2A8QA-ITEMPSiTempShield wearable thermometer

iTempShield TM Patient Guide CCR No:CR2022114 , DocFolder Id:Design-IFU-00006 , Revision:4 , Version:B , Current Status:Released and EFFECTIVE Effective Date:10-Nov-2022 Report generated by: JoshSapers, on Wed Nov 30 17:45:42 EST 2022 Copyright 2022 by Qualcy Systems Inc. All Rights Reserved iTempShield TM Patient Guide 1 Read these instructions fully before using the IDION iTempShield. TM This Patient Guide provides important safety information about the IDION iTempShield TM and its mobile application. For complete instructions go to www.idion.us/userguide. Please do not self-diagnose based solely on the device readings. Always consult your physician. System Overview The IDION iTempShield TM is a wearable device that senses body temperature and communicates with a mobile app on your smartphone or tablet. When the iTempShield TM is connected to your device, it sends all temperature measurements automatically. The iTempShield TM can be worn for 60 days before needing to be replaced. The IDION Shield phone application allows you to view current and historical temperature measurements. If this device is being provided by a clinician they may have real-time access to your temperature data and may be able to review all of your readings. Scan this QR Code to watch the instructional video to set up your iTempShield TM device: CCR No:CR2022114 , DocFolder Id:Design-IFU-00006 , Revision:4 , Version:B , Current Status:Released and EFFECTIVE Effective Date:10-Nov-2022 Report generated by: JoshSapers, on Wed Nov 30 17:45:42 EST 2022 Copyright 2022 by Qualcy Systems Inc. All Rights Reserved iTempShield TM Patient Guide iTempShield TM Patient Guide 32 System Contents IDION iTempShield TM There is no adhesive on the back of the iTempShield. TM Adhesive tape is provided to be applied over the top of the device. Patient guide (this document) Smart Phone Required Activating & Using Your iTempShield TM Getting started Install the IDION Shield app on your phone by scanning this QR code with the camera on your phone. You can also install the IDION Shield app by downloading it directly from the app store in your phone. If you are an iPhone user, go to If you are an Android user go to Type in IDION Shield and click on this image DO NOT REMOVE THE BACK OF THE DEVICE Silicone Adhesive Tape Download IDION SHIELD APP CCR No:CR2022114 , DocFolder Id:Design-IFU-00006 , Revision:4 , Version:B , Current Status:Released and EFFECTIVE Effective Date:10-Nov-2022 Report generated by: JoshSapers, on Wed Nov 30 17:45:42 EST 2022 Copyright 2022 by Qualcy Systems Inc. All Rights Reserved iTempShield TM Patient Guide iTempShield TM Patient Guide 54 1. Enable “Allow notifications,” and select the box to agree to the Terms and Conditions. 2. After viewing the brief iTempShield TM overview on the phone application, select “Enable” and then select “OK” to allow the device to connect with your phone. 3. If you are an iPhone user, tap the top area of the back of your phone to the device. If you are an Android user, tap the middle of your phone to the device. If the connection is not made, move the device across the back of the phone and try again. 4. Keep Bluetooth enabled on your phone at all times. 5. Keep your iTempShield TM device and your phone close together, with a maximum range of 32 feet (10 meters) and no physical obstacles (such as a wall) between them. It will take up to 20 minutes for the device to adjust to your temperature. You can use each device for up to 60 days. Apple and app store and google play are registered trademarks of Apple Inc and Google LLC. Bluetooth word mark is registered trademark owned by Bluetooth SIG, Inc. Applying the iTempShield TM Adhere sensor to tape a. Tear a three inch strip from the tape roll. b. With the device logo visible and upright, place the adhesive tape over the top. Prepare chest a. Select area on left or right upper chest. b. If needed, trim hair to ensure good contact with skin. c. Clean and dry skin. d. DO NOT apply iTempShield TM to an open wound or wet/ moist skin. 1 Adhere tape to chest a. Avoid stretching adhesive tape when applying it to skin. b. Place tape’s adhesive side on chest, then firmly