2BDLQ-LFW2939-01Fall prevention sensor

21, Seounsandan-ro 6-gil, Gyeyang-gu, Incheon,Korea Tel. +82-32-556-9838 / Fax. +82-32-556-9838 www.leeteklife.com Unrivaled bowel sensor healthcare system that supports patients in maintaining self-esteem and hygiene Smart Healthcare System Bowel Sensor Operations Management System www.leeteklife.com 20172019201820202021 8.57M 13M 23 million 19 million 15 million 11 million 7 million 2022203020402050 17.22M 19 million The Aging Population in Transition The aging population over 65 is experiencing a notable increase. Challenges of Aged Care Facility Oversupply A need to differentiate services emerges An increasing number of aged care facilities Despite the growing elderly population services are experiencing low satisfaction levels 2 caused by exposure to humidity in diapers resulting from neglected bowel movements exacerbates the pain of patients in the room Colon bacillus, Dysentery, Staphylococcus aureus, etc The emotional burden of not being able to personally care for the patient weighs heavily on the guardians Skin rashes Unsanitary environment Bacteria in excrement Heightened anxiety for guardians Wearing a diaper poses a potential threat. to the health of patients, not only in terms of self-esteem. Nursing care workers responsible for numerous patients face a series of challenging and painful tasks when physically assessing the bowel condition of each patient. Providing the desired high-quality services to patients and their guardians is limited by the challenges of excessive labor costs and operational difficulties. The patient’s distress with a soiled diaper is difficult to comprehend, especially when they must wait for the diaper to be changed. The moment a patient is prescribed to wear a diaper their self-esteem may be adversely affected. 3 For patients dealing with dementia, urinary incontinence, severe conditions, and cognitive impairments related to defecation, our Smart Healthcare Bowel Sensor Operation System offers improved management. This extends support not only to the patients but also to the dedicated carers, who, always concerned about their patients’ conditions, indirectly bear the burden of suffering. Additionally, healthcare workers, responsible for the well-being of both patients and guardians, find enhanced care through our system. Our Smart Healthcare System is designed to provide comprehensive assistance. 4 1. What is the Bowel Sensor Operations Management System 2. What are the benefits of the system? 3. Detailed overview of the system’s processes 4. Product configuration for the system ... 6 ... 7 ... 10 ... 14 5 Experience an unrivaled bowel sensor healthcare system that not only supports patients in maintaining self-esteem and hygiene but also enhances overall patient management and hospital operations in real-time. 1. Counseling/Registration for Hospitalization 2. Hospitalization of Patient (with Attached Sensor) 3. Monitoring 4. Bowel Sensor Issuing Notifications for Bowel Movements 5. Data Delivery to Staff 6. Diaper Change (Health Care) 7. Patient Treatment and Care 8. Data Storage on Web Server 9. Consultation with Caregiver Processes of Smart Healthcare System What is the Bowel Sensor Operations Management System? 6 ・ Prompt assistance for patients, minimizing the occurrence of secondary diseases such as skin rashes, food poisoning, abdominal pain, diarrhea, bloody excrement, respiratory infections, bedsores, and more. ・ Elevated Patient’s Self-Esteem ・ Efficient Defecation Treatment Reducing Odor and Maintaining a Pleasant Environment ・ Increased User Satisfaction ・ Relieved Guardian Anxiety for a More Comfortable Daily Life ・ Enhanced Caregiver Concentration and Bonding Enhanced Patient and Guardian Satisfaction What are the benefits of the system? 7 ・ Real-Time Monitoring for Large Patient Numbers ・ Planned Patient Care ・ Improved Working Environment ・ Partial Work Intensity Reduction - 30% Reduction in Diaper Replacement Rate - Real-Time Notification for Care Workers and Management Centers - Task Division Based on Program Results - Increased Concentration on Patient Care Alleviates Caregiver Fatigue What are the benefits of the system? 8 ・ Labor and Operating Cost Reduction ・ Efficient Resource Utilization ・ Improved Workforce Retention ・ Data-Driven Patient Management - Accumulation and Utilization of Event Data for Patients ・ Strengthen Quality Medical Services and Implement Unique Service Policies Serving as a Strategic Marketing Tool. ・ Additional Revenue Generation through Dualizing the System ・ Transition from Traditional Analog Methods to a More Innovative Induced Charging Model ・ Servitization as a Paid Service ・ Financial Sustainability by Covering Hospital Operating Expenses through the Generation of Additional Profits from a Monthly Fixed Amount Cost Reduction in Hospital Operations What are the benefits of the system? 9 ・ The sensor, designed to be light in weight and of optimal size to minimize irritation, sets the standard for defecation weight. ・ Securely attach the sensor to the outer cover of diapers ensuring no direct contact with the skin and filth. ・ Register comprehensive patient hospitalization information at the central management center. ・ Capture detailed data, including patient name, room, bed number, person in charge, group, etc. ・ Enable automatic data management after each diaper change. 01 02 Sensor Application Patient Information Registration and Management Smart Healthcare System Details Detailed Overview of Smart Helathcare System’s Processes 10 ・ Receive notification of the patient’s bowel movement. ・ Display notifications on the monitor in the central management center. ・ Operate the receiver device for caregivers, prompting diaper change. ・ Display status by color, indicating whether the action has been processed. ・ Display real-time information on patient care and program operation status. ・ Initiate requests for handling work by the assigned care worker if not processed. ・ Accumulate event data for each pa…

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LEETEK LIFE CO.,LTD 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea Tel: + 82-32-556-9838, Fax: + 82-32-324-9840 Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September 19, 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID : 2BDLQ-LFW2939-01 LEETEK LIFE CO.,LTD (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. LEETEK LIFE CO.,LTD (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Sincerely, Manager / Sangman Park LEETEK LIFE CO.,LTD LEETEK LIFE CO.,LTD 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea Tel: + 82-32-556-9838, Fax: + 82-32-324-9840 Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September 19, 2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID : 2BDLQ-LFW2939-01 LEETEK LIFE CO.,LTD (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. equipment. Sincerely, Manager / Sangman Park LEETEK LIFE CO.,LTD

Rev 20/09/2024 LEETEK Life Co.,LTD 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, Republic of Korea Tel:+82-32-556-9838 / Fax:+82-32-556-9840 ------------------------------------------------------------------------------------------------------------------------------------------- Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September-20-2024 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: 2BDLQ-LFW2939-01 Applicant FRN: 0034488973 LEETEK Life (“the applicant”) certifies that, as of the date of the filing of the application, JTECH Global Enterprises Inc is our designated U.S. agent for service of process for the above referenced FCC ID. LEETEK LIFE 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 the equipment. JTECH Global Enterprises Inc accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Your New FCC Grantee Code is: 2BHHL Grantee Code Registration Number: GC332775 Grantee Code Applied Date: 07/09/2024 Company Name: JTECH Global Enterprises Inc FRN : 0035666205 Address Line 1: 1965 Evergreen Blvd, Address Line 2: Ste 300, Duluth, P.O. Box: City: Duluth State: GA Country: US Zip Code: GA 30096 Contact Name: Salvatore Veni Title: Telephone Number: +1-800-321-6221 Extension: Fax Number: +1-700-682-3459 E-mail: [email protected] Email: [email protected] Sincerely, Rev 20/09/2024 LEETEK Life JTECH Global Enterprises Inc SANGMAN PARK SAL VENI

LEETEK LIFE CO.,LTD 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea Tel: + 82-32-556-9838, Fax: + 82-32-324-9840 Date: September 19, 2024 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID : 2BDLQ-LFW2939-01 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: PERMANENT Exhibit TypeFile Name Part ListPart List.pdf Schematics Diagram(s)Schematics.pdf Operation descriptionOperational Description.pdf Block diagramBlock diagram.pdf And 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. 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, Manager / Sangman Park LEETEK LIFE CO.,LTD

LEETEK LIFE CO.,LTD 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea Tel: + 82-32-556-9838, Fax: + 82-32-324-9840 Date: September 19, 2024 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 FCC ID : 2BDLQ-LFW2939-01 To whom it may concern: I, the undersigned, hereby authorize Young-Jin, Lee of KES Co., Ltd. and hereafter referred to as KES Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Young-Jin, Lee of KES Co., Ltd. on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing KES Co., Ltd. as our agent, we still recognize that we are responsible to: a)comply with the relevant provisions of the certification program; b)make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c)make claims regarding certification only in respect of the scope for which certification has been granted; d)do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e)upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f)use certification only to indicate the products are certified as being in conformity with specified standards; g)endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner; LEETEK LIFE CO.,LTD 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea Tel: + 82-32-556-9838, Fax: + 82-32-324-9840 h)ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i)keep a record of all complaints made known to the us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the Certification Division when requested; j)take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k)document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Manager / Sangman Park LEETEK LIFE CO.,LTD REMARK: 1.This authorization letter will be sent along with your application when filing with the Certification Division. 2.Please follow the format and type it on company letterhead and send original to us. 3.Authorized signature must be in agreement with grantee code contact in FCC database.

FCC ID : 2BDLQ-LFW2939-01 Page 1 of 3 External photos FCC ID : 2BDLQ-LFW2939-01 Page 2 of 3 FCC ID : 2BDLQ-LFW2939-01 Page 3 of 3

FCC ID : 2BDLQ-LFW2939-01 Page 1 of 1 Label Location Label The device is so small that it is not practicable to place the statement specified under 15.19 statement request, the information required by this paragraph shall be placed in a prominent location in the User’s Manual.

FCC ID : 2BDLQ-LFW2939-01 Page 1 of 2 Internal photos FCC ID : 2BDLQ-LFW2939-01 Page 2 of 2 PCB Antenna Blank

FCC ID: 2BDLQ-LFW2939-01 Page 1 of 1 RF exposure According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 ㎒ to 6 ㎓ at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(㎓)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, Where; f(㎓) is the RF channel transmit frequency in ㎓ Power and distance are rounded to the nearest ㎽ and mm before calculation The result is rounded to one decimal place for comparison Results Mode Frequency (㎒) Distance (mm) Max Average tune-up power (㏈m) Calculation value Exclusion Threshold (㏈m) (㎽) Lora 902.2~ 927.5 5 9.50 8.913 1.717 ≤3.0

TEST REPORT Report No. : KES-RF240513 Page 1 / 31 KES Co., Ltd. #3002, #3503, #3701, 40, Simin-daero365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Republic of Korea Tel : +82-31-425-6200, Fax : +82-31-341-3838 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr).  FCC TEST REPORT 1. Client ○ Name : LEETEK LIFE CO.,LTD ○ Address : 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea 2. Sample Description ○ Product item : Fall prevention sensor ○ Model name : LFW2939-01 ○ Manufacturer etc. : LEETEK LIFE CO.,LTD 3. Date of test : 2024.08.23 ~ 2024.09.20 4. Location of Test :  Permanent Testing Lab  On Site Testing ○ Adress : 473-21, Gayeo-ro, Yeoju-si, Gyeonggi-do, Korea 5. Test method used : Part 15 Subpart C 15.247 6. Test result : PASS The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This laboratory is not accredited for the test results marked *. This test report is not related to KOLAS accreditation. Affirmation Tested by Technical Manager Name : Gu-Bong, Kang (Signature) Name : Yeong-Jun Cho (Signature) 2024 . 09. 30. KES Co., Ltd. Accredited by KOLAS, Republic of KOREA Report No. : KES-RF240513 Page 2 / 31 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). REPORT REVISION HISTORY Date Test Report No. Revision History 2024.09.30 KES-RF240513 Initial This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. This document may be altered or revised by KES Co., Ltd. personnel only, and shall be noted in the revision section of the document. Any alteration of this document not carried out by KES Co., Ltd. will constitute fraud and shall nullify the document. Use of uncertainty of measurement for decisions on conformity (decision rule):  No decision rule is specified by the standard, when comparing the measurement result with the applicable limit according to the specification in that standard. The decisions on conformity are made without applying the measurement uncertainty(“simple acceptance” decision rule, previously known as “accuracy method”). ☐ Other (to be specified, for example when required by the standard or client) Report No. : KES-RF240513 Page 3 / 31 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). TABLE OF CONTENTS 1. General information ................................................................................................................................... 4 1.1. EUT description .......................................................................................................................... 4 1.2. Test configuration........................................................................................................................ 4 1.3. Information about derivative model ............................................................................................ 5 1.4. Accessory information ................................................................................................................ 5 1.5. Device modifications ................................................................................................................... 5 1.6. Sample calculation ..................................................................................................................... 5 1.7. Measurement Uncertainty .......................................................................................................... 5 1.8. Frequency/channel operations ................................................................................................... 6 2. Summary of tests ....................................................................................................................................... 7 3. Test results ................................................................................................................................................. 8 3.1. 6 ㏈ bandwidth .......................................................................................................................... 8 3.2. Output power ............................................................................................................................ 10 3.3. Power spectral density ............................................................................................................. 12 3.4. Radiated restricted band and emissions .................................................................................. 14 3.5. Conducted spurious emissions & band edge ........................................................................... 25 3.6. AC conducted emissions .......................................................................................................... 28 3.7. Antenna Requirement ............................................................................................................... 30 Appendix A. Measurement equipment .......................................................................................................... 31 Report No. : KES-RF240513 Page 4 / 31 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). 1. General information Applicant: LEETEK LIFE CO.,LTD Applicant address: 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, South Korea Test site: KES Co., Ltd. Te s t site address: #3002, #3503, #3701, 40, Simin-daero365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Republic of Korea 473-21, Gayeo-ro, Yeoju-si, Gyeonggi-do, Korea Test Facility FCC Accreditation Designation No.: KR0100, Registration No.: 444148 FCC rule part(s): 15.247 FCC ID: 2BDLQ-LFW2939-01 Test device serial No.: Production Pre-production Engineering 1.1. EUT descript…

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TEST REPORT Report No. : KES-EM242575 Page 1 / 27 KES Co., Ltd. #3002, #3503, #3701, 40, Simin-daero365beon-gil, Dongan- gu, Anyang-si, Gyeonggi-do, 14057, Republic of Korea Tel : +82-31-425-6200, Fax : +82-31-341-3838 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). 1. Client Applicant : LEETEK LIFE CO.,LTD Applicant Address : 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, Republic of Korea 2. Sample Description Product name : Fall prevention sensor Model/Type No. : LFW2939-01 Variant Model : LF-2T Manufacturer : LEETEK LIFE CO.,LTD Manufacturer Address : 2F, 47, Ojeong-ro, Bucheon-si, Gyeonggi-do, Republic of Korea 3. FCC ID : 2BDLQ-LFW2939-01 4. Date of Receipt : Aug. 26, 2024 5. Test date : Sep. 03, 2024 ~ Sep. 04, 2024 6. Date of Issue : Sep. 24, 2024 7. Test Results : In Compliance Tested by Reviewed by Dong In, Kim EMC Test Engineer Dong Hun, Jang EMC Technical Manager Report No. : KES-EM242575 Page 2 / 27 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). REPORT REVISION HISTORY Date Test Report No. Revision History Sep. 24, 2024 KES-EM242575 Issued This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. This document may be altered or revised by KES Co., Ltd. personnel only, and shall be noted in the revision section of the document. Any alteration of this document not carried out by KES Co., Ltd. will constitute fraud and shall nullify the document. Report No. : KES-EM242575 Page 3 / 27 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). TABLE OF CONTENTS 1.0 General Product Description ................................................................................................................... 4 1.1 Test Voltage & Frequency ....................................................................................................................... 5 1.2 Variant Model Differences ....................................................................................................................... 5 1.3 Device Modifications ............................................................................................................................... 5 1.4 Equipment Under Test ............................................................................................................................ 5 1.5 Support Equipments ............................................................................................................................... 5 1.6 External I/O Cabling ................................................................................................................................ 6 1.7 EUT Operating Mode(s) .......................................................................................................................... 6 1.8 Configuration ........................................................................................................................................... 7 1.9 Remarks when standards applied .......................................................................................................... 8 1.10 Calibration Details of Equipment Used for Measurement ....................................................................... 8 1.11 Test Facility ............................................................................................................................................. 8 1.12 Measurement Procedure ........................................................................................................................ 8 1.13 Laboratory Accreditations and Listings ................................................................................................... 9 2.0 Test Regulations ................................................................................................................................... 10 2.1 Conducted Emissions at Mains Power Ports ......................................................................................... 11 2.2 Radiated Electric Field Emissions(Below 1 ㎓) .................................................................................... 13 2.3 Radiated Electric Field Emissions(Above 1 ㎓) ................................................................................... 15 APPENDIX A – TEST DATA ............................................................................................................................ 17 Conducted Emissions at Mains Power Ports ........................................................................................... 17 Radiated Electric Field Emissions(Below 1 ㎓) ....................................................................................... 19 Radiated Electric Field Emissions(Above 1 ㎓) ....................................................................................... 21 APPENDIX B - Test Setup Photos and Configuration ..................................................................................... 23 Radiated Electric Field Emissions(Below 1 ㎓) ....................................................................................... 24 Radiated Electric Field Emissions(Above 1 ㎓) ....................................................................................... 26 Report No. : KES-EM242575 Page 4 / 27 KES-QP16-F01(00-23-01-01) KES Co., Ltd. The authenticity of this test report can be found on the verification page of our website (www.kes.co.kr). 1.0 General Product Description Main Specifications of EUT are: Model Name FCC : Fall prevention sensor Model code LFW2939-01 Manufacture LEETEK LIFE CO.,LTD certification KC, FCC Frequency range KC : 922.1 ~ 923.3MHz FCC : 902.2 ~ 927.5MHz Channel Spacing 200KHz Occupied Bandwidth 125 KHz Frequency stability +/- 5 ppm Spurious Rejection -40dB…

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APPROVAL NUMBERDATE : Jul. 18. 2024 SHEET NUMBER : Ant-04 SPECIFICATION FOR APPROVAL LEETEK DESIGNATIONLORA Internal Pattern Antenna Part NumberLeetek IN-Ant-04 Model NumberLFW2939-01 R&D ISSUECHECKEDPMAPPROVED 47, Ojeong-ro, Ojeong-gu, Bucheon-si, Gyeonggi-do, Republic of Korea TEL:82-32-324-9838, FAX:82-32-324-9840 Contents 1.General 1.1.Product Description 1.2.Product Number 1.3.Units, Definitions, and Abbreviations 1.4.Interface 1.5.Conditions 1.6.Coordinate System 2.Electrical Properities 2.1.Frequency Bands 2.2.Impedance 2.3.VSWR 2.4.Gain 2.5.Power Rating 3.Antenna Drawing 4.Radiation Gain 1.General 1.1.Product Description LORA Internal antenna for use in a portable unit for wireless communication (referred to as a radio). 1.2.Product Number LEETEK Product Name : Leetek IN-Ant-04 1.3.Units, Definitions, and Abbreviations Unless otherwise stated, SI units are used. TXTransmit Band RX Receiver Band PCB Printed Circuit Board RHRelative Humidity dBi Antenna gain in Db (isotropic) CW Continuous Wave 1.4.Interface All properties are guaranteed under the conditions that antenna/radio interface is designed in accordance with instructions provided by Leetek. Functionality with other equipment (such as couplers etc.) is not guaranteed unless this has been agreed upon separately. 1.5.Conditions Unless otherwise stated all temperature tolerances are±3°C and all RH tolerances are±5 percentage units. Unless otherwise stated all values are valid at 20°C and 50％ RH. 1.6.Coordinate System The coordinate system for the radio is defined as follows; . Origin in center of gravity. . Positive X axis is perpendicular to, and directed from, front plane. . Positive Y axis is perpendicular to, and directed from, right side plane(as seen from front). Positive Z axis is perpendicular to, and directed from, top plane. 2.Electrical Properties 2.1.Frequency Band 2.1.1 LORA Band : 902 ~ 928MHz 2.2. Impedance 2.2.1 Nominal Value 50 Ohms 2.2.2 Method Leetek will supply engineering assistance to ensure that the impedance Over the frequency bands is as close to 50 ohms as possible after matching. Both free space and talk position are considered, with priority given to talk position. 2.3.VSWR Below are listed the maximum values of the worst matched frequency within each band including production variation influences. 2.3.1 VSWR at Free Space 902MHz : 2.3, 915MHz : 2.2, 928MHz : 2.2 2.3.2 Tolerance of Center Frequency Center Frequency at Lora Band : Standard±15MHz 2.3.3 Method of Measurement A 50 ohms coaxial cable is connected(soldered) to the 50 ohm feeding point on the PCB. The connection of the coaxial cable is done so as to introduce a minimum of mismatch. In the other end, the coaxial cable is connected to a network analyzer. The analyzer is calibrate…

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