2BT6E-KTF2AFAN SYSTEM

GuangZhouYueYiXinXiKeJiYouXianGongSi Code 00018768 Ed. 1 Item 1. The device is able to install software/program installation? ☐ Yes, go to Item 2. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky cybersecurity or anti-virus software. Device FAN SYSTEM Company name GuangZhouYueYiXinXiKeJiYouXianGongSi Grantee code 2BT6E FCC ID 2BT6E-KTF2A FRN 0037846466 Contact name Clarice Xie Address BaiYunQuTongDeJieXiChaLu31HaoZhiSi E207- 4DanYuan, Guangzhou City, Guangdong Province, 510407, China Telephone number 13423772540 E-mail [email protected] Chipset/module information WS8300 Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 Item 2. Technical Requirements for Kaspersky Cybersecurity Software: # General Requirements (For all Devices) Yes / No or N/A Comments 1 Internet connection for activation and updates (For all Operating Systems) N/A # General Requirements (For Windows Devices) Yes / No or N/A Comments 1 Storage: 1500 MB free space on the hard drive N/A 2 Operating System: Microsoft Windows 8, 8.1, 10 & 11 Home / Pro / Enterprise Microsoft Windows 7 Starter / Home Basic & Premium / Professional / Ultimate SP1 or higher N/A 3 Processor: 1 GHz or higher (x86 or x64) N/A 4 Memory (RAM)1 GB (32-bit) or 2 GB (64-bit) N/A 5 Screen Resolution: Minimum resolution of 1024 x 768 N/A # General Requirements (For macOS devices) Yes / No or N/A Comments 1 Operating System macOS® 13 – 14 N/A 2 Memory (RAM)4 GB N/A 3 Storage: 3455 MB free space on the hard drive N/A # General Requirements (For Android Devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: Android™ 10 – 14 N/A 3 Screen Resolution: Minimum resolution of 320 x 480 N/A # General Requirements (for iOS devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 3 2 Operating System: iOS® 17 N/A # General Requirements (For Linux system) Yes / No or N/A Comments 1 Hard drive: 1 GB of free space N/A 2 CPU: Intel Pentium 1 GHz or higher N/A 3 RAM: 1 GB N/A 4 Minimum software requirements: AlmaLinux OS 8 or later; AlterOS 7.5 or later; Astra Linux Common Edition 2.12 or later; CentOS 6.7 or later; Debian GNU/Linux 10.0 or later; EulerOS 2.0 or later; Oracle Linux 7.3 or later ; Red Hat Enterprise Linux 6.7 or later ; Rocky Linux 8.5 or later ; SUSE Linux Enterprise Server 12.5 or later; Ubuntu 12.04 or later ; Uncom OS Home / Business / Education / Enterprise 2.2 or later; ALT Linux Workstaton / Workstation K / Server / Education 8 or later; ROSA Linux Workstation / Server 12 or later ; RED OS 7.3 and later ; N/A After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. 4 ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software Item 3. Connectivity Capabilities: # Physical Interface Purpose Justification 1 1 # Wireless Interface Purpose Justification 1 1 After the review of this items, the device: ☒ Cannot support installation of any cybersecurity or anti-virus software on the covered list. ☐ Potentially can operate with any cybersecurity or anti-virus software on the covered list – additional third- party proof is provided to demonstrate compliance with requirements as of 2.911(d)5(i),(ii) – “Proof of Compliance with Covered List Software Requirements” of this document applies Signature: Name: Clarice Xie Date: 2026-02-25 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: ISSYZONE TX INC. FRN: 0036843886 Contact Name: Clarice Xie Address: 10207 S Sam Houston Pkwy W #130, Houston, TX 77071 United States Telephone No: (281) 208-7948 Email: [email protected] Applicant: Company name: GuangZhouYueYiXinXiKeJiYouXianGongSi Product Description: FAN SYSTEM FRN: 0037846466 Grantee Code: 2BT6E FCC ID: 2BT6E-KTF2A Contact Name: Clarice Xie Address: BaiYunQuTongDeJieXiChaLu31HaoZhiSi E207-4DanYuan, Guangzhou City, Guangdong Province, 510407, China Telephone No: 13423772540 Email: [email protected] [GuangZhouYueYiXinXiKeJiYouXianGongSi] certifies that, as of the date of this filing of the application with the TCB, [ISSYZONE TX INC.] is our designated US agent for service of process for the above referenced FCC ID. [GuangZhouYueYiXinXiKeJiYouXianGongSi] accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [ISSYZONE TX INC.] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2026/02/25 Applicant’s Name: Clarice Xie US Agent’s Name: Clarice Xie Title: Manager Title: Manager Signature Signature

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: GuangZhouYueYiXinXiKeJiYouXianGongSi Grantee code: 2BT6E FCC ID: 2BT6E-KTF2A FRN: 0037846466 Contact Name: Clarice Xie Address: BaiYunQuTongDeJieXiChaLu31HaoZhiSi E207-4DanYuan, Guangzhou City, Guangdong Province, 510407, China Telephone No: 13423772540 Fax No: N/A Email: [email protected] i. [GuangZhouYueYiXinXiKeJiYouXianGongSi] (“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. The applicant must sign this certification. ii. [GuangZhouYueYiXinXiKeJiYouXianGongSi] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [GuangZhouYueYiXinXiKeJiYouXianGongSi] (“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. Date: 2026-02-25 Applicant’s Name: Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1

TCB CALL página 1 File FCC ID: 2BT6E-KTF2A Please upload an exhibit that explains how does the TCB verify the new agent information: 1- Is the address of the agent a valid physical US mailing address (not a US post office box, not a virtual mailbox, not P.O. Boxes, not a vacant lot, not a public building, etc.) ○ We have checked if the address exists in a real and potential building (Google maps) + official US register, after this verification and the evidence below we can guarantee the following: not a US post office box not a virtual mailbox not P.O. Boxes not a vacant lot not a public building(note) ► We checked the FCC FRN Search based on the information provided by the grantee. On the official register from : https://opencorporates.com/companies/us_co/20231240414 In google: TCB CALL página 2 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "C5266091_X23_Ed1_US_Agent_Letter" included in the file is ok. 2- Is the agent physically located at that valid US address such that the agent can be legally served at that address? Yes , check above 3- Has the listed agent clearly agreed in writing to serve as the agent for the grantee at that address? Yes, it is included in the exhibit "C5266091_X23_Ed1_US_Agent_Letter" >

C5266091_X10_Ed.2 1/1 GuangZhouYueYiXinXiKeJiYouXianGongSi Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2026-02 -25 Subject: Request for Confidentiality FCC ID: 2BT6E-KTF2A To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☒ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☒ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of __180__ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Clarice Xie Title: Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization < GuangZhouYueYiXinXiKeJiYouXianGongSi > Company: GuangZhouYueYiXinXiKeJiYouXianGongSi Address: BaiYunQuTongDeJieXiChaLu31HaoZhiSi E207- 4DanYuan, Guangzhou City, Guangdong Province, 510407, China Product Name: FAN SYSTEM Model Number: KTF2A FCC Identifier: 2BT6E-KTF2A We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Clarice Xie Date: 2026-02-25 Title: Manager Signature of applicant:

Label Location On EUT Label

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 KDB 447498 D01 V06 and §1.1307(b) CFR Title 47 §2.1091(b): (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. FCC ID: 2BT6E-KTF2A EUT Specification EUT FAN SYSTEM Frequency band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.24GHz WLAN: 5.745GHz ~ 5.825GHz Others: 2.402GHz~2.480GHz Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Evaluation applied MPE Evaluation SAR Evaluation 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 Pd= Power density in mW/cm 2 Pout=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 Pd the limit of MPE, 1mW/cm2. 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. Measurement Result BLE worst case: Operating Mode Channel Frequency Measured Power Tune up tolerance Max. Tune up Power Antenna Gain Power density at 20cm Power density Limits (mW/cm 2 ) (MHz) (dBm) (dBm) (dBm) (dBi) (mW/ cm 2 ) 1M 2480 -4.08 -4.08±1 -3.08 3.37 0.0002 1 Test Result: Pass

O TA T es t R e p or t R e p or t N o : Y 2 00 3 A 0 1 90 - T 1 4 . T es t R e s u l t s 4 . 1 . G a i n a n d E ff i c i e n c y E f f i c i e n c y F r e q u e n c y G a i n T es t M o d e l ( M H z ) ( % ) ( d B i ) S t a t e 39 . 8 2 4 00 7 1 . 4 3 4 0 . 9 8 1 . 69 2 4 06 1 . 7 8 2 4 11 4 1 . 3 5 2 4 1 6 4 2 . 4 3 2 . 1 4 2 4 2 1 4 2 . 5 4 2 . 16 2 4 2 6 4 1 . 89 1 . 9 4 2 4 3 1 4 2 . 5 0 1 . 9 4 2 4 3 6 4 3 . 9 3 1 . 9 9 2 4 4 1 4 5 . 8 7 2 . 06 2 44 6 4 7 . 2 7 2 . 2 4 F ree A T 2 S p ace 4 9 . 3 2 2 . 42 5 1 . 0 1 2 . 4 5 5 2 . 8 0 2 . 82 5 4 . 05 3 . 0 1 5 4 . 7 9 2 . 9 2 5 6 . 1 0 3 . 22 5 7 . 3 6 3 . 11 5 8 . 6 1 3 . 22 5 9 . 7 8 3 . 3 7 5 9 . 7 4 3 . 2 2 4 50 2 4 5 6 2 4 6 1 2 4 66 24 7 1 2 47 6 2 4 8 1 2 4 86 2 4 9 1 2500 7 P a g e 8 o f 1 9 T A T e c h n o l o g y ( S h an g h a i ) C o . , L t d . T A - M B - 0 4 - 00 8 O T h i s r e p o r t s h a l l n o t b e r e p r o d u ce d exce p t i n f u l l , w i t h o u t t h e w r i t t en a pp r o v a l o f TA T e c h n o l o g y ( S h a n g h a i ) C o . , L t d 1.43 1.21 0.96 0.63 0.42 0.23 2.42 2.15 1.97 1.76 1.45 1.02 3.27 2.95 2.75 2.42 1.90 1.85

TEST REPORT Report No.: 8337EU012901W Applicant: GuangZhouYueYiXinXiKeJiYouXianGongSi Address: BaiYunQuTongDeJieXiChaLu31HaoZhiSi E207- 4DanYuan, Guangzhou City, Guangdong Province, 510407, China Product Name: FAN SYSTEM Model No.: KTF2A Trademark: N/A FCC ID: 2BT6E-KTF2A Test Standard(s): 47 CFR Part 15.247 Test Result: Pass Date of Receipt: Dec. 29, 2025 Test Date: Dec. 30, 2025 - Feb. 09, 2026 Date of Issue: Feb. 11, 2026 ISSUED BY: SHENZHEN EU TESTING LABORATORY LIMITED Prepared by: Reviewed and Approved by: Landon Qiu/ Engineer Sally Zhang/ Manager Page 2 of 54 Report No.: 8337EU012901W TRF Version: A01 Revision Record Report Version Issued Date Description Status V0 Feb. 11, 2026 Original Valid Page 3 of 54 Report No.: 8337EU012901W TRF Version: A01 Table of Contents 1 COVER PAGE .................................................................................................................................. 1 2 GENERAL INFORMATION ....................................................................................................................... 5 2.1 APPLICANT INFORMATION .................................................................................................................. 5 2.2 MANUFACTURER INFORMATION .......................................................................................................... 5 2.3 FACTORY INFORMATION ..................................................................................................................... 5 2.4 GENERAL DESCRIPTION OF E.U.T. ..................................................................................................... 5 2.5 TECHNICAL INFORMATION OF E.U.T. ................................................................................................... 6 3 TEST SUMMARY ...................................................................................................................................... 7 3.1 TEST STANDARD ............................................................................................................................... 7 3.2 TEST VERDICT ................................................................................................................................... 7 3.3 TEST LABORATORY ........................................................................................................................... 8 4 TEST CONFIGURATION .......................................................................................................................... 9 4.1 TEST ENVIRONMENT .......................................................................................................................... 9 4.2 TEST EQUIPMENT .............................................................................................................................. 9 4.3 DESCRIPTION OF SUPPORT UNIT ....................................................................................................... 11 4.4 TEST MODE ..................................................................................................................................... 11 4.5 DESCRIPTION OF CALCULATION ........................................................................................................ 11 4.5.1 Field Strength Calculation .................................................................................................. 11 4.5.2 Disturbance Calculation ..................................................................................................... 11 4.6 MEASUREMENT UNCERTAINTY ......................................................................................................... 12 4.7 DEVIATION FROM STANDARDS .......................................................................................................... 12 4.8 ABNORMALITIES FROM STANDARD CONDITION.................................................................................. 12 5 EVALUATION RESULTS (EVALUATION) .............................................................................................. 13 5.1 ANTENNA REQUIREMENT .................................................................................................................. 13 5.1.1 Test Specification .............................................................................................................. 13 5.1.2 Test Data ........................................................................................................................... 13 6 RADIO SPECTRUM MATTER TEST RESULTS (RF) ............................................................................ 14 6.1 6DB BANDWIDTH............................................................................................................................. 14 6.1.1 Test Specification .............................................................................................................. 14 6.1.2 E.U.T. Operation ................................................................................................................ 14 6.1.3 Test Setup Diagram ........................................................................................................... 15 6.1.4 Test Data ........................................................................................................................... 15 6.2 MAXIMUM CONDUCTED OUTPUT POWER .......................................................................................... 16 6.2.1 Test Specification .............................................................................................................. 16 6.2.2 E.U.T. Operation ................................................................................................................ 16 6.2.3 Test Setup Diagram ........................................................................................................... 16 6.2.4 Test Data ........................................................................................................................... 16 6.3 POWER SPECTRAL …

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