2A457-RTDCCAM2Store Intelligence Camera

RT-DC-CAM 2.1 User Manual a) Camera initiation  Press the turn on/off button, camera LED light flashes indicating the camera is turned on.  Press the button again to turn camera into AP mode, and connect to camera to change its Wi-Fi settings  Wait for a few seconds to see if images captured and reflected on “Rebotics” app b) Camera routine work  Server will send capture schedules to the camera, indicating when to take a scan automatically in the retailing store. When images received by the server, it will be processed and reflected on Rebotics application. For example, to capture everyday at 8 am and 4 pm. c) Camera capabilities to deal with disruption  Change Wi-Fi password before camera capture schedule, camera should turn itself off (red light flashing) after 3 times of trial. The feature is used to save battery power and prevent camera from trying to upload image without internet connection endlessly. 3 times of trial will take the camera a few minutes to do. FCC WARNINGS This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE 1: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE 3: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

ReTech Labs, Inc. 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Date: 2023-05-15 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d) (5) (i) Filing SUBJECT: FCC Application for FCC ID: 2A457-RTDCCAM2 To Whom It May Concern: ReTech Labs, Inc. 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. Sincerely, Signatory [Zhen Qi, Manager] 芷 囚

ReTech Labs, Inc. 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Date: 2023-05-15 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d) (5) (ii) Filing SUBJECT: FCC Application for FCC ID: 2A457-RTDCCAM2 To Whom It May Concern: ReTech Labs, Inc. 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, Signatory [Zhen Qi, Manager] 芷 囚

ReTech Labs, Inc. 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Rev 1/26/2023 Date: 2023-05-15 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Ref: Attestation Statements Part 2.911(d) (7) Filing Grantee Code: 2A457 ReTech Labs, Inc. certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: Name: ReTech Labs, Inc. FRN: 0032024820 Address: 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Contact Person: Zhen Qi Tel.: 1 (619) 871-0813 Email: [email protected] Sincerely, Signatory [Zhen Qi, Manager] 芷 囚

ReTech Labs, Inc. 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Date: 2023-05-15 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 SUBJECT: FCC Application for FCC ID: 2A457-RTDCCAM2 Confidentiality Request To whom it may concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. ☒ Block Diagram ☐ Tune-Up Information ☒ Operational Description ☒ Security Information ☒ Schematics ☐ Software Defined Radio (SDR) Information ☐ Parts List 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. In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); ☐ External Photos ☐ Test Setup Photos ☐ Internal Photos ☐ User Manual ☐For 45 days, pursuant to Public Notice DA 04-1705. or ☐For 180 days pursuant to KDB 726920 D01. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Signatory [Zhen Qi, Manager] 芷 囚

ReTech Labs, Inc. 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Date: 2023-05-15 FEDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 SUBJECT: FCC Application for FCC ID: 2A457-RTDCCAM2 POWER OF ATTORNEY To Whom It May Concern: We, the undersigned, hereby authorize Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, ReTech Labs, Inc. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Signatory [Zhen Qi, Manager] 芷 囚

ReTech Labs, Inc. 9820 Willow Creek Road, Suite#110, San Diego, California 92131, United States Date: 2023-05-15 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 SUBJECT: FCC Application for FCC ID: 2A457-RTDCCAM2 To Whom It May Concern: I, the undersigned, hereby states this equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules, and will apply the Supplier's Declaration of Conformity procedure to the class B device. I understand the following FCC requirements: 1. Devices subject to the SDoC procedure are required to be tested to show compliance with the FCC technical regulations by a recognized accredited testing laboratory. The testing laboratory must be accredited by a Commission approved accreditation body or designated under the terms of a government-to-government Mutual Recognition Agreement (MRA). A listing of those accredited testing laboratories that have been recognized by the Commission is published on the FCC Webpage: https://apps.fcc.gov/oetcf/eas/reports/TestFirmSearch.cfm (Select the "accredited" option to search for FCC recognized accredited test firms.) 2. Pt 2.1077 contains the list of information that must be included in the Supplier's Declaration of Conformity, which must be supplied with each product sold. The SDoC compliance info shall be included in the User’s Manual or as a separate sheet. The info must contain the name, address, and phone number of the responsible party, which must be located within the United States. According to 2.909(b), the responsible party is either the Manufacturer or if the product is imported the Importer. Sincerely, Signatory [Zhen Qi, Manager] 芷 囚

ReferenceNo.:WTX23X04090911W001/002/003Page2of12 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cn EXHIBIT2-EUTEXTERNALPHOTOGRAPHS EUTView1 EUTView2 ReferenceNo.:WTX23X04090911W001/002/003Page3of12 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cn EUTView3 EUTView4 ReferenceNo.:WTX23X04090911W001/002/003Page4of12 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cn EUTView5 EUTView6 ReferenceNo.:WTX23X04090911W001/002/003Page5of12 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cn EUTView7 EUTView8

ReferenceNo.:WTX23X04090911W001/002/003Page1of12 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cn ANNEX EXHIBIT1-PRODUCTLABELING ProposedFCCIDLabelFormat Specifications:Thelabelshallbesecurelyaffixedtoapermanentlyattachedpartofthedevice,inalocation whereitisvisibleoreasilyaccessibletotheuser,andshallnotbereadilydetachable.Thelabelshallbe sufficientlydurabletoremainfullylegibleandintactonthedeviceinallnormalconditionsofusethroughout thedevice’sexpectedlifetime. ProposedLabelLocationonEUT FCCIDLabel Location

Reference No.: WTX23X04090911W001/002/003 Page 6 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 Solder Board-Component View 1 Reference No.: WTX23X04090911W001/002/003 Page 7 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 2 Solder Board-Component View 3 Reference No.: WTX23X04090911W001/002/003 Page 8 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 4 Solder Board-Component View 5 Reference No.: WTX23X04090911W001/002/003 Page 9 of 12 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Antenna View

1. RF Exposure Requirements 1.1 General Information Client Information Applicant: ReTech Labs, Inc. Address of applicant: 9820 Willow Creek Road, Suite#110, San Diego, CA, USA Manufacturer: ShenZhen Wasintek Technology Ltd. Address of manufacturer: 1F 211, Building B, GuoRen Building, No.5, KeJi ZhongSan Road, NanShan ShenZhen General Description of EUT: Product Name: Store Intelligence Camera Trade Name: / Model No.: RT-DC-CAM 2.1 Adding Model(s): / Rated Voltage: DC9V Battery Capacity: / FCC ID: 2A457-RTDCCAM2 Equipment Type: Mobile device Technical Characteristics of EUT: Wi-Fi (2.4GHz) Support Standards: 802.11b, 802.11g, 802.11n Frequency Range: 2412-2462MHz for 802.11b/g/n(HT20) RF Output Power: 14.39dBm (Conducted) Type of Modulation: CCK, OFDM, QPSK, BPSK, 16QAM, 64QAM Quantity of Channels: 11 for 802.11b/g/n(HT20) Channel Separation: 5MHz Type of Antenna: Integral Antenna Antenna Gain: 2.48dBi Wi-Fi (5GHz) Support Standards: 802.11a, 802.11n(HT20) , 802.11n-HT40, 802.11ac-VHT80 Frequency Range: 5470-5725MHz RF Output Power: 12.86dBm (Conducted) Type of Modulation: QPSK, 16QAM, 64QAM Type of Antenna: Integral Antenna Antenna Gain: 1.94dBi 1.2 RF Exposure Exemption According to §1.1307(b)(3) and KDB 447498 D04 Interim General RF Exposure Guidance v01, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. Option A: FCC Rule Part 1.1307 (b)(3)(i)(A):The available maximum time-averaged power is no more than 1mW, regardless of separation distance. Option B: FCC Rule Part 1.1307 (b)(3)(i)(B): The available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold P th (mW) described in the following formula. P th is given by: Option C: FCC Rule Part 1.1307 (b)(3)(i)(C): The minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. R must be at least λ/2π, where λ is the free-space operating wavelength in meters. Single RF Sources Subject to Routine Environmental Evaluation RF Source frequency (MHz) Threshold ERP (watts) 0.3-1.34 1,920 R 2 1.34-30 3,450 R 2 /f 2 30-300 3.83 R 2 300-1,500 0.0128 R 2 f 1,500-100,000 19.2R 2 For Multiple RF sources: FCC Rule Part 1.1307(b)(3)(ii): (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). (B) 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. 1.3 Calculated Result Radio Access Technology Prediction Frequency Output Power Antenna Gain Duty Cycle Tune-Up Time-Averaged Power ERP (MHz) (dBm) (dBi) (%) (dBm) (dBm) Wi-Fi (2.4GHz) 2412 14.39 2.48 100 15.00 15.33 Wi-Fi (5GHz) 5500 12.86 1.94 100 13.00 12.79 Frequency Option Min. Distance Max. Power Exposure Limit Ratio Result (MHz) (cm) (dBm) (mW) (mW) Pass/Fail 2412 C 20.00 15.33 34.12 768.00 0.04 Pass 5500 C 20.00 12.79 19.01 768.00 0.02 Pass Note: 1. Time-Averaged Power=Output Power * Duty Cycle; ERP= Time-Averaged Power+ Antenna gain-2.15dB 2. Option A, B and C refers as clause 1.2. 3. For option B, Max (time-averaged power, effective radiated power (ERP)) converts to Max. Power. For option C, ERP converts to Max. Power; 4. For option B, P th (mW) converts to Exposure Limit (mW); For option C, ERP (W) converts to Exposure Limit (mW). 5. Ratio= Tune-Up ERP (mW)/ Exposure Limit (mW) Mode for Simultaneous Multi-band Transmission: Radio Access Technology Ratio 1 Ratio 2 Simultaneous Ratio Limit Result Pass/Fail -- -- -- -- -- -- Wi-Fi (2.4GHz) and Wi-Fi (5GHz) is the use the same antenna cannot simultaneous transmission. Result: Pass

Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 20 TEST REPORT Reference No. .................... : WTX23X04090911W002 FCC ID ................................ : 2A457-RTDCCAM2 Applicant ........................... : ReTech Labs, Inc. Address.............................. : 9820 Willow Creek Road, Suite#110, San Diego, CA, USA Manufacturer ..................... : ShenZhen Wasintek Technology Ltd. Address.............................. : 1F 211, Building B, GuoRen Building, No.5, KeJi ZhongSan Road, NanShan ShenZhen Product Name ................... : Store Intelligence Camera Model No... ......................... : RT-DC-CAM 2.1 Standards .......................... : FCC Part 15E Date of Receipt sample .... : 2023-04-28 Date of Test........................ : 2023-04-28 to 2023-05-15 Date of Issue ..................... : 2023-05-15 Test Report Form No. ....... : WTX_Part 15EW Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Dashan Chen Silin Chen Reference No.: WTX23X04090911W002 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 20 TABLE OF CONTENTS 1. GENERAL INFORMATION ....................................................................................................................................4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .........................................................................4 1.2 TEST STANDARDS .................................................................................................................................................5 1.3 TEST METHODOLOGY ...........................................................................................................................................5 1.4 EUT OPERATING DURING TEST ............................................................................................................................5 1.5 TEST FACILITY ......................................................................................................................................................5 1.6 EUT SETUP AND TEST MODE ..............................................................................................................................6 1.7 TEST EQUIPMENT LIST AND DETAILS ...................................................................................................................7 2. SUMMARY OF TEST RESULTS ...........................................................................................................................8 3.DYNAMIC FREQUENCY SELECTION (DFS) ......................................................................................................9 3.1 REQUIREMENT ......................................................................................................................................................9 3.2 RADAR TEST WAVEFORMS ........................................................................................................................ 10 3.3 CALIBRATION OF RADAR WAVEFORM ................................................................................................................ 13 3.4 TEST PROCEDURE ........................................................................................................................................ 16 3.5 TEST RESULTS ............................................................................................................................................... 17 EXHIBIT 1 - TEST SETUP PHOTOGRAPHS ........................................................................................................ 20 Reference No.: WTX23X04090911W002 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 3 of 20 Report version Version No. Date of issue Description Rev.00 2023-05-15 Original / / / Reference No.: WTX23X04090911W002 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 4 of 20 1. GENERAL INFORMATION 1.1 Product Description for Equipment Under Test (EUT) General Description of EUT Product Name: Store Intelligence Camera Trade Name: / Model No.: RT-DC-CAM 2.1 Adding Model(s): / Rated Voltage: DC9V Battery Capacity: / Power Adapter: / The EUT is only support slave without radar Detection function. Note: The test data is gathered from a production sample provided by the manufacturer. Technical Characteristics of EUT Support Standards: 802.11a, 802.11n(HT20) , 802.11n-HT40, 802.11ac-VHT80 Frequency Range: 5470-5725MHz RF Output Power: 12.86dBm (Conducted) Type of Modulation: QPSK, 16QAM, 64QAM Type of Antenna: Integral Antenna Antenna Gain: 1.94dBi Note: The Antenna Gain is provided by the customer and can affect the validity of results. Reference No.: WTX23X04090911W002 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 5 of 20 1.2 Test Standards The tests were performed according to following standards: FCC Rules Part 15.407: General technical requirements. ANSI C63.10-2013: American National Standard for Testing Unlicensed Wireless Devices. KDB905462 D02: Compliance Measurement Procedures for Unlicensed-National Information Infrastructure Devices Operating in the 5250-5350MHz And 5470-5725MHz Bands Incorporating Dynamic Frequency Selection. KDB905462 D03:U-Nii Client Devices Without Radar Detection Capability. Maintenance of compliance is the responsibility of the manufacturer. Any modification of the product, which result in lowering the emission, should…

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Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 71 TEST REPORT Reference No. .................... : WTX23X04090911W001 FCC ID ................................ : 2A457-RTDCCAM2 Applicant ........................... : ReTech Labs, Inc. Address.............................. : 9820 Willow Creek Road, Suite#110, San Diego, CA, USA Manufacturer ..................... : ShenZhen Wasintek Technology Ltd. Address.............................. : 1F 211, Building B, GuoRen Building, No.5, KeJi ZhongSan Road, NanShan ShenZhen Product Name ................... : Store Intelligence Camera Model No... ......................... : RT-DC-CAM 2.1 Standards .......................... : FCC Part 15.407 Date of Receipt sample .... : 2023-04-28 Date of Test........................ : 2023-04-28 to 2023-05-17 Date of Issue ..................... : 2023-05-17 Test Report Form No. ....... : WTX_Part 15_407W Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Dashan Chen Silin Chen Reference No.: WTX23X04090911W001 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 71 TABLE OF CONTENTS 1. GENERAL INFORMATION ....................................................................................................................................5 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .........................................................................5 1.2 TEST STANDARDS .................................................................................................................................................6 1.3 TEST METHODOLOGY ...........................................................................................................................................6 1.4 TABLE FOR PARAMETERS OF TEST SOFTWARE SETTING .....................................................................................6 1.5 EUT OPERATING DURING TEST ............................................................................................................................7 1.6 TEST FACILITY ......................................................................................................................................................7 1.7 EUT SETUP AND TEST MODE ..............................................................................................................................8 1.8 MEASUREMENT UNCERTAINTY .............................................................................................................................9 1.9 TEST EQUIPMENT LIST AND DETAILS ................................................................................................................. 10 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 13 3. ANTENNA REQUIREMENT ................................................................................................................................. 14 3.1 STANDARD APPLICABLE ..................................................................................................................................... 14 3.2 EVALUATION INFORMATION ................................................................................................................................ 14 4. AUTOMATICALLY DISCONTINUE TRANSMISSION..................................................................................... 15 4.1 STANDARD APPLICABLE ..................................................................................................................................... 15 4.2 SUMMARY OF TEST RESULTS ............................................................................................................................. 15 5. POWER SPECTRAL DENSITY ........................................................................................................................... 16 5.1 STANDARD APPLICABLE ..................................................................................................................................... 16 5.2 TEST PROCEDURE .............................................................................................................................................. 16 5.3 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 17 6. EMISSION BANDWIDTH AND OCCUPIED BANDWIDTH ............................................................................ 18 6.1 STANDARD APPLICABLE ..................................................................................................................................... 18 6.2 TEST PROCEDURE .............................................................................................................................................. 18 6.3 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 20 7. MAXIMUM CONDUCTED OUTPUT POWER ................................................................................................... 21 7.1 STANDARD APPLICABLE ..................................................................................................................................... 21 7.2 TEST PROCEDURE ..............................................................................................................................................…

