2BFI9-DM1Video Doorbell

Section Company n Address: 20 Shenzhen, Product N a FCC ID: 2B Model(s): D 2.911(d)(5 We, [Shen z which autho  Pro  Ide n Yours sinc e Name: Lon Title: Sales Company n Signature: NOTE 1 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s Shen 2.911(d) name: Shen 01,Building China ame: Video BFI9-DM1 DM1, DM2, 5)(i) Equip zhen Zhong orization is hibited fro m ntified as an erely, g Zhu manage name: Shen ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t nzhen Z )(5)(i) Ce nzhen Zhon B,Chunen g Doorbell DM3, DM4 ment Type gxin Shidai T sought thro m receiving n equipmen nzhen Zhon of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the Zhongxin ertificatio gxin Shidai ghui,No.11Q e Technology ough certific an equipme nt type in the gxin Shida i and Services C list SearchResul t 63 published o nts/2023/02/06 n Shidai on – Equi Te c h n o l o gy Qinghuame y Co.,Ltd.] (“ cation is not ent authoriz e “Covered i Technolog Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ Techno 2. ipment T y Co.,Ltd. i Road, Gu a “the applica t: zation pursu List” NOTE 1 y Co.,Ltd. ection 2 of Th witch=P&id=32 /protecting-ag logy Co 911 (d)(5)(i) Eq Type anhu Street ant”) certify t uant to § 2.9 e Secure Netw 5672 ainst-national- .,Ltd. quipment Type A t, Longhua that the equ 903; of the F Date: De works Act, ava -security-threa Attestation v1.2 District, uipment for FCC rules. ec. 09, 2025 ailable at ats-to-the-com 2 5 m

Section Company n Address: 20 Shenzhen, Product N a FCC ID: 2B Model(s): D 2.911(d)(5 ) We, [Shenz the filing of establishe d equipment. Yours sinc e Name: Long Title: Sale s Company n Signature: NOTE 1 Delete option NOTE 2 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal Re https://www.fe munications-s Shen 2.911(d) name: Shen 01,Building China ame: Video BFI9-DM1 DM1, DM2, )(ii) Applica zhen Zhong fthe applica d pursuant t erely, g Zhu s manage name: Shen not applicable ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t nzhen Z )(5)(ii) Ce nzhen Zhon B,Chunen g Doorbell DM3, DM4 ant filing gxin Shidai T ation, the ap to §1.50002 nzhen Zhon e to this applic of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the Zhongxin ertificatio gxin Shidai ghui,No.11Q Technology pplicant is n 2 of this cha gxin Shida i cation. and Services C list SearchResult 63 published o nts/2023/02/06 n Shidai on – App Te c h n o l o gy Qinghuamei y Co.,Ltd.] (“ not identifie apter, as an i Technolog Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ Techno plicant (C y Co.,Ltd. i Road, Gua “the applica ed NOTE 1 on t entity prod y Co.,Ltd. ection 2 of Th witch=P&id=32 /protecting-ag logy Co 2.911 (d)(5 Covered L anhu Street ant”) certify t the “Covere ucing cover e Secure Netw 5672 ainst-national - .,Ltd. 5)(ii) Applicant A List ) t, Longhua that, as of t ed List” NOTE 2 red commu Date: D e works Act, ava -security-threa Attestation v1.3 District, the date of 2 , nications ec. 09, 2025 ailable at ats-to-the-com 3 5 m

Co m Ad d Dist Pr o Mo d Pr o We act We an d issu our Sig Na m Title Com Shenz mpany: She dress: 201, trict, Shenz oduct Name del Numbe oduct Desc authorize M on our beha declare tha d certificatio ues concern behalf shal nature: me: e: mpany: zhen Z enzhen Zho Building B, hen, China e: Video Do er(s): DM1, ription: Vi d MiCOM Lab alf on all ma at MiCOM L n of equipm ning the app ll have the s Long Zh u Sales man Shenzhen Zhongx Agen ongxin Shid Chunenghu oorbell DM2, DM3 deo Doorbe bs Inc., 575 atters conce Labs Inc. is ment to the r proval applic same effect u nage n Zhongxin xin Shid nt Auth dai Technolo ui,No.11Qin , DM4 ll Boulder C o erning the c allowed to f regulatory a cation. Any t as acts of n Shidai Te dai Tec horizat ogy Co.,Ltd ghuamei R o ourt, Pleasa certification forward all i agencies as and all acts our own. chnology C chnolog ion . oad, Guanh anton, Califo of above na information s required a s carried ou Date: Co.,Ltd. gy Co. hu Street, L ornia 94566 amed equip related to t nd to discu ut by MiCOM Dec. 09, 2 ,Ltd. onghua 6, USA, to pment. the approva ss any M Labs on 025 al

