2AVQ5BT-CFEA-FBLE Module

BT- CFEA-F

CFAF0001

BT Inc. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03-29-2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2AVQ5BT-CFEA-F BT Inc. certifies that, as of the date of the filing of the application, CAE Healthcare, Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. BT Inc. 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. CAE Healthcare, 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: Name: CAE Healthcare, Inc. Address: 6300 Edgelake Drive, Sarasota, FL. 34240, USA Contact Person: Jennifer Jula Tel.: +1 941 377-5562 2160 Email: [email protected] FRN : 0017020108 Sincerely, BT Inc. CAE Healthcare, Inc. Dae-Yong Kim Jennifer Jula (Applicant signature) Rev 1/26/2023

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03-29-2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AVQ5BT-CFEA-F BT Inc. 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. Sincerely, DAE YONG KIM / Director BT Inc. Rev 1/26/2023 BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, South Korea Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03-29-2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AVQ5BT-CFEA-F BT Inc. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, DAE YONG KIM / Director BT Inc. Rev 1/26/2023

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang- gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 29, 2023 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 In re : BT Inc. FCC ID : 2 AV Q 5 B T-CFEA-F Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules (CFR 47), BT Inc. hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA 04-1705. This provision will give BT Inc. commporary confidentiality of commercially sensitive information prior to product release. The requested Confidential and Temporary Confidential exhibits are listed as follows: Exhibit Type File Name CONFIDENTIAL Schematics CONF APPENDIX 2AVQ5BT-CFEA-F-F SCH DIA.pdf Parts list CONF APPENDIX 2AVQ5BT-CFEA-F-F PL.pdf Block diagram CONF APPENDIX 2AVQ5BT-CFEA-F-F BLK DIA.pdf Operational description CONF APPENDIX 2AVQ5BT-CFEA-F-F OpDes.pdf SHORT-TERM CONFIDENTIAL External Photos SHORT-TERM CONF 2AVQ5BT-CFEA-F-F EXT Photo.pdf Internal Photos SHORT-TERM CONF 2AVQ5BT-CFEA-F-F INT Photo.pdf Te s t-Setup Photos SHORT-TERM CONF 2AVQ5BT-CFEA-F-F Test Photo.pdf User’s Manual SHORT-TERM CONF 2AVQ5BT-CFEA-F-F Manual.pdf The Applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. Sincerely, DAE YONG KIM / Director BT Inc.

BT Inc. A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, South Korea March 29, 2023 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 LETTER OF AUTHORIZATION To whom it may concern: We, the undersigned, hereby authorize LTA Co., Ltd., to act on our behalf in all manners relating to application for equipment authorization for FCC ID: 2AVQ5BT-CFEA-F including signing of all documents relating to these matters. Any and all acts carried out by LTA Co., Ltd., on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from BT Inc. LTA Co.,LTD. (Contact Person) Contact name: Ja-Beom Koo Position: Manager Phone:(82)31-323-6008 E-mail: [email protected] Sincerely, DAE YONG KIM / Director BT Inc.

FCC ID: 2AVQ5BT-CFEA-F Front Rear Copyright ○ c 2023, LTA Co., Ltd .Page 1 of 4 FCC ID: 2AVQ5BT-CFEA-F To p Bottom Copyright ○ c 2023, LTA Co., Ltd .Page 2 of 4 FCC ID: 2AVQ5BT-CFEA-F Left Right Copyright ○ c 2023, LTA Co., Ltd .Page 3 of 4 FCC ID: 2AVQ5BT-CFEA-F Label Position Copyright ○ c 2023, LTA Co., Ltd .Page 4 of 4

FCC ID: 2AVQ5BT-CFEA-F SAMPLE LABEL & LOCATION Bottom Position BT Inc. Model : BT-CFEA-F FCC ID: 2AVQ5BT-CFEA-F Contains FCC ID: 2AVQ5BT-CFEA Made in Korea Copyright Ⓒ 2023, LTA Co., Ltd.

FCC ID: 2AVQ5BT-CFEA-F Board–Front Board–Rear Copyright ○ c 2023, LTA Co., Ltd. Page 1 of 6 FCC ID: 2AVQ5BT-CFEA-F Board–Front Board–Rear Copyright ○ c 2023, LTA Co., Ltd. Page 2 of 6 FCC ID: 2AVQ5BT-CFEA-F Board–Front Board–Rear Copyright ○ c 2023, LTA Co., Ltd. Page 3 of 6 FCC ID: 2AVQ5BT-CFEA-F Board–Front Board–Rear Copyright ○ c 2023, LTA Co., Ltd. Page 4 of 6 FCC ID: 2AVQ5BT-CFEA-F Antenna(2.4GHz ANT) Copyright ○ c 2023, LTA Co., Ltd. Page 5 of 6 FCC ID: 2AVQ5BT-CFEA-F Total configuration Photo Copyright ○ c 2023, LTA Co., Ltd. Page 6 of 6

FCC ID: 2AVQ5BT-CFEA-F ATTACHMENT RF EXPOSURE EVULATION 1.1 Limit According to §1.1310 and §2.1091 RF exposure is calculated. (B) Limits for General Population/Uncontrolled Exposures Frequency range (MHz) Electric field Strength Magnetic field Strength Power density Averaging time 1.34 - 30....................................... 824/f 2.19/f *(180/ f²) 30 30 - 300....................................... 27.5 0.073 0.2 30 300 - 1500.................................... ............... ............... f/1500 30 1500 - 100.000................................. ............... ............... 1.0 30 F = frequency in MHz * = Plane-wave equivalent power density 1.2 MAXIMUM PERMISSIBLE EXPOSURE Prediction Prediction of MPE limit at a given distance Power density at the specific separation: S = PG/(4R 2 π) Where, S = Maximum power density (mW/cm 2 ) P = Power input to the antenna (mW) G = Numeric power gain of the antenna R = Distance to the center of the radiation of the antenna (20 cm = limit for MPE) S = (1.36 * 0.78) / (4 * 20 2 * π) S = 0.34mW/cm 2 FCC ID: 2AVQ5BT-CFEA-F ATTACHMENT 1.3 MAXIMUM PERMISSIBLE EXPOSURE Prediction (Measured power 6.33 dBm ± 0.5dB) 3-1. 2.4 GHz BLE Max Peak output Power at antenna input terminal 1.34 dBm Max Peak output Power at antenna input terminal 1.36 mW Prediction distance 5 cm Prediction frequency 2402 MHz Antenna Gain(typical) -1.10 dBi Antenna Gain(numeric) 0.78 - Power density at prediction frequency( S) 0.34 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 0.17 mW/cm 2 Simultaneous transmission operations SAR Test exclusion thresholds for 100MHz to 6GHz at test separation distance ≤ 50 mm = Used [(max.power of channel, including tune-up torelance, mW)/(min. test separation distance, mm)] * [√f(GHz)] = [1.36 / 5 ] * [ √2.402 ] = 0.042 ≤ 3, for 1g SAR Thus, SAR for this device is not required.

Test Report No. : LR500112304B Copyright © 2023, LTA Co., Ltd. Page 1 of 25 TEST REPORT Test Report No. : LR500112304B Issue Date : APRIL 07, 2023 Applied Standard : FCC Part 15, Subpart B Trade Name : BT Inc. Equipment Name : CPR AND FIRST AID TRAINING MODEL Model Name : BT-CFEA-F Additional Model name : BT-CFEA-B Serial Number : Identification FCC ID : 2AVQ5BT-CFEA-F This test result only responds to the tested sample. It is not allowed to copy this report even partly without the allowance of the test laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the Federal Government. This test report is not related to KS Q ISO/IEC 17025 and KOLAS accreditation. This laboratory is accredited by National Radio Research Agency Laboratory and National Voluntary Laboratory Accreditation Program. The tests reported herein have been performed in accordance with its terms of accreditation. Test Report No. : LR500112304B Copyright © 2023, LTA Co., Ltd. Page 2 of 25 Revision history Revision Date of issue Test report No. Description 0 07.04.2023 LR500112304B Initial Test Report No. : LR500112304B Copyright © 2023, LTA Co., Ltd. Page 3 of 25 >>TABLE OF CONTENTS<< LTA Certification ......................................................... 오류! 책갈피가 정의되어 있지 않습니다. General information’s .......................................................................................................................... 6 1- Brief Information ........................................................................................................................... 7 2- Test Site Description ...................................................................................................................... 9 3- Test Procedure ................................................................................................................................ 11 4- List of Equipment Used For the Tests ........................................................................................ 14 5- EMISSION .................................................................................................................................... 15 5-1 Conducted Emissions ................................................................................................... 15 Conclusions ........................................................................................................................................ 25 Test Report No. : LR500112304B Copyright © 2023, LTA Co., Ltd. Page 4 of 25 LTA Certification Applicant / Manufacturer Company name : BT Inc. Address : A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, Republic of Korea Telephone / Facsimile : +82-2-2038-2903 / +82-303-3130-607 Factory Company name : BT Inc. Address : A-313 Samsong Techno-valley, 140, Tongil-ro, Deogyang-gu , Goyang-si, Gyeonggi-do, 10594, Republic of Korea Equipment Under Test (EUT) Equipment Name : CPR AND FIRST AID TRAINING MODEL Model name : BT-CFEA-F Additional Model name : BT-CFEA-B Serial number : Identification Intended environment : Industrial area Date of receipt : MARCH 30, 2022 EUT condition : Pre-production, not damaged Test Mode : Adapter+Communication Mode, Communication Mode Interface ports : USB-C, DC IN, AC IN Power rating : AC (100 ~ 240) V, (50 / 60) Hz, 0.4 A (Adapter) / DC 1.5 V x 6 EA (Battery (Type C)) Test Voltage : AC 120 V, 60 Hz, DC 9 V (Battery (Type C)) Model Description - NONE Model Specification - NONE *** To be continued next page *** Test Report No. : LR500112304B Copyright © 2023, LTA Co., Ltd. Page 6 of 25 General information’s Purpose This document is based on the Electromagnetic Interference (EMI) tests performed on the “BT-CFEA-F”. The measurements were performed according to the measurement procedure described in ANSI C 63.4-2014.The tests were carried out in order to confirm whether the electromagnetic emissions from the EUT( Equipment Under Test), are within the Class A limits defined in FCC Part 15, Subpart B- “Section 15.107- Conducted limits” and “Section 15.109-Radiated emission limits”. Test Performed Company name : LTA Co., Ltd. Address : 34, Songju-ro 236Beon-gil, Yangji-myeon, Cheoin-gu Yongin-si, Gyeonggