FCC ID: 2ASFFAC021 KardiaMobile Card with BLE Functionality

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AliveCor, Inc. Confidential Instructions for Use (IFU) for KardiaMobile Card (AC-021) 21LB01.X2 April 2021 AliveCor, Inc. 444 Castro Street, 6th Floor, Mountain View, CA 94041, USA 2021 AliveCor, Inc. AliveCor and KardiaMobile are registered trademarks of AliveCor, Inc. in the United States and other jurisdictions. AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Setting up your KardiaMobile Card device for the first time Table of Contents Introduction Guide to Parts Warnings and Precautions Indications For Use Features & Functionality Recording an EKG EKG Analysis Heart Rate Environmental Specifications Expected Service Life Maintenance Device Disposal Electromagnetic & Other Interferences FCC Compliance Ingress Protection Marking Applied Parts Troubleshooting Electrical Safety Equipment Symbols 3 4 4 6 6 7 7 8 10 10 10 10 11 11 11 12 12 12 14 17 Page 2 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) KardiaMobile Card Introduction 1. KardiaMobile Card is a personal EKG device that records your EKG and wirelessly transmits the data to the Kardia app installed on your smartphone or tablet. a. Contains two electrodes on the top surface, for use with the left and right hands. b. Powered by a non-replaceable battery. c. Bluetooth wirelessly transmits EKG data to your smartphone or tablet. 2. KardiaMobile Card is capable of recording a Single-Lead EKG that provides a single view of the hearts electrical activity. 3. An instant algorithmic analysis (Instant Analysis) of your heart rhythm is provided upon completion of your EKG recording. See the EKG Analysis section for more details. 4. KardiaMobile Card requires a compatible smartphone or tablet and the Kardia app. a. The list of compatible devices can be viewed at www.alivecor.com/compatibility. b. The Kardia app can be downloaded in the App Store or the Google Play Store. 5. The KardiaMobile Card System does not require a Wi-Fi or mobile data connection to record an EKG and save it to the devices local memory; it does require a connection to sync automatically with the AliveCor server, email, or print directly from the Kardia app. If you do not have a Wi-Fi or mobile data connection at the time of the EKG recording, you may email or print the data later when you have such a connection, and the sync will happen automatically at that time. Page 3 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Guide to Parts FRONT VIEW BACK VIEW Warnings and Precautions 1. AliveCor does not guarantee that you are not experiencing an arrhythmia or other health conditions with any EKG result, including normal. You should notify your physician for possible changes in your health or if you are experiencing any concerning symptoms. 2. Chest pain or pressure is a medical emergency. Heart disease and heart attack can occur in the presence of any EKG result. Contact a physician or emergency services if you are experiencing any symptoms or have concerns. Page 4 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) 3. Use this device to record heart rate and heart rhythm only. 4. Do not use this device to diagnose heart-related conditions. 5. KardiaMobile Card does not check for heart attack. 6. Detection of possible Atrial Fibrillation (AF) in your EKG results are not to be used for diagnosis. 7. Result of "Bradycardia" or "Tachycardia" are designations of heart rate in the absence of AF, and are not to be used for diagnosis. Please consult with your physician should you receive consistent identifications of "Bradycardia" or "Tachycardia". Unreadable EKG result determines that you didn't have proper EKG recording for analysis. You may try to re-record your EKG. 8. 9. Do not use to self diagnose heart related conditions. Consult with your physician before making any medical decision, including altering your use of any drug or treatment. Do not change or adjust your medication without talking to your doctor.

10. Do not continue use until further instructed by a physician if your skin is irritated or inflamed around the electrode contact area. 11. AliveCor makes no warranty for any data or information that is collected erroneously by the device, or misuse or malfunction as a result of abuse, accidents, alteration, misuse, neglect, or failure to maintain the products as instructed. Interpretations made by this device are potential findings, not a complete diagnosis of cardiac conditions. All interpretations should be reviewed by a medical professional for clinical decision-making. 12. The device has not been tested for and is not intended for pediatric use. 13. Device contains a lithium manganese dioxide battery that is not removable or replaceable. 14. Do not use the electrode on a portion of the body with too much body fat, body hair or very dry skin, as a successful recording may not be possible. 15. Do not take a recording while driving or during physical activity. 16. Do not store in extremely hot, cold, humid, wet, or bright conditions. 17. Do not take a recording if electrodes are dirty. Clean them first (see cleaning instructions 18. Do not use abrasive cleaners and materials as these products could adversely affect under Maintenance section). product performance. 19. Do not immerse device or expose device to excessive liquid. 20. Do not use while charging your phone. 21. Do not drop or bump with excessive force. 22. Do not expose to strong electromagnetic fields. Do not take recordings when the device is in close vicinity to strong electromagnetic fields (e.g. electromagnetic anti-theft systems, metal detectors). 23. Do not expose the device to a magnetic resonance (MR) environment. 24. Do not use with a cardiac pacemaker, ICDs, or other implanted electronic devices. 25. Do not use during a medical procedure (e.g. magnetic resonance imaging, diathermy, lithotripsy, cautery and external defibrillation procedures). 26. Do not place electrodes in contact with other conductive parts including earth. 27. Do not use with un-approved accessories. Use of non-AliveCor approved accessories or transducers and cables could result in electromagnetic emissions or decreased electromagnetic immunity of this device and result in improper operation. Page 5 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) 28. Do not use adjacent to or stacked with other equipment because it could result in improper operation. 29. Do not use portable RF communications equipment (including peripherals such as antenna cables and external antennas) closer than 30 cm (12 inches) to any part of the KardiaMobile Card System. Otherwise, degradation of the performance of the KardiaMobile Card System could result. 30. Do not take a recording during physical activity. 31. After EKG analysis, the app may incorrectly identify ventricular flutter as Unreadable. Contact a physician if you are experiencing any symptoms or have concerns. Indications For Use The KardiaMobile Card System is intended to record, store and transfer single-channel electrocardiogram (ECG/EKG) rhythms. The KardiaMobile Card System also displays ECG rhythms and output of ECG analysis from AliveCors KardiaAI platform including detecting the presence of normal sinus rhythm, atrial fibrillation, bradycardia, tachycardia, and others. The KardiaMobile Card System is intended for use by healthcare professionals, patients with known or suspected heart conditions and health conscious individuals. The device has not been tested and is not intended for pediatric use1. Features & Functionality KardiaMobile Card is a personal EKG device that is capable of recording a Single-Lead EKG. It has two electrodes on the top surface and is powered by a non-replaceable battery. Bluetooth is used to wirelessly transmit EKG data from the device to your smartphone or tablet. What is an EKG?

Also known as an electrocardiogram or ECG, an EKG is a test that detects and records the strength and timing of the electrical activity in your heart. Each heartbeat is triggered by an electrical impulse. Your EKG represents the timing and strength of these impulses as they travel through your heart. Single-lead EKG A Single-Lead EKG is the simplest way to record your heart rhythm. It measures a single view of the heart. It is taken by laying the device on a flat surface near your smartphone and placing fingers from the left and right hand on the top two electrodes of the device. This is comparable to Lead I on standard EKG machines used in the hospital or doctors office. 1 Pediatric use is defined as 21 years and under Page 6 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Setting up your KardiaMobile Card device for the first time 1. Remove your KardiaMobile Card device from the packaging. 2. Download the Kardia app from the App Store or Google Play Store. o Be sure to use a compatible iOS or Android device (check the compatible device list at www.alivecor.com/compatibility). 3. Make sure Bluetooth is turned on in your smartphone or tablet settings. 4. Launch the Kardia app and tap "Create Account". 5. Follow the on-screen instructions to complete your account setup. Recording an EKG 1. Open the app and tap "Record your EKG". 2. If this is your first time using the KardiaMobile Card, follow the on-screen instructions to set up and choose your device. 3. Pick up the KardiaMobile Card using your index finger and thumb; and press the power button using your thumb. Page 7 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) 4. Lay the device on a flat surface. Make sure the device is in the correct orientation with the AliveCor logo and brand name KardiaMobile in the top left. 5. When ready, place a finger or the thumb from each hand on the top two electrodes. There's no need to squeeze or press down firmly. 6. The app will indicate when you have good contact as you begin your recording. 7. Hold still as you watch the timer count down from 30 seconds, until your EKG recording is complete. 8. The device will turn off automatically after use. EKG Analysis Upon completion of your EKG recording the EKG is processed by AliveCors Instant Analysis algorithms in the Kardia app. The app will display your full EKG and the Instant Analysis result with description. All possible Instant Analysis results, descriptions, and additional information are displayed in the table below:

Instant Analysis Description Additional information Possible Atrial Fibrillation Your EKG shows signs of atrial fibrillation. Kardia does not check for heart attack. If you believe you are having a medical emergency, call emergency services. Do not change your medication without talking to your doctor. Page 8 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Instant Analysis Description Additional information Bradycardia Your heart rate is less than 50 beats per minute, which is slower than normal for most people. Normal No rhythm abnormalities detected in your EKG. Tachycardia Your heart rate is faster than 100 beats per minute. This can be normal with stress or physical activity. Kardia does not check for heart attack. If you believe you are having a medical emergency, call emergency services. Do not change your medication without talking to your doctor. Kardia does not check for heart attack. If you believe you are having a medical emergency, call emergency services. Do not change your medication without talking to your doctor. Kardia does not check for heart attack. If you believe you are having a medical emergency, call emergency services. Do not change your medication without talking to your doctor. No Analysis Unclassified Your EKG recording is of insufficient duration. Instant Analysis is not able to provide an analysis on EKG recordings shorter than 30 seconds. Record a new EKG. Try to relax and hold still, rest your arms, or move to a quiet location that will allow for a full 30 second recording. Atrial fibrillation was not detected and your EKG does not fall under the algorithmic classifications of Normal, Bradycardia, or Tachycardia. This may be caused by other arrhythmias, unusually fast or slow heart rates, or poor quality recordings. Kardia does not check for heart attack. If you believe you are having a medical emergency, call emergency services. Do not change your medication without talking to your doctor. Unreadable There is too much interference in this recording. Please re-record the EKG. Try to relax and hold still, rest your arms, or move to a quiet location or away from electronics and machinery. WARNING: After EKG analysis, the app may incorrectly identify ventricular flutter, ventricular bigeminy, and ventricular trigeminy heart conditions as unreadable. Please consult with your physician. NOTE: All historical EKGs and Instant Analysis results can be viewed, downloaded, and emailed from the History section of the Kardia app. EKG reports viewed at any magnification other than 100% may appear distorted and could lead to misdiagnosis. Page 9 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Heart Rate During your EKG recording, your real-time heart rate will be shown. When reviewing previous EKGs, the average heart rate taken during that recording is displayed. Heart rate is calculated as the time interval between consecutive heart beats; or more specifically as the inverse of the time interval between consecutive R-waves in your QRS complex. During an EKG recording, the current heart rate is measured from an average of this inverse calculation over the last 5 seconds. For stored EKGs, the average heart rate is the average of this inverse calculation over the entire 30 seconds of the recording. Environmental Specifications Operational Temperature:

Operational Humidity:

Storage Temperature:

Storage Humidity:

Atmospheric Pressure:

-10C to +40C Up to 95% (non-condensing)

+0C to +40C Up to 95% (non-condensing) 76 to 101 kPa Expected Service Life The expected service life for the KardiaMobile Card is 2 years. Maintenance 1. No service or repair should be performed on the KardiaMobile Card device other than the maintenance listed in this section. To clean the device, wipe with a soft cloth damp with one of the following approved cleaners:

a. Soap and water, b. 70% isopropanol or ethanol alcohol, or c. 0.55% bleach You may also use a pre-prepared wipe with one of the approved cleaners listed above. After cleaning, allow the device to dry before using or placing it back in any storage containers. WARNING:

product performance. Do not use abrasive cleaners and materials as these products could adversely affect Page 10 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Do not immerse device or expose device to excessive liquid. 2. Exterior Visual Inspection:

Inspect electrodes for warping, surface damage, or corrosion Check for any other form of damage Device Disposal Do not dispose of the device with household waste. Dispose of the device according to applicable local regulations. Unlawful disposal may cause environmental pollution. Do not cut, shred or attempt to destroy device. Electromagnetic & Other Interferences KardiaMobile Card has been tested and deemed in conformance with the relevant requirements in IEC 60601-1-2:2014 (+A1:2020) Class B for Electromagnetic Compatibility (EMC). FCC and Industry Canada (IC) Compliance FCC ID: 2ASFFAC021 IC: 25747-AC021 This device complies with Part 15 of the FCC Rules and with Industry Canadas license-exempt RSSs. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. CAUTION: Changes or modifications not expressly approved by AliveCor could void your authority to use this equipment. To view FCC and IC information on the Kardia app:

1. On the home screen, tap to access your profile. 2. From the profile tap to access the Kardia app Settings. 3. Tap About Kardia to view the FCC and IC IDs and other applicable regulatory information. Page 11 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Ingress Protection Marking KardiaMobile Card is IPx8 rated. KardiaMobile Card is protected against immersion in water up to 2 meters for 1 hour. KardiaMobile Card has been tested with relevant requirement standard IEC 60601-1-11:2015 (+A1:2020). Applied Parts The 2 electrodes (Left Hand Electrode and Right Hand Electrode) are Type BF Applied Parts. Operational temperature of the device is -10C to +40C. If ambient temperature exceeds

+41C, Applied Parts can exceed +41C. Troubleshooting If you experience difficulties using your KardiaMobile Card, refer to the troubleshooting guide below or contact technical support at support@alivecor.com. 1. My KardiaMobile Card is not working. Make sure the Kardia app on your phone is open, the KardiaMobile Card device is selected and is ready to pair. Make sure the amber LED light turns on when you press the white power button (located inside the A symbol on the right corner of the KardiaMobile Card). Hold the card between your thumb and index finger with your thumb on the front of the device over the power button thumb until you see the LED solid light or blinking light (you may also hear a click). A blinking LED light indicates that the device is trying to establish a connection with your phone/tablet. If the light does not turn on the battery could be depleted. Press down firmly with your If the amber light does turn on:

Make sure Bluetooth is turned on in your smartphone or tablet settings and follow the steps on your screen. If Bluetooth is on, try to un-pair and pair again to your KardiaMobile Card. 2. I'm having trouble getting a clear recording. o Clean the electrodes using a damp soft cloth. Wash your hands with soap and water. Use a small amount of water to moisten the skin where your fingers make contact with the electrodes. Page 12 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) o When recording, relax your arms and hands to reduce muscle noise. Rest the forearms and hands on a at surface. Do not apply too much pressure to the electrodes. Avoid close proximity to items that may cause electrical interference (electronic equipment, computers, chargers, routers, etc.) If you wear hearing aids, turn them off prior to recording. Ensure that your smartphone or tablet is not charging/syncing and you are not using headphones with your smartphone or tablet during the recording. Ensure that the Enhanced Filter is on. Make sure Mains Filter is set appropriately for your geographical location. This can be adjusted under the Kardia app Settings 3. On my EKG, the recording appears upside down. Make sure the device is in the correct orientation with the AliveCor logo and brand name KardiaMobile in the top left. On the EKG tracing, select the Invert option to flip the orientation of the EKG. 4. I see large spikes at the start of my recording Large amounts of noise/artifact can be seen for the first few milliseconds of a recording when the Enhanced Filter is looking for your heartbeat. This is very rare and only lasts until your first heartbeat is seen in the app; this doesnt affect the rest of your recording. Page 13 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Electrical Safety RF emissions CISPR 11 RF emissions CISPR 11 Harmonic emissions IEC 61000-3-2 Voltage fluctuations /