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To W We, Nu m only Ple a Sig Na m Title Shenz Whom It May Shenzhen Z mber: DM1, D y with produc ase contact m nature: me: L e: S zhen Z M o y Concern, Zhongxin Sh DM2, DM3, D ct model nam me if you hav Long Zhu Sales mana hongx odel Di idai Technolo DM4; All mod med different. ve any quest age in Shid fferenc ogy Co.,Ltd. del's the func . Test sample tion. dai Tec ce Dec (Video Door ction, softwar e model: DM chnolog claratio rbell); Trade re and electr M1. Date: gy Co. on Mark: N/A; M ric circuit are Dec. 09, 2 ,Ltd. Model e the same, 025

FCC ID LABEL: Ca. 40mm x 25mm Label Location FCC ID: 2BFI9-DM1

MPE ESTIMATION FCC ID: 2BFI9-DM1 1, According to §1.1310, Limit for General Population/ Uncontrolled Exposures Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/1500 30 1.5GHz---100GHz 1.0 30 Note: F= Frequency in MHz 433 TX: EIRP(dBm)=86.49(dBuV/m)-95.2=-8.71(dBm) 2, Estimation Result Frequency (MHz) Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (numerical) MPE (mW/cm²) Limit (mW/cm²) Ratios 2.4GWiFi 2437 14.89 14±1(15) 31.623 3.54 2.26 0.01422 1.0 0.01422 5.8GWiFi 5825 10.76 10±1(11) 12.589 3.99 2.51 0.00628 1.0 0.00628 433 TX 433.9054 -8.71 -9±1(-8) 0.158 2 1.58 0.00005 0.2893 0.00017 Note: Note: The estimation distance is 20cm Note: PK Output power= conducted power in mW. G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna in cm Conducted power see the test report HK2511136156-1E/2E/3E, 2.4GWiFi antenna gain=3.54dBi, 5.8GWiFi antenna gain=3.99dBi, 433 antenna gain=2dBi. Simultaneously MPE Ratios: 2.4GWiFi + 433 TX = 0.01422 + 0.00017 = 0.01439 2.4GWiFi and 5GWiFi cannot be transmitted at the same time When the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.01439 which is< 1.0, RF Exposure testing is not required. -------The End-------

