant1 -21.1 10.01 -11.09 8 Pass NVNT b 2462 Ant1 -20.9 10.01 -10.89 8 Pass NVNT g 2412 Ant1 -22.68 10.02 -12.66 8 Pass NVNT g 2437 Ant1 -26.67 10.02 -16.65 8 Pass NVNT g 2462 Ant1 -25.43 10.02 -15.41 8 Pass NVNT n20 2412 Ant1 -25.11 10.02 -15.09 8 Pass NVNT n20 2437 Ant1 -25.58 10.02 -15.56 8 Pass NVNT n20 2462 Ant1 -26.03 10.02 -16.01 8 Pass 21 / 42 PSD NVNT b 2412MHz Ant1 PSD NVNT b 2437MHz Ant1 22 / 42 PSD NVNT b 2462MHz Ant1 PSD NVNT g 2412MHz Ant1 23 / 42 PSD NVNT g 2437MHz Ant1 PSD NVNT g 2462MHz Ant1 24 / 42 PSD NVNT n20 2412MHz Ant1 PSD NVNT n20 2437MHz Ant1 25 / 42 PSD NVNT n20 2462MHz Ant1 26 / 42 Band Edge Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT b 2412 Ant1 -44.54 -30 Pass NVNT b 2462 Ant1 -58.48 -30 Pass NVNT g 2412 Ant1 -37.17 -30 Pass NVNT g 2462 Ant1 -39.73 -30 Pass NVNT n20 2412 Ant1 -39.57 -30 Pass NVNT n20 2462 Ant1 -39.71 -30 Pass 27 / 42 Band Edge NVNT b 2412MHz Ant1 Ref Band Edge NVNT b 2412MHz Ant1 Emission 28 / 42 Band Edge NVNT b 2462MHz Ant1 Ref Band Edge NVNT b 2462MHz Ant1 Emission 29 / 42 Band Edge NVNT g 2412MHz Ant1 Ref Band Edge NVNT g 2412MHz Ant1 Emission 30 / 42 Band Edge NVNT g 2462MHz Ant1 Ref Band Edge NVNT g 2462MHz Ant1 Emission 31 / 42 Band Edge NVNT n20 2412MHz Ant1 Ref Band Edge NVNT n20 2412MHz Ant1 Emission 32 / 42 Band Edge NVNT n20 2462MHz Ant1 Ref Band Edge NVNT n20 2462MHz Ant1 Emission 33 / 42 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT b 2412 Ant1 -52.2 -30 Pass NVNT b 2437 Ant1 -53.85 -30 Pass NVNT b 2462 Ant1 -54.83 -30 Pass NVNT g 2412 Ant1 -51.08 -30 Pass NVNT g 2437 Ant1 -47.96 -30 Pass NVNT g 2462 Ant1 -47.84 -30 Pass NVNT n20 2412 Ant1 -51.54 -30 Pass NVNT n20 2437 Ant1 -49.12 -30 Pass NVNT n20 2462 Ant1 -48.83 -30 Pass 34 / 42 Tx. Spurious NVNT b 2412MHz Ant1 Ref Tx. Spurious NVNT b 2412MHz Ant1 Emission 35 / 42 Tx. Spurious NVNT b 2437MHz Ant1 Ref Tx. Spurious NVNT b 2437MHz Ant1 Emission 36 / 42 Tx. Spurious NVNT b 2462MHz Ant1 Ref Tx. Spurious NVNT b 2462MHz Ant1 Emission 37 / 42 Tx. Spurious NVNT g 2412MHz Ant1 Ref Tx. Spurious NVNT g 2412MHz Ant1 Emission 38 / 42 Tx. Spurious NVNT g 2437MHz Ant1 Ref Tx. Spurious NVNT g 2437MHz Ant1 Emission 39 / 42 Tx. Spurious NVNT g 2462MHz Ant1 Ref Tx. Spurious NVNT g 2462MHz Ant1 Emission 40 / 42 Tx. Spurious NVNT n20 2412MHz Ant1 Ref Tx. Spurious NVNT n20 2412MHz Ant1 Emission 41 / 42 Tx. Spurious NVNT n20 2437MHz Ant1 Ref Tx. Spurious NVNT n20 2437MHz Ant1 Emission 42 / 42 Tx. Spurious NVNT n20 2462MHz Ant1 Ref Tx. Spurious NVNT n20 2462MHz 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 Matter Over WiFi Smart Plug MODEL NUMBER: S61STPB REPORT NUMBER: E04A26050378F00101 ISSUE DATE: June 8, 2026 FCC ID: 2APN5-S61STPB 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.: E04A26050378F00101 Page 2 of 44 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 June 8, 2026 Initial Issue REPORT NO.: E04A26050378F00101 Page 3 of 44 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.1.2 FCC Part 15.247 (b)(3) Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.2 FCC Part 15.247 (a)(2) Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.2 FCC Part 15.247 (e) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: 1. For ISED, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards. *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, ISED RSS-247 Issue 4> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26050378F00101 Page 4 of 44 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 CONDUCTED OUTPUT POWER ........................................................... 9 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 and 99% Occupied 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 .......................................................... 27 9. ANTENNA REQUIREMENT ................................................................................................ 39 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 41 11. TEST DATA - APPENDIX A ................................................................................... 44 REPORT NO.: E04A26050378F00101 Page 5 of 44 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 D…

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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 Matter Over WiFi Smart Plug MODEL NUMBER: S61STPB REPORT NUMBER: E04A26050378F00102 ISSUE DATE: June 8, 2026 FCC ID: 2APN5-S61STPB 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.: E04A26050378F00102 Page 2 of 44 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 June 8, 2026 Initial Issue REPORT NO.: E04A26050378F00102 Page 3 of 44 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.2.3.2 FCC Part 15.247 (b)(3) Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.2 FCC Part 15.247 (a)(2) Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.5 FCC Part 15.247 (e) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247(d) FCC Part 15.205/15.209 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: 1. This report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards.. *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, RSS-247 Issue 4> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26050378F00102 Page 4 of 44 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 CONDUCTED OUTPUT POWER ........................................................... 9 5.4. TEST CHANNEL CONFIGURATION ........................................................................ 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................ 9 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 10 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 10 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 and 99% Occupied 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 .......................................................... 27 9. ANTENNA REQUIREMENT ................................................................................................ 39 10. AC POWER LINE CONDUCTED EMISSION ......................................................... 41 11. TEST DATA - APPENDIX B ................................................................................... 44 REPORT NO.: E04A26050378F00102 Page 5 of 44 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: Mat…

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ANTENNASPECIFICATION Productdescription:2.4GPCBAntenna IssueDate:2025.07.26 Note:2400-2500MHZ 1.（PRODUCTTECHNICALSPECIFICATION） ElectricalSpecifications FrequencyRange(MHz)2400-2500 InputImpendence(Ω)50 V.S.W.R≤2 Gain(dBi)-0.17 PolarizationTypeHorizontal PowerCapacity(w)2 MechanicalSpecifications AntennaLength(mm)14.4mm Radiator Cuprum ConnectTypeNC WorkingTemp(°C)-10~40 StorageTemperature(°C)-40~85 antennasize14.4mm*5.4mm Weight(g)/ 2.PRODUCTPICTURE 3.ImageofantennaS11 4.Imageofantennafieldshapetest

Setup Photographs Radiated Band edge and Spurious Emission (BLE + WIFI) Page 2 of 3 Page 3 of 3 Conducted emissions (BLE + WIFI)