flicker emissions IEC 61000-3-3 Group 1 Class B N/A N/A Guidance and manufacturer's declaration - electromagnetic emissions KardiaMobile Card is intended for use in the electromagnetic environment specified below. The customer or the user of KardiaMobile Card should assure that it is used in such an environment. Emissions test Compliance Electromagnetic environment - guidance KardiaMobile Card uses RF energy only for its internal function. RF emissions are very low and are not likely to cause any interference in nearby electronic equipment. KardiaMobile Card is intended for use in domestic surroundings. KardiaMobile Card is powered from a lithium manganese dioxide battery and does not require AC mains power Guidance and manufacturers declarationelectromagnetic immunity KardiaMobile Card is intended for use in the electromagnetic environment specified below. The customer or the user of KardiaMobile Card should assure that it is used in such an environment. IEC 60601 test level 2 kV contact 4 kV contact 6 kV contact 8 kV contact 2 kV air 4 kV air 8 kV air 15 kV air Compliance level 2 kV contact 4 kV contact 6 kV contact 8 kV contact 2 kV air 4 kV air 8 kV air 15 kV air Electromagnetic environment -

guidance Floors should be wood, concrete, or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%. N/A N/A N/A N/A N/A N/A 30 A/m 30 A/m KardiaMobile Card is powered from a lithium manganese dioxide battery and does not require AC mains power. Power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or hospital environment. Page 14 of 17 Immunity test Electrostatic Discharge

(ESD) IEC 61000-4-2 Electrical fast transient/burst IEC 61000-4-4 Surge IEC 61000-4-5 Voltage dips, short interruptions, and voltage variations on power supply input lines IEC 61000-4-11 Power frequency

(50/60 Hz) magnetic field IEC 61000-4-8 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Guidance and manufacturers declarationelectromagnetic immunity KardiaMobile is intended for use in the electromagnetic environment specified below. The customer or the user of KardiaMobile Card should assure that it is used in such an environment. Immunity test IEC 60601 test level Compliance level Electromagnetic environment - guidance Radiated RF IEC 61000-4-3 10 V/m 80 MHz to 2.7 GHz 10 V/m Portable and mobile RF communications equipment should be used no closer to any part of KardiaMobile Card, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter. Recommended separation distance

< 80MHz 80 MHz to 800 MHz 800 MHz to 2.7 GHz where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer and d is the recommended separation distance in meters (m). Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, a should be less than the compliance level in each frequency range. b Interference may occur in the vicinity of equipment marked with the following symbol:

NOTE 1At 80 MHz and 800 MHz, the higher frequency range applies. NOTE 2These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people a Field strength from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast, and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which KardiaMobile Card is used exceeds the applicable RF compliance level above, KardiaMobile Card should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating KardiaMobile Card. b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m. Page 15 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Recommended separation distances between portable and mobile RF communications equipment and KardiaMobile Card KardiaMobile Card is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of KardiaMobile Card can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and KardiaMobile Card as recommended below, according to the maximum output power of the communications equipment. Separation distance according to frequency of transmitter m 150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz Rated maximum output power of transmitter W 0.01 0.1 1 10 100 0.12 0.38 1.2 3.8 12 0.12 0.38 1.2 3.8 12 0.23 0.73 2.3 7.3 23 For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be determined using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer. NOTE 1At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies. NOTE 2These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people. Page 16 of 17 AliveCor, Inc. Confidential Instructions for Use for KardiaMobile Card (AC-021) Equipment Symbols These symbols may be used in the packaging and other labeling of the KardiaMobile Card device:

Symbol Interpretation Symbol Interpretation Manufacturer Read instructions before use Temperature range Refer to instruction manual/booklet Do not dispose with household waste Do not cut, shred or attempt to destroy device Humidity range Model number Atmospheric pressure range Type BF Applied Part Serial number IPx8 Protected against immersion in water up to 2 meters for 1 hour 2021 AliveCor, Inc. All rights reserved. Page 17 of 17 AliveCor, Inc. Confidential Signature Manifest Document Number: 21LB01 Title: KardiaCard Instructions For Use (IFU) Revision: X2 All dates and times are in Pacific Standard Time. 21LB01 KardiaMobile Card IFU Rev X2 (pre-prod.) Name/Signature Title Date Meaning/Reason Shani Frenkel (SFRENKEL) Regulatory Affairs Manager 30 Mar 2021, 11:23:43 PM Approved Change Request Regulatory Affairs Marketing Clinical Program Management Quality Set Effective Date Name/Signature Title Date Meaning/Reason Saket Bhatt (SBHATT) VP, RAQA-(MR) Shani Frenkel (SFRENKEL) Regulatory Affairs Manager 08 Apr 2021, 10:47:15 PM Approved Name/Signature Title Date Meaning/Reason Amy Speed (ASPEED) Physician Marketing Manager 08 Apr 2021, 09:41:23 AM Approved Name/Signature Title Date Meaning/Reason Aman Bhatti (ABHATTI) VP, Biopharma Clinical David Albert (DALBERT) Founder, Chief Scientist 08 Apr 2021, 10:08:18 AM Approved Name/Signature Title Date Meaning/Reason Baru Lopez (BLOPEZ) Dir,Tech Prog Mgmt Josef Friedmann (JFRIEDMANN) Engineering Program Manager 08 Apr 2021, 08:46:56 AM Approved Name/Signature Title Date Meaning/Reason Saket Bhatt (SBHATT) VP, RAQA-(MR) Nidhi Sullivan (NSULLIVAN) Quality Manager 09 Apr 2021, 09:22:56 AM Approved Name/Signature Title Date Meaning/Reason Tasneem Alichi (TALICHI) Quality Systems Manager Terry Medina (TMEDINA) Quality Sys/DC Specialist 09 Apr 2021, 09:26:35 AM Approved AliveCor, Inc. Confidential

Exhibit: FCC ID label format and label location Replace XXXXXXXX with:

FCC ID: 2ASFFAC021 ISED ID: 25747-AC021 Location: The FCC ID and ISED ID are located on the back of the card on the top right portion along with other identifying information.

444 Castro St., Suite 600 T 650.396.8650 Mountain View, CA 94041 F 650.396.8649 2ASFFAC021 Request for Confidentiality Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject:

FCC ID:

To Whom It May Concern:

Pursuant to the provisions of Sections 0.457 and 0.459 of the Commissions rules (47 CFR 0.457, 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. Schematic Diagram Block Diagram Theory of Operation 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 additional to above mentioned documents, pursuant to Public Notice DA 04-1705 of the Commissions policy, in order to comply with the marketing regulations in 47 CFR 2.803 and the importation rules in 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices. We are requesting the commission to grant short-term confidentiality request on the following attachments until 1st October, 2021:

External Photos Internal Photos Test Setup Photos User Manual 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. DocuSign Envelope ID: D5F52B96-B236-4A64-ADB7-C5C07F89E764 Best Regards Saket Bhatt VP, RAQA AliveCor, Inc. 12 April 2021 DocuSign Envelope ID: D5F52B96-B236-4A64-ADB7-C5C07F89E764

444 Castro St., Suite 600 T 650.396.8650 Mountain View, CA 94041 F 650.396.8649 Date: 12th April 2021 Federal Communications Commission Equipment Authorization branch 7435 Oakland Mills Road Columbia, MD 21046 To whom it may concern:

I, the undersigned, hereby authorize UL Verification Services Inc. 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 UL Verification Services Inc. 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 UL Verification Services Inc. as our representative, we still recognize that we are responsible to:

a) b) c) d) e) comply with the relevant provisions of the certification program;

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;

make claims regarding certification only in respect of the scope for which certification has been granted;

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;

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;

DocuSign Envelope ID: D5F52B96-B236-4A64-ADB7-C5C07F89E764 444 Castro St., Suite 600 T 650.396.8650 Mountain View, CA 94041 F 650.396.8649 f) use certification only to indicate the products are certified as being in conformity with specified standards;

endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner;

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;

keep a record of all complaints made known to the us relating to the products compliance with requirements of the relevant standard and to make these records available to the when requested;

take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification;

g) h) i) j) k) document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Saket Bhatt VP, RAQA AliveCor, Inc. REMARK:

1. This authorization letter will be sent along with your application when filing with UL Verification Services Inc. Please follow the format and type it on company letterhead and send original to us. Authorized signature must be in agreement with grantee code contact in FCC database and Industry Canada contact information. 2. 3. DocuSign Envelope ID: D5F52B96-B236-4A64-ADB7-C5C07F89E764