ConfidentialityrequirementsofShenzhenGuandetongElectronicCo.,Ltd..Thecompanyhasproprietarytechnologytoprovidethe information,whichshouldbestrictlyconfidential,itshallnotbedisclosedtoanypersonorcompanywithoutthepriorwritten consentofShenzhenGuandetongElectronicCo.,Ltd.. Address:3/F,TowerD,HuanguanNanmaoyuanIndustrialPark,GuanhuStreet,LonghuaDistrict,Shenzhen.Tel:0755-88298396fax: 0755-89733896 http://www.szgdtrf.com catalogue Cover.......................................................................................................1 catalogue......................................................................................................2 一、Productpictures......................................................................................3 二、Productparameters.............................................................................3 三、S11(VSWR、Return、Smith).........................................................4 四、Structuraldrawings......................................................................4 五、Antennagainandefficiency ............................................5 六、2D&3Dimages...........................................................................5-6 七、 Environmentalperformancetest.........................................................6 Confidentialityrequirementsof ShenzhenGuande tongElectronicCo. , Ltd.. The companyhas proprietarytechnologyto providethe information,whichshouldbe strictlyconfidential,it shallnot be disclosedto any personor companywithoutthe priorwritten consentof ShenzhenGuande tongElectronicCo. , Ltd.. Address:3/F,TowerD, HuanguanNanmaoyuanIndustrialPark,GuanhuStreet,LonghuaDistrict,Shenzhen.Tel:0755-88298396fax: 0755-89733896 http://www.szgdtrf.com 一、Productpictures 二、Productparameters Producttestingparameters Productname FPCAntenna (ModelType) GDT-DX-70 (ElectricalSpecifications) (FrenquencyRange) 2400-2500MHz 5150-5850MHZ （Polarization） perpendicular (Impedance) 50ΩRadiationQXCOMM （ VSWR ） ≦2.0 (Power)50W (Gain)(Bandwidth100M (MechanicalSpecifications) (Dimensions) 27*13±1mm (ChassisColor) Black (Connector) IPEX (CableLength) 70±3MM (ChassisMaterial) FPC Wirecolor 1.13Black (WorkingTemperature) -4 0°C-+85°C (LimitTemperature) -4 0°C-+85°C 2400-2500MHz:3.54dBi 5150-5850MHZ: 3.99dBi ConfidentialityrequirementsofShenzhenGuandetongElectronicCo.,Ltd..Thecompanyhasproprietarytechnologytoprovidethe information,whichshouldbestrictlyconfidential,itshallnotbedisclosedtoanypersonorcompanywithoutthepriorwritten consentofShenzhenGuandetongElectronicCo.,Ltd.. Address:3/F,TowerD,HuanguanNanmaoyuanIndustrialPark,GuanhuStreet,LonghuaDistrict,Shenzhen.Tel:0755-88298396fax: 0755-89733896 http://www.szgdtrf.com 三、S11(VSWR、Return、Smith) 四 、Structuraldrawings ConfidentialityrequirementsofShenzhenGuandetongElectronicCo.,Ltd..Thecompanyhasproprietarytechnologytoprovidethe information,whichshouldbestrictlyconfidential,itshallnotbedisclosedtoanypersonorcompanywithoutthepriorwritten consentofShenzhenGuandetongElectronicCo.,Ltd.. Address:3/F,TowerD,HuanguanNanmaoyuanIndustrialPark,GuanhuStreet,LonghuaDistrict,Shenzhen.Tel:0755-88298396fax: 0755-89733896 http://www.szgdtrf.com 五、Antennagainandefficiency 六、2D&3Dimages ConfidentialityrequirementsofShenzhenGuandetongElectronicCo.,Ltd..Thecompanyhasproprietarytechnologytoprovidethe information,whichshouldbestrictlyconfidential,itshallnotbedisclosedtoanypersonorcompanywithoutthepriorwritten consentofShenzhenGuandetongElectronicCo.,Ltd.. Address:3/F,TowerD,HuanguanNanmaoyuanIndustrialPark,GuanhuStreet,LonghuaDistrict,Shenzhen.Tel:0755-88298396fax: 0755-89733896 http://www.szgdtrf.com 七、Environmentalperformancetest projectProjecttestconditions Specificat ions Storageenvironment Thetesttemperature,humidityandairpressureare asfollowswhenthereisnospecificcondition: 1.Thetemperatureis-30°C~+80°C 2.Relativehumidity:45%-85% 3.Theairpressureis86kpa-106kpa Normalelectricaland mechanicalperformance Highandlow temperaturetest 5cyclesbetween70°Cand40°C,thenundernormal conditions1-2H,checktheappearancequality. Thesizeshallmeetthe requirementsand Mechanicaland electricalperformance Constantdampheat resistancetest Relativehumidity:95±3%,testtemperature:40°C.After lastingfor2h, Theelectricalperformanceshallbemeasuredwithin5minutesafter thetestobjectistakenout,andthetestobjectshallbewithin thenormalrange Part1-2H,checktheappearancequality Thesizeshallmeetthe requirementsand Mechanicaland electricalperformance vibrationtest Vibrationfrequencyrange:10-55HZ,displacementamplitude: 0.35MM,accelerationamplitude: 50.0M/s,frequencysweepcycles:30times Normalelectricaland mechanicalperformance Droptest Freefallfor3timesinthedirectionofmutuallyperpendicular axesataheightof1M Normalelectricaland mechanicalperformance