press tape against skin to secure it. 3 2 3 Inches CCR No:CR2022114 , DocFolder Id:Design-IFU-00006 , Revision:4 , Version:B , Current Status:Released and EFFECTIVE Effective Date:10-Nov-2022 Report generated by: JoshSapers, on Wed Nov 30 17:45:42 EST 2022 Copyright 2022 by Qualcy Systems Inc. All Rights Reserved iTempShield TM Patient Guide iTempShield TM Patient Guide 76 Temperature screen (main screen) The Temperature screen shows the latest temperature measurement and device battery level. When the iTempShield TM first connects to the app, it sends temperature readings every 5 seconds. After the first 10 minutes, the device sends temperature readings approximately every 5 minutes. How to track your temperature To view your temperature history, tap the History tab. On the history screen you can review the temperature measurements as a List ( ) or as a Chart ( ). Temperature threshold Your clinician may set up a threshold for your temperature measurements. When your core temperature exceeds the threshold value, the reading is marked with a red dot ( ) in the temperature history and your clinician is informed immediately. Temperatures below the threshold will be marked with blue dots ( ). List viewChart view CCR No:CR2022114 , DocFolder Id:Design-IFU-00006 , Revision:4 , Version:B , Current Status:Released and EFFECTIVE Effective Date:10-Nov-2022 Report generated by: JoshSapers, on Wed Nov 30 17:45:42 EST 2022 Copyright 2022 by Qualcy Systems Inc. All Rights Reserved iTempShield TM Patient Guide iTempShield TM Patient Guide 98 Battery level • The iTempShield TM must be replaced before the battery is depleted (after approximately 60 days of use). • When you see the Battery is Low notification in the phone app, contact your healthcare provider for instructions. How to care for your i…

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iTempShield TM User Guide V4 Directions For Use Read these instructions fully before using the iTempShield TM . INDICATIONS iTempShield is a battery-powered wearable thermometer intended for continuous measurement of human body temperature on the upper chest via wireless communication to a smart device application. iTempShield is intended for single-use and for persons older than 5 years in healthcare facilities and home environments. The patient is the intended user of the iTempshield. Note: iTempShield TM is not FDA approved or cleared. C0NTRAINDICATIONS iTempShields are contraindicated for patients who exhibit allergic reactions to Silicon adhesives (tape), Silicone rubber, or Polyester. DESCRIPTION The iTempShield TM is a wearable device that senses body skin temperature and communicates with an app on your smartphone or tablet to calculate your internal body temperature. When the iTempShield TM is connected to your device, it sends all temperature measurements automatically. You can wear an iTempShield TM for up to 60 days and check your current temperature and temperature measurements history at any time. You have the ability to share the data with your clinician if your clinician has established an IDION account. WARNINGS, CAUTIONS, AND NOTES • The iTempShield TM should not be used as the sole basis for diagnosis or therapy decisions. It must be used in conjunction with your physician. • The iTempShield TM should be free of any visible defects, discoloration, or damage. Do not use and ask your physician for another iTempShield TM if any visible defects, discoloration, or damage is present. • No heavy exercise or contact sports when using the iTempShield TM . Exercise may interfere with temperature measurement accuracy. • Avoid extreme heat or cold for more than a few minutes. This could affect performance or accuracy. • When taking a shower, Pat dry the iTempShield TM do not rub aggressively. If adhesive lifts up replace it. • After shower the temperature reading may be lower for several minutes as the chest area is cooler. • You may also remove the iTempShield TM before taking a shower dry off and re-apply. • The iTempShield TM may take up to 20 minutes to reach stable body temperature. iTempShield TM User Guide V4 • If you feel discomfort or pain from the patch or iTempShield TM , contact your doctor. • If you see the following, replace adhesive patch right away: o Adhesive patch’s edges lift easily or curl up more than 3 mm o Sensor or adhesive patch have shifted from their original location • When changing clothes, avoid snagging the iTempShield TM . Wear loose-fitting clothes when possible. • Do not use the iTempShield TM during MRIs, X-Rays, or CT Scans as it may result in physical harm. • Avoid contact with iTempShield TM during defibrillation. • Do not use the iTempShield TM in the presence of flammable anesthetics or other flammable substances in combination with air, oxygen-enriched environments, or nitrous oxide to avoid risk of exposure. • Avoid using the iTempShield TM during electrocautery. • Avoid placing the iTempShield over compromised skin, excessive hair, implants, ports, subcutaneous or dermal fillers or scar tissue, as it may result in incorrect readings. • Do not apply over or near pacemakers to avoid any potential interference from the Bluetooth communication. • The iTempShield TM should not be used near electrical equipment that may affect the shield’s performance. • Check the iTempShield TM site to ensure skin integrity and to avoid damage or irritation to the skin. • Incorrect readings may be caused an iTempShield TM that is not placed on an appropriate application site. • The iTempShield TM placement site should be hair-free, cleaned of debris, and dry before placement. • The iTempShield TM may not reflect the actual body temperature when used on patients undergoing treatments that may alter their normal temperature regulation (e.g., therapeutic hypothermia, antipyretics). • Avoid direct heating or cooling of the iTempShield TM . Localized temperature exposure of the shield may result in no or incorrect readings. • An iTempShield TM that becomes partially dislodged may cause no or incorrect readings. • Rapid or large changes in ambient temperature may cause no or incorrect readings. • Periodically check the iTempShield TM site for proper adhesion to minimize the risk of incorrect or no readings. • Change or modifications that are not expressly approved by the manufacturer could void the user’s authority to operate the equipment. • Do not modify or alter the sensor in any way. Alteration or modification may affect performance and/or accuracy. • To prevent damage, do not soak or immerse the iTempShield TM in any liquid solution. • Do not attempt to sterilize by irradiation, steam, autoclave, or ethylene oxide as it will damage the iTempShield TM . • Do not attempt to reprocess, recondition, or recycle the iTempShield TM . iTempShield TM User Guide V4 • Portable RF communications equipment (including peripherals such as antenna cables and external antennas) should be used no closer than 30 cm (12 inches) to any part of the iTempShield TM . • Keep the iTempShield TM away from electrical equipment that emits radio frequencies to minimize radio interference. Radio interference may result in no or inaccurate readings. • The iTempShield TM does not include an adhesive on the device. Do not attempt to peel away any part of the iTempShield TM and use the specified adhesive patches for application to the body. • Keep the iTempShield TM protected from excessive dust. • If in an environment with a temperature below the operational temperature range specified in the environmental section, ensure the iTempShield TM is covered by warm clothing. • Do not use adhesive other than the one provided with the iTempShield TM unless prescribed by the physician. • Do not swallow the iTempShield TM . • Children should be supervised while using the iTempshield. • Keep the iTempShie…

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SCS-F019: Confidentiality Request Letter Page 2 of 3 Rev 7.0 12/2/2022 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046-1609 Cc: Bureau Veritas Consumer Products Services Inc. 775 Montague Expressway Milpitas, CA 95035 Subject: Confidentiality Request for FCC ID: 2A8QA-ITEMPS Pursuant to CFR 47 sections 0.457 and 0.459, we respectfully request permanent confidential treatment of the following Exhibits accompanying this application be held confidential: Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagram Short Term External Photos Short Term Permanent i Internal Photos Short Term Permanent Operational Description/ Theory of Operation Short Term Permanent Parts List Short Term Permanent Tune-Up Procedure Short Term Permanent Schematics Short Term Test Setup Photos Short Term Permanent i User’s Manual 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. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: To avoid premature release of sensitive information prior to marketing or release of the product to the public, the applicant requests the following documents contained in this certification application be temporarily withheld from public disclosure for an initial period of 45 or 180 days; or for a specified date of not to exceed 180 days from the Grant Date The applicant understands that disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Client’s signature: Client’s name & title: Thomas Blackadar CTO Contact information / address: [email protected] 508-654-0766 12 Plymouth Rd. Darien CT 06820 i Permanent confidentiality may be requested in accordance with FCC KDB 726920

Project number: EW0409 FCC ID: 2A8QA-ITEMPS Date: 2023-01-17 Issue 2 Page 1 of 2 EW0409 External Photos External Ambient Side Project number: EW0409 FCC ID: 2A8QA-ITEMPS Date: 2023-01-17 Issue 2 Page 2 of 2 External Skin Side

FCC ID: 2A8QA-ITEMPS

AA BB CC DD EE FF 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 DRAWN CHK'D APPV'D MFG Q.A UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS SURFACE FINISH: TOLERANCES: LINEAR: ANGULAR: FINISH: DEBURR AND BREAK SHARP EDGES NAME SIGNATUREDATE MATERIAL: DO NOT SCALE DRAWING REVISION TITLE: DWG NO. 1FO1TEEHS1:2:ELACS A3 WEIGHT: iTemp Shield Module Package Label LOT CODE: Product ID: WWW.IDION.US IDION INC. 12 Plymouth Dr. Darien CT, 06820 Made In The USA Serial #: iTemp Shield Module DPG DPG CS TB 7/27/22 7/27/22 7/27/22 7/27/22 2” (51mm) X 2” (51mm) White Label Stock Notes: 1. 8pt Myriad Font. 2. Font color Black DESIGN-LBL-00001 FCC ID: 2A8QA-ITEMPS .X +/- .75, .XX +/- .5, .XXX +/- .25 X DEGREES +/- 1 DEGREE IP 57 01 Expires on: xx/xx/xxxx

4 3 2 1 6 5 7 10 WORK INSTRUCTIONS TO BE MADE BY MANUFACTURER - CRITICAL STEPS TO BE LISTED ON THIS DRAWING REV.DESCRIPTIONDATEAPRROVED 01INITIAL RELEASE5/26/2022DPG 02ADD ITEM 107/18/2022DPG 03ADDED SHEET 3 AND EPOXY STEP12/7/2022DPG ITEM NO.PART NUMBERDESCRIPTIONQTY. 1DESIGN-ASM-00100 PCB ASSEMBLY, TEMP SHIELD MODULE 1 2DESIGN-COM-00029BATTERY, TEMP SHIELD MODULE1 3DESIGN-COM-00003FRAME, TEMP SHIELD MODULE1 4DESIGN-COM-00002IDION DECAL, TEMP SHIELD MODULE1 5DESIGN-ASM-00001 INNER SEAL ASSEMBLY, TEMP SHIELD MODULE 1 6DESIGN-ASM-00002FOAM FILLER, TEMP SHIELD MODULE1 7DESIGN-COM-00005PCB PSA, TEMP SHIELD MODULE1 8DESIGN-COM-00028 THERMAL PASTE, 20MG PER ASSEMBLY 1 10DESIGN-COM-00006TEMP SENSOR HEAT PIPE1 11DESIGN-COM-000643M EPOXY DP1001 8 8 D C B A 7 6 5 4 3 2 1 A B C D 1 2 3 4 5 6 7 ALL SURFACES TOLERANCES ARE: .X ± .75 .XX ± .5 .XXX ± .25 X° ± 1° UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MM ASSEMBLY, TEMP SHIELD MODULE 5/26/2022 DATE SIZE DATEDRAWN BY THIRD ANGLE PROJECTION B DPG HGRAY SCALE 1.5:1SHEET 1 of 4 DESCRIPTION CHECKED BY PART NUMBER THIS DRAWING, IN TOTAL OR IN PART, IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ONLY ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED BY, COPIED BY, OR COMMUNICATED TO, ANY OTHER PERSON WITHOUT WRITTEN AUTHORIZATION FROM SUNRISE LABS, INC 25 CONSTITUTION DRIVE, BEDFORD, NH 03110 PROJECT CODE DESIGN-ASM-00009-02 IDND CCR No:CR2022127 , DocFolder Id:Design-ASM-00009 , Revision:2 , Version:A , Current Status:Released and EFFECTIVE Effective Date:21-Dec-2022 Report generated by: JoshSapers, on Thu Jan 05 12:34:05 EST 2023 Copyright 2023 by Qualcy Systems Inc. All Rights Reserved 1 6 7 ENSURE THAT DESIGN- COM-00005 IS ORIENTED SUCH THAT THE ADHESIVE CLEARS THE BATTERY STRAP AND THE CYLINDER ON THE PCB APPLY THERMAL PASTE (DESIGN-COM-00028) TO EXPOSED TEMPERATURE SENSOR. FILL FOAM CAVITY AROUND HEAT PIPE (DESIGN-COM-00006). ENSURE THAT DESIGN-ASM-00002 IS ORIENTED SUCH THAT THE TEMPERATURE SENSOR ON PCB IS EXPOSED THROUGH THE SQUARE HOLE 6 1 9 10 SLIDE BATTERY (DESIGN-COM- 00029) UNDER BATTERY STRAP (DESIGN-COM-00001) AFTER ADHESIVE (DESIGN-COM-00005) HAS BEEN APPLIED AND RELEASE LINER REMOVED 2 APPLY THERMAL PASTE (DESIGN-COM-00029) TO EXPOSED TEMPERATURE SENSOR AFTER INSERTION INTO SILICONE FRAME (DESIGN-COM-00003) AND FILL CAVITY. 8 8 D C B A 7 6 5 4 3 2 1 A B C D 1 2 3 4 5 6 7 Assembly, Temp Shield Module SIZE B 03 DESIGN-ASM-00009 IDND SCALE 3:1 SHEET 2 of 4 REV DESCRIPTION PART NUMBER THIS DRAWING, IN TOTAL OR IN PART, IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ONLY ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED BY, COPIED BY, OR COMMUNICATED TO, ANY OTHER PERSON WITHOUT WRITTEN AUTHORIZATION FROM SUNRISE LABS, INC 25 CONSTITUTION DRIVE, BEDFORD, NH 03110 CLIENT CODE CCR No:CR2022127 , DocFolder Id:Design-ASM-00009 , Revision:2 , Version:A , Current Status:Released and EFFECTIVE Effective Date:21-Dec-2022 Report generated by: JoshSapers, on Thu Jan 05 12:34:05 EST 2023 Copyright 2023 by Qualcy Systems Inc. All Rights Reserved NO EPOXY ABOVE THIS SURFACE FILL CAVITY WITH DESIGN- COM-00064 FILL CAVITY WITH DESIGN- COM-00064 3 8 8 D C B A 7 6 5 4 3 2 1 A B C D 1 2 3 4 5 6 7 ALL SURFACES TOLERANCES ARE: .X ± .75 .XX ± .5 .XXX ± .25 X° ± 1° UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MM ASSEMBLY, TEMP SHIELD MODULE 5/26/2022 DATE SIZE DATEDRAWN BY THIRD ANGLE PROJECTION B DPG HGRAY SCALE 2:1SHEET 3 of 4 DESCRIPTION CHECKED BY PART NUMBER THIS DRAWING, IN TOTAL OR IN PART, IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ONLY ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED BY, COPIED BY, OR COMMUNICATED TO, ANY OTHER PERSON WITHOUT WRITTEN AUTHORIZATION FROM SUNRISE LABS, INC 25 CONSTITUTION DRIVE, BEDFORD, NH 03110 PROJECT CODE DESIGN-ASM-00009-02 IDND CCR No:CR2022127 , DocFolder Id:Design-ASM-00009 , Revision:2 , Version:A , Current Status:Released and EFFECTIVE Effective Date:21-Dec-2022 Report generated by: JoshSapers, on Thu Jan 05 12:34:05 EST 2023 Copyright 2023 by Qualcy Systems Inc. All Rights Reserved ENSURE THAT OUTER PERIMETER OF DESIGN- ASM-00001 FALLS WITHIN OUTER PERIMETER OF DESIGN-COM-00003 5 ENSURE THAT OUTER PERIMETER OF DESIGN-COM-00002 FALLS WITHIN RECESS OF DESIGN-COM-00003 4 3 8 8 D C B A 7 6 5 4 3 2 1 A B C D 1 2 3 4 5 6 7 Assembly, Temp Shield Module SIZE B 03 DESIGN-ASM-00009-03 SCALE 2:1 SHEET 4 of 4 REV DESCRIPTION PART NUMBER THIS DRAWING, IN TOTAL OR IN PART, IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ONLY ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED BY, COPIED BY, OR COMMUNICATED TO, ANY OTHER PERSON WITHOUT WRITTEN AUTHORIZATION FROM SUNRISE LABS, INC 25 CONSTITUTION DRIVE, BEDFORD, NH 03110 CLIENT CODE CCR No:CR2022127 , DocFolder Id:Design-ASM-00009 , Revision:2 , Version:A , Current Status:Released and EFFECTIVE Effective Date:21-Dec-2022 Report generated by: JoshSapers, on Thu Jan 05 12:34:05 EST 2023 Copyright 2023 by Qualcy Systems Inc. All Rights Reserved

Project number: EW0409 FCC ID: 2A8QA-ITEMPS Date: 2023-01-17 Issue 2 Page 1 of 3 Internal Photos Internal Ambient Side with Battery Project number: EW0409 FCC ID: 2A8QA-ITEMPS Date: 2023-01-17 Issue 2 Page 2 of 3 Internal Ambient Side Project number: EW0409 FCC ID: 2A8QA-ITEMPS Date: 2023-01-17 Issue 2 Page 3 of 3 Internal Skin Side

Bureau Veritas Consumer Product Services, Inc. Test Report Number: One Distribution Center Circle #1, Littleton, MA 01460 EW0409-3 Issue 3 Page 1 of 6 Template Version 2022-07-19 CFR Title 47 FCC Part 2.1093 Report Exhibit Prepared for Idion Inc. This report presents the environmental impact of human exposure to radiofrequency radiation for DWF-01824 iTempShield Wearable Thermometer Prepared by Haiyan Xu Wireless Engineer Approved by Yunus Faziloglu Wireless Manager Issue date: Jan 26, 2023 Report No: EW0409-3 Issue 3 This test result relates only to the described test object. This document shall not be reproduced, except in full, without the written approval of Bureau Veritas Test Lab. Customer must not use this test report as the product certification of each accreditation body or each national organization. The test is traceable to national standard or related international standard Bureau Veritas Consumer Product Services, Inc. Test Report Number: One Distribution Center Circle #1, Littleton, MA 01460 EW0409-3 Issue 3 Page 2 of 6 Template Version 2022-07-19 Contents • Test Request Information ................................................................................................................................3 • Test Laboratory Information ............................................................................................................................4 • RF Exposure ....................................................................................................................................................5 Bureau Veritas Consumer Product Services, Inc. Test Report Number: One Distribution Center Circle #1, Littleton, MA 01460 EW0409-3 Issue 3 Page 3 of 6 Template Version 2022-07-19 1 Device Under Test Information 1.1 Product Information Project Number: W0409 Applicant Information: Idion Inc. 12 Plymouth Rd. Darien, Connecticut 06820 USA Test Item Description: iTempShield Wearable Thermometer Model Number: DWF-01824 DUT Sample Number: N/A Hardware Version of DUT: N/A Software Version of DUT: N/A Separation Distance: 0mm Exposure Category of DUT: Portable Multiple Simultaneous RF Sources: No Type of Test: FCC RF Exposure Exemption Evaluation Test Method: CFR Title 47 FCC Part 1.1307(b)(3) Deviations from Standard: None Sample Receipt Date: 2022-10-04 Evaluation Date: 2022-11-21 1.2 Technical Information FCC ID: 2A8QA-ITEMPS Exposure Category of Transmitter: Portable Maximum Conducted Output Power (dBm): 0.2 dBm Maximum Tune-up Tolerance (dB): N/A Maximum Antenna Gain (dBi): 5.3 dBi Bureau Veritas Consumer Product Services, Inc. Test Report Number: One Distribution Center Circle #1, Littleton, MA 01460 EW0409-3 Issue 3 Page 4 of 6 Template Version 2022-07-19 2 Test Laboratory Information Location of Test Lab: One Distribution Center Circle #1 Littleton, MA 01460 (978) 486-8880 Key Contact: Yunus Faziloglu [email protected] Laboratory Accreditations: BUREAU VERITAS CONSUMER PRODUCTS SERVICES, INC is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. ISO/IEC 17025:2017: 1627-01 FCC Test Site Number: US1028 Bureau Veritas Consumer Product Services, Inc. Test Report Number: One Distribution Center Circle #1, Littleton, MA 01460 EW0409-3 Issue 3 Page 5 of 6 Template Version 2022-07-19 3 RF Exposure – Determination of Exemption 3.1 SAR-based Exemption 3.1.1 Conclusion The DWF-01824 manufactured by Idion Inc. meets the exemption criteria for the environmental impact of human exposure to radiofrequency radiation using the calculations performed herein. SAR Test Exclusion Thresholds for Portable Devices, 100 MHz < f < 6 GHz Equation from page 12 of KDB 447498 D01 v06 Max power of channel, including tune-up tolerance:1.05(mW) Min test separation distance:5 (mm) Prediction frequency:2.402(GHz) Result of calculation:0.325466 Threshold for 1-g SAR:3 Threshold for 3-g SAR:7.5 Bureau Veritas Consumer Product Services, Inc. Test Report Number: One Distribution Center Circle #1, Littleton, MA 01460 EW0409-3 Issue 3 Page 6 of 6 Template Version 2022-07-19 Document Revisions Issue No. Summary of Changes Date Issued Prepared by Approved by 1 Original Release Nov 21, 2022 HX YF 2 Add separation distance in section 1.1 (p3); Correct antenna gain from 0dBi to 5.3dBi Jan 9, 2023 HX YF 3 Corrected conducted output power used in the calculation Ja n 26, 2023 RB YF End of Report

Application Note AN043 Small Size 2.4 GHz PCB antenna By Audun Andersen 1 KEYWORDS • CC25xx • CC24xx • CC2480 • PCB antenna • USB dongle • 2.4 GHz • Inverted F Antenna 2 INTRODUCTION The PCB antenna used on the CC2511 USB dongle reference design is described in this application note. Even if the antenna presented is for a USB dongle design it can be used in all 2.4 GHz designs, especially where small space is required for the antenna. This application note describes the antenna dimensions, the RF performance and considerations for complying with regulatory limits when using this design. The suggested antenna design requires no more than 15.2 x 5.7 mm of space and ensures a VSWR ratio of less than 2 across the 2.4 GHz ISM band when connected to a 50 ohm source. Figure 1: CC2511 USB Dongle SWRA117D Page 1 of 21 Application Note AN043 Table of Contents 1 KEYWORDS...................................................................................................................1 2 INTRODUCTION.............................................................................................................1 3 ABBREVIATIONS...........................................................................................................2 4 ANTENNA DESIGN........................................................................................................3 4.1 DESIGN GOALS..........................................................................................................3 4.2 SIMULATION...............................................................................................................3 4.3 LAYOUT AND IMPLEMENTATION...................................................................................4 5 TEST RESULTS.............................................................................................................5 5.1 REFLECTION..............................................................................................................5 5.2 RADIATION PATTERN..................................................................................................7 5.3 OUTPUT POWER......................................................................................................15 5.4 SPURIOUS EMISSION AND HARMONICS......................................................................17 6 CONCLUSION ..............................................................................................................20 7 GENERAL INFORMATION..........................................................................................21 7.1 DOCUMENT HISTORY................................................................................................21 3 ABBREVIATIONS CAD Computer Aided Design CC24xx CC2400, CC2420, CC2430 and CC2431 CC25xx CC2500, CC2510, CC2511, CC2550 and CC2520 CC2480 Z-Accel ZigBee Processor IFA Inverted F Antenna ISM Industrial, Scientific and Medical LOS Line Of Sight PCB Printed Circuit Board PER Packet Error Rate VSWR Voltage Standing Wave Ratio SWRA117D Page 2 of 21 Application Note AN043 4 ANTENNA DESIGN The PCB antenna on the CC2511 USB dongle reference design is a meandered Inverted F Antenna (IFA). The IFA was designed to match an impedance of 50 ohm at 2.45 GHz. Thus no additional matching components are necessary. 4.1 Design Goals The reflection at the feed point of the antenna determines how much of the applied power is delivered to the antenna. A reflection of less than -10 dB across the 2.4 GHz ISM band, when connected to a 50 ohm source, was a design goal. Reflection of less than -10 dB, or VSWR less than 2, ensures that more than 90% of the available power is delivered to the antenna. Bandwidth is in this document defined as the frequency band where more than 90% of the available power is delivered to the antenna. Another design goal was to fit the size of the PCB antenna on a USB dongle and to obtain good performance also when the dongle is connected to a computer. 4.2 Simulation IE3D from Zeland, which is an electromagnetic simulation tool, was used to design the antenna. The accuracy of the simulation is controlled by the mesh. An increase of the mesh increases the simulation time. Thus, for initial simulations mesh = 1 should be used. When a fairly good result is achieved a higher mesh should be used to obtain more accurate results. Comparison of simulation and measurement results shows that the measured reflection is between the result obtained with mesh = 5 and mesh = 1; see Figure 2 for details. Figure 2: Comparison of Simulation and Measurements Results SWRA117D Page 3 of 21 Application Note AN043 4.3 Layout and Implementation Small changes of the antenna dimensions may have large impact on the performance. Therefore it is strongly recommended to make an exact copy of the reference design to achieve optimum performance. The easiest way to implement the antenna is to import the gerber or DXF file showing the antenna layout. These files are named IFA_USB.spl and IFA_USB.dxf respectively and are included in the CC2511 USB d…

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