2ATM75018FlowSmart All-in-One

TCB CALL página 1 File FCC ID: 2ATM75018 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://bizfileonline.sos.ca.gov/search/business TCB CALL página 2 In google: TCB CALL página 3 ► 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" >

YOSMART INC. 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: Aug. 5, 2026 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2ATM75018 [YOSMART INC.] (“the applicant”) certifies that, as of the date of the filing of the application, [MIRAMONT SOLUTIONS LLC] (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. [MIRAMONT SOLUTIONS LLC] ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: MIRAMONT SOLUTIONS LLC F RN: 0036313369 Address:19 GEORGETOWN, IRVINE, CA92612 United States Signature: Contact Person: Wenyi Wang Tel: 951 401 3633 Email: [email protected] Applicant Company Name: YOSMART INC. FRN: 0028563856 Address: 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 Signature: Contact Person: Kejia Huang Tel: 9499547777 Email: [email protected]

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: YOSMART INC. Grantee code: 2ATM7 FCC ID: 2ATM75018 FRN: 0028563856 Contact Name: Kejia Huang Address: 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 Telephone No: 9499547777 Fax No: 9499547777 Email: [email protected] i. [YOSMART INC.] (“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. [YOSMART INC.] (“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. [YOSMART INC.] (“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: 2026/8/5 Applicant’s Name: YOSMART INC. 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

YOSMART INC. 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 FlowSmart All-in-One Company name YOSMART INC. Grantee code 2ATM7 FCC ID 2ATM75018 FRN 0028563856 Contact name Kejia Huang Address 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 Telephone number 9499547777 E-mail [email protected] Chipset/module information YL09V2 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 3 # 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 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 3 RAM: 1 GB 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 ; 4 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 ; After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. 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: Kejia Huang Date:2026/8/5 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications. ☒ ☒

C5266091_X10_Ed.2 1/1 < YOSMART INC. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2026.8.5 Subject: Request for Confidentiality FCC ID: 2ATM75018 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: Kejia Huang Title: Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization < YOSMART INC. > Company: YOSMART INC. Address: 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 Product Name: FlowSmart All -in- One Model Number: YS5018-UC, YS5018-UA, 5018US FCC Identifier: 2ATM75018 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: Kejia Huang Date: 2026.8.5 Title: Manager Signature of applicant:

Label & label location 20mm*10mm FCC ID: 2ATM75018 Label location

FCC ID: 2ATM75018 RF EXPOSURE EVALUATION Limits According KDB 447498 D01 General RF Exposure Guidance v06. The RF exposure evaluation requirements of §2.1091 for mobile device exposure conditions subject to MPE limits: Requirements of this section are a consequence of Commission responsibilities under the National Environmental Policy Act to evaluate the environmental significance of its actions. See subpart I of part 1 of this chapter, in particular § 1.1307(b). For purposes of this section, the definitions in § 1.1307(b)(2) of this chapter shall apply. 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 RF source's radiating structure(s) and the body of the user or nearby persons. In this context, the term “fixed location” means that the device is physically secured at one location and is not able to be easily moved to another location while transmitting. Transmitting devices designed to be used by consumers or workers that can be easily re-located, such as wireless devices associated with a personal desktop computer, are considered to be mobile devices if they meet the 20-centimeter separation requirement. 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 1.1307(b). Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) 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 id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation Lora Mode Field strength of the fundamental signal(dBuV/m @3m) ERP (dBm) Tune UP tolerance (dBm) Max Tune UP power (dBm) Max Tune UP power (mW) Power Density at R=20cm (mW/cm2) Limit (mW/cm2) Result Lora 102.43 5.08 5±1 6 3.98 0.0010 0.607 PASS Antenna gain: 0.96 dBi Limit=F/1500 F=910.3 ERP=dBuV/m@3m–95.2–2.15

Report No.: ZKT-260710L0626E Page 1 of 28 FCC TEST REPORT FCC ID:2ATM75018 Report Number. ................................ : ZKT-260710L0626E Date of Test ........................................ Jul 10, 2026 to Jul. 22, 2026 Date of issue .................................... : Jul. 22, 2026 Total number of pages ....................... 31 Test Result ...................................... : PA SS Testing Laboratory. ........................ : Shenzhen ZKT Technology Co., Ltd. Address .......................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name .......................... : YOSMART INC. Address .......................................... : 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 Manufacturer's name ................... : YOSMART INC. Address .......................................... : 25172 Arctic Ocean Drive,Suite 106,Lake Forest,California, United States 92630 Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.249 ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 Test procedure ................................. : / Non-standard test method .............. : N/A Test Report Form No. ..................... : / Test Report Form(s) Originator ..... : ZKT Testing Master TRF .................................... : Dated: 2020-01-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................. : FlowSmart All-in-One Trademark ...................................... : N/A Main test model: ............................... : YS5018-UC Ratings ............................................. : DC 3.6V From Battey Report No.: ZKT-260710L0626E Page 2 of 28 Testing procedure and testing location: Testing Laboratory ................................... : Shenzhen ZKT Technology Co., Ltd. Address ...................................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) .................... : Jackson Fang Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Report No.: ZKT-260710L0626E Page 3 of 28 Table of Contents Page 1. VERSION .................................................................................................................. 4 2. TEST SUMMARY ...................................................................................................... 5 2.1 TEST FACILITY ...................................................................................................... 6 2.2 MEASUREMENT UNCERTAINTY .......................................................................... 6 3.1 GENERAL DESCRIPTION OF EUT ........................................................................ 7 3.2 Test Setup Configuration ......................................................................................... 8 3.3 Support Equipment .................................................................................................. 8 4. EMC EMISSION TEST ............................................................................................ 12 4.1 Conducted emissions ............................................................................................ 12 4.1.1 POWER LINE CONDUCTED EMISSION Limits ................................................ 12 4.1.2 TEST PROCEDURE .......................................................................................... 12 4.1.3 DEVIATION FROM TEST STANDARD .............................................................. 12 4.1.4 TEST SETUP ..................................................................................................... 13 4.1.5 EUT OPERATING CONDITIONS ....................................................................... 13 4.1.6 Test Result ......................................................................................................... 13 4.2 Radiated emissions ............................................................................................... 14 4.2.1 Radiated Emission Limits ................................................................................... 14 4.2.2 TEST PROCEDURE .......................................................................................... 15 4.2.3 DEVIATION FROM TEST STANDARD .............................................................. 15 4.2.4 TEST SETUP ..................................................................................................... 15 4.2.5 EUT OPERATING CONDITIONS ....................................................................... 16 4.2.6 TEST RESULTS ................................................................................................. 16 4.2.7 Field Strength Calculation .................................................................................. 21 5. 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE ....................................... 22 6.1 Block Diagram Of Test Setup ................................................................................ 22 6.2 Applicable Standard .............................................................................................. 22 6.3 Test Procedure ...................................................................................................... 22 6.4 EUT Operating Conditions .............................................................................…

Text truncated - open the document above for the full version.

      ד♲គ᎔ 䕢扇☡皐挠甙璁᥈☀☡  蠄 㤩 邃虷 
㤩㔕咁㤩 䙠允 其ሔ邆鐈„瘄允 其†允 熉甃‰Š‰‹Œ Œ‰Ž⅐ ቘሔ邆鐈 2026/06/25     捗⚂•甖晖˜ 㤩䕘㍴ ›襸蜈Ÿ㍂襸敃£ 㤩␉¥¦§ 㞐©Ÿ瀲«Ÿ¬䙠煅☥㍴     ┑╹襥㍳᥈☀   䕘 䕤噙
邃执田劃疙€‚❈„ …甖‡ˆᕓŠ‹ሹ⠁‘’瀲” 㞐–—瘨㍴煅☥㍴‡╆灲灲敘¡    ၲ±捗⚂•甖晖˜         V1.0 2026/06/25    ሒ±㤩䕘㍴    ႁ±㤩›襸蜈Ÿ㍂襸敃£   ㌹±㤩␉¥¦§       戉☀甔䙉␉ᐠₐጣᐓᕦ瀗 E2 E1 Antenna E3 NC E1 E2 NC0欧    ሠ±㞐©Ÿ瀲«Ÿ¬䙠煅☥㍴