Page 1 of 72 Report No.: HK2511136156-1E FCC Test Report Test Report On Behalf of Shenzhen Zhongxin Shidai Technology Co.,Ltd. For Video Doorbell Model No.: DM1, DM2, DM3, DM4 FCC ID: 2BFI9-DM1 Prepared For: Shenzhen Zhongxin Shidai Technology Co.,Ltd. 201,Building B,Chunenghui,No.11Qinghuamei Road, Guanhu Street, Longhua District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Nov. 13, 2025 ~ Dec. 01, 2025 Date of Report: Dec. 01, 2025 Report Number: HK2511136156-1E Page 2 of 72 Report No.: HK2511136156-1E Test Result Certification Applicant’s Name .................. : Shenzhen Zhongxin Shidai Technology Co.,Ltd. Address .................................. : 201,Building B,Chunenghui,No.11Qinghuamei Road, Guanhu Street, Longhua District, Shenzhen, China Manufacturer's Name ........... : Shenzhen Zhongxin Shidai Technology Co.,Ltd. Address .................................. : 201,Building B,Chunenghui,No.11Qinghuamei Road, Guanhu Street, Longhua District, Shenzhen, China Product Description Trade Mark ............................. : N/A Product Name ......................... : Video Doorbell Model and/or Type Reference : DM1, DM2, DM3, DM4 Standards ............................... : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2020 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................................ : Date (s) of Performance of Tests ............ : Nov. 13, 2025 ~ Dec. 01, 2025 Date of Issue ........................................... : Dec. 01, 2025 Test Result ............................................... : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 72 Report No.: HK2511136156-1E Table of Contents 1. Summary ................................................................................................... 5 1.1 Test Procedures and Results ........................................................................................................... 5 1.2 Information of the Test Laboratory ................................................................................................. 5 1.3 Measurement Uncertainty ................................................................................................................ 6 2. EUT Description ........................................................................................ 7 2.1 General Description of EUT ............................................................................................................. 7 2.2 Carrier Frequency of Channels ........................................................................................................ 8 2.3 Operation of EUT during Testing ..................................................................................................... 8 2.4 Description of Test Setup ................................................................................................................. 9 2.5 Description of Support Units ......................................................................................................... 10 3. General Information ................................................................................ 11 3.1 Test Environment and Mode .......................................................................................................... 11 4. Test Results and Measurement Data .................................................... 13 4.1 AC Conducted Emission ................................................................................................................ 13 4.2 Maximum Peak Conducted Output Power .................................................................................... 17 4.3 Emission Bandwidth ....................................................................................................................... 20 4.4 Power Spectral Density .................................................................................................................. 26 4.5 Conducted Band Edge and Spurious Emission Measurement .................................................. 33 4.6 Radiated Spurious Emission Measurement ................................................................................. 43 4.7 Antenna Requirement ..................................................................................................................... 69 5. Test Setup Photos of the EUT ............................................................... 70 6. Photos of the EUT ................................................................................... 72 Page 4 of 72 Report No.: HK2511136156-1E ** Modified History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Dec. 01, 2025 Jason Zhou Page 5 of 72 Report No.: HK2511136156-1E 1. Summary 1.1 Test Procedures and Results Requirement CFR 47 Section Result Antenna Requirement §15.203/§15.247(b)(4) PASS AC Power Line Conducted Emission §15.207 PASS Conducted Peak Output Power §15.247(b)(3) PASS 6dB Emission Bandwidth §15.247(a)(2) PASS Power Spectral Density §15.247(e) PASS Band Edge §15.247(d) PASS Spurious Emission §15.205/§15.209 PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. 1.2 Information of the Test Laboratory Shenzhen HUAK Testing…

