2APN5-SNZB04PR1Zigbee Door/Window Sensor

Shenzhen Sonoff Technologies Co., Ltd. 2026-05-25 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- SNZB04PR1) [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. 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China Shenzhen Sonoff Technologies Co., Ltd. 2026-05-25 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- SNZB04PR1) [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. 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China

AttestationStatements (2026-05-25) TO:FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046,USA RE:AttestationStatementsPart2.911(d)(7)requestfor(FCCID:2APN5-SNZB04PR1) (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. 2026-05-25 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. 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China

Shenzhen Sonoff Technologies Co., Ltd. 2026-05-25 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (EUT Name: Zigbee Door/Window Sensor /Model: SNZB-04PR1/FCC ID: 2APN5-SNZB04PR1) 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 materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Stan Li Manager Shenzhen Sonoff Technologies Co., Ltd. 3F & 6F, Bldg A, No. 663, Bulong Rd, Shenzhen, Guangdong, China

External Photographs View of EUT-1 View of EUT-2 Page 2 of 4 View of EUT-3 View of EUT-4 Page 3 of 4 View of EUT-5 View of EUT-6 Page 4 of 4 View of EUT-7

颜强 2025.11.07 SNZB-04PR1底壳 1 6 . 2 0 m m 9.04 mm

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

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-SNZB04PR1 EUT Specification EUT Zigbee Door/Window 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: 6.7dBm Antenna gain (Max) -1.06dBi Evaluation applied MPE Evaluation SAR Evaluation Page 2 of 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: P d =(P out *G)\(4*pi*R 2 ) 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. Page 3 of 3 Measurement Result Zigbee: Mode Max Measured Power (dBm) Tune up tolerance (dBm) Max tune up conducted power(dBm) Output power (mW) Ant. Gain (dBi) Ant. Gain (numeric) Power density at 20cm (mW/ cm 2 ) Power density Limits (mW/ cm 2 ) Zigbee 6.7 6±1 7 5.012 -1.06 0.783 0.00078 1 Signature: Alan He Date: 2026-5-22

Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT Zigbee 2405 Ant1 58.5 2.33 2.61 NVNT Zigbee 2440 Ant1 58.43 2.33 2.61 NVNT Zigbee 2480 Ant1 58.5 2.33 2.61 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) Limit Conducted(dBm) Verdict NVNT Zigbee 2405 Ant1 6.7 30 Pass NVNT Zigbee 2440 Ant1 6.66 30 Pass NVNT Zigbee 2480 Ant1 6.62 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 1.702 0.5 Pass NVNT Zigbee 2440 Ant1 1.619 0.5 Pass NVNT Zigbee 2480 Ant1 1.535 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 2.151 NVNT Zigbee 2440 Ant1 2.135 NVNT Zigbee 2480 Ant1 2.154 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 -7.64 8 Pass NVNT Zigbee 2440 Ant1 -7.68 8 Pass NVNT Zigbee 2480 Ant1 -7.74 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 -53.59 -20 Pass NVNT Zigbee 2480 Ant1 -52.62 -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 -56.51 -20 Pass NVNT Zigbee 2440 Ant1 -40.01 -20 Pass NVNT Zigbee 2480 Ant1 -51.86 -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(DTS) TEST REPORT For Zigbee Door/Window Sensor MODEL NUMBER: SNZB-04PR1 REPORT NUMBER: E04A26040289F00501 ISSUE DATE: May 22, 2026 FCC ID: 2APN5-SNZB04PR1 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, 203-2 10, 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.: E04A26040289F00501 Page 2 of 36 TRF No.: 04-E 001- 0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 May 22, 2026 Initial Issue REPORT NO.: E04A26040289F00501 Page 3 of 36 TRF No.: 04-E 001- 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: 1. N/A: In this whole report not applicable. *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(DTS)> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26040289F00501 Page 4 of 36 TRF No.: 04-E 001- 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 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 .................................................................................................... 9 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 10 7. ANTENNA PORT TEST RESULTS ..................................................................................... 12 7.1. Conducted Output Power ........................................................................................ 12 7.2. 6dB Bandwidth and 99% Occupied Bandwidth ....................................................... 13 7.3. Power Spectral Density ........................................................................................... 15 7.4. Conducted Band edge and spurious emission ........................................................ 16 7.5. Duty Cycle .............................................................................................................. 18 8. RADIATED TEST RESULTS ............................................................................................... 19 8.1. Radiated Band edge and Spurious Emission .......................................................... 24 9. ANTENNA REQUIREMENT ................................................................................................ 36 REPORT NO.: E04A26040289F00501 Page 5 of 36 TRF No.: 04-E 001- 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 Door/Window Sensor Model: SNZB-04PR1 Series Model: / Brand: SONOFF Sample Received Date: April 9, 2026 Sample Status: Normal Sample ID: A26040289 003 Date of Tested: April 9, 2026 to April 28, 2026 APPLICABLE STANDARDS STANDARD TEST RESULTS CFR 47 FCC PART 15 SUBPART C(DTS) Pass Prepared By: Checked By: Jok Yang Alan He Project Engineer Laboratory Manager Approved By: Alan He Laboratory Manager REPORT NO.: E04A26040289F00501 Page 6 of 36 TRF No.: 04-E 001- 0B Global Testing , Great Quality. 2. TEST METHODOLOGY All te…

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ANTENNA SPECIFICATION Product description: 2.4G Ceramic Antenna Uni Link’s part number: Issue Date: 2026.03.27 Note: 2400-2500MHZ 1 、（PRODUCT TECHNICAL SPECIFICATION） Electrical Specifications Frequency Range (MHz) 2400-2500 Input Impendence (Ω) 50 V.S.W.R ≤2 Gain(dBi) -0.79 Polarization Type Horizontal Power Capacity (w) 2 Mechanical Specifications Antenna Length (mm) NC Radiator Cuprum Connect Type NC Working Temp( °C) -10~60 Storage Temperature(°C) -20~85 antenna size 3.10*1.55*0.55m Weight(g) / 2、PRODUCT PICTURE 3 、PRODUCT SPECIFICATION CHART 4、Image of antenna field shape test

Setup Photographs Radiated Band edge and Spurious Emission Page 2 of 2