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ShenzhenTongchenginfiniteTechnologyCo.,Ltd SPECIFICATIONFORAPPROVAL supplier： ShenzhenTongchengInfiniteTechnologyCo.,Ltd Supplierspecifications:2.4/5.8GWIFIantenna Suppliermodel:TCNZWJ2458G-1 CustomerName：ShenzhenHuaxingVideoTechnologyCo.LTD CustomerItemNo：RT001 VersionNo：RT001antennaV1.0 Sampledeliverydate： March13,2023 Acknow ledgme nt column supplier RFEngineertoexamineapproval file YanPeihao Zhong Anmin FengJuan  Zou Fanglan customer Certified Engineer to examine approval file ShenzhenTongchenginfiniteTechnologyCo.,Ltd Contents ItemDescription 1...........................................................Testinstrumentandenvironment 2................................................................................Antennaperformance 3...................................................................................building-outcircuit 4............................................................AntennapassivedataS11 ， ReturnLoss ， Smith 5..................................................................................Gainofefficiency 6.............................................................................3Dantennaorientationdiagram 7...........................................................................2Dantennaorientationdiagram 8.............................................................................Antennadrawing ShenzhenTongchenginfiniteTechnologyCo.,Ltd 1.Testinstrumentandenvironment:CTIA743darkroom,8960/5515c,themobilephone isplacedbacktotheturntable4metersawayfromthestandardhornantenna: 2.Antennaperformance: serialnumber Workindex Workingparameters 1 workingfrequency 2400-2500MHZ/5120-5960MHZ 2 Standingwaveratio ≤ 2.0 3 Returnloss ≤-8dBMax 4 Antennagain Peakgain2.4G2485MHZ:2.62dBi Peakgain5G5234MHZ:2.94dBi 5 Antennaefficiency 2.4G:≧50% 5.8G:≧50% 6Polarization direction Vertical/horizontal 7Interfacetype Three-generationwireterminal 8 Antennasize 83MM*5.0MM 9 Placeofproduction Room403,JinfulaiComplexBuilding, No.49-1DabaoRoad,DalangCommunity,Xin 'anStreet,Bao'anDistrict,Shenzhen ShenzhenTongchenginfiniteTechnologyCo.,Ltd 3.building-outcircuit: Nomatchingcircuitwasadded。 4.AntennapassivedataS11，ReturnLoss，Smith： ShenzhenTongchenginfiniteTechnologyCo.,Ltd 5.Gainofefficiency: ShenzhenTongchenginfiniteTechnologyCo.,Ltd 6.3Dantennaorientationdiagram: 7.2Dantennaorientationdiagram: ShenzhenTongchenginfiniteTechnologyCo.,Ltd 8.Antennadrawing：

ReferenceNo.:WTX23X04090911W001/002/003Page10of12 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cn EXHIBIT4-TESTSETUPPHOTOGRAPHS ConductedEmissionTest Setup RadiationEmissionTest Setup(Below30MHz) ReferenceNo.:WTX23X04090…

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