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Page 33 of 72 Report No.: HK2511136156-1E 4.5 Conducted Band Edge and Spurious Emission Measurement Test Specification Test Requirement: FCC Part15 C Section 15.247 (d) Test Method: KDB 558074 D01 15.247 Meas Guidance v05r02 Limit: In any 100 kHz bandwidth outside of the authorized frequency band, the emissions which fall in the non-restricted bands shall be attenuated at least 20 dB / 30dB relative to the maximum PSD level in 100 kHz by RF conducted measurement and radiated emissions which fall in the restricted bands, as defined in Section 15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a). Test Setup: Test Mode: Transmitting mode with modulation Test Procedure: 1. The testing follows FCC KDB Publication 558074 D01 15.247 Meas Guidance v05r02. 2. The RF output of EUT was connected to the spectrum analyzer by RF cable. The path loss was compensated to the results for each measurement. 3. Set to the maximum power setting and enable the EUT transmit continuously. 4. Set RBW = 100 kHz, VBW=300 kHz, Peak Detector. Unwanted Emissions measured in any 100 kHz bandwidth outside of the authorized frequency band shall be attenuated by at least 20 dB relative to the maximum in-band peak PSD level in 100 kHz when maximum peak conducted output power procedure is used. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, the attenuation required under this paragraph shall be 30 dB instead of 20 dB per 15.247(d). 5. Measure and record the results in the test report. 6. The RF fundamental frequency should be excluded against the limit line in the operating frequency band. Test Result: PASS Page 34 of 72 Report No.: HK2511136156-1E Test Instruments RF Test Room Equipment Manufacturer Model Serial Number Calibration Date Calibration Due Spectrum analyzer Agilent N9020A HKE-025 Feb. 19, 2025 Feb. 18, 2026 Spectrum analyzer Agilent N9020A HKE-117 Feb. 19, 2025 Feb. 18, 2026 High pass filter unit Tonscend JS0806-FHKE-055 Feb. 19, 2025 Feb. 18, 2026 RF Cable (9KHz-26.5GHz) Tonscend 170660 N/A Feb. 19, 2025 Feb. 18, 2026 RF automatic control unit Tonscend JS0806-2HKE-060 Feb. 19, 2025 Feb. 18, 2026 RF Test software Tonscend JS1120-3 Version 3.5.39 HKE-083 N/A N/A Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI). Page 35 of 72 Report No.: HK2511136156-1E Test Data 802.11b Modulation Lowest Channel Highest Channel Band Edge Band Edge Spurious Emission Spurious Emission Page 36 of 72 Report No.: HK2511136156-1E Middle Channel Spurious Emission Page 37 of 72 Report No.: HK2511136156-1E 802.11g Modulation Lowest Channel Highest Channel Band Edge Band Edge Spurious Emission Spurious Emission Page 38 of 72 Report No.: HK2511136156-1E Middle Channel Spurious Emission Page 39 of 72 Report No.: HK2511136156-1E 802.11n (HT20) Modulation Lowest Channel Highest Channel Band Edge Band Edge Spurious Emission Spurious Emission Page 40 of 72 Report No.: HK2511136156-1E Middle Channel Spurious Emission Page 41 of 72 Report No.: HK2511136156-1E 802.11n (HT40) Modulation Lowest Channel Highest Channel Band Edge Band Edge Spurious Emission Spurious Emission Page 42 of 72 Report No.: HK2511136156-1E Middle Channel Spurious Emission Page 43 of 72 Report No.: HK2511136156-1E 4.6 Radiated Spurious Emission Measurement Test Specification Test Requirement: FCC Part15 C Section 15.209 Test Method: ANSI C63.10: 2020 Frequency Range: 9 kHz to 25 GHz Measurement Distance: 3 m Antenna Polarization: Horizontal & Vertical Operation Mode: Transmitting mode with modulation Receiver Setup: Frequency Detector RBW VBW Remark 9kHz- 150kHzQuasi-peak200Hz 1kHz Quasi-peak Value 150kHz- 30MHz Quasi-peak9kHz 30kHz Quasi-peak Value 30MHz-1GHzQuasi-peak120KHz300KHz Quasi-peak Value Above 1GHz Peak 1MHz 3MHz Peak Value Peak 1MHz 10Hz Average Value Limit: Frequency Field Strength (microvolts/meter) Measurement Distance (meters) 0.009-0.490 2400/F(KHz) 300 0.490-1.705 24000/F(KHz) 30 1.705-30 30 30 30-88 100 3 88-216 150 3 216-960 200 3 Above 960 500 3 Frequency Field Strength (microvolts/meter) Measurement Distance (meters) Detector Above 1GHz 500 3 Average 5000 3 Peak Test Setup: For radiated emissions below 30MHz Page 44 of 72 Report No.: HK2511136156-1E 30MHz to 1GHz Above 1GHz Test Procedure: 1. For the radiated emission test below 1GHz: The EUT was placed on a turntable with 0.8 meter above ground. The EUT was set 3 meters from the interference receiving antenna, which was mounted on the top of a variable height antenna tower. The EUT was arranged to its worst case and then tune the antenna tower (from 1 m to 4 m) and turntable (from 0 degree to 360 degrees) to find the maximum reading. A pre-amp and a high PASS filter are used for the test in order to get better signal level. 2. For the radiated emission test above 1GHz: Place the measurement antenna on a turntable with 1.5 meter above ground, which is away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. Page 45 of 72 Report No.: HK2511136156-1E The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 3. Corrected Reading: Antenna Factor + Cable Loss + Read Level - Preamp Factor = Level 4. For measurement below 1GHz, If the emission level of the EUT measured by the peak detector is 3 dB lower than the applicable l…

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Test Model: DM1 Radiated Emission AC Conducted Emission RF Conducted Emission WIFI: 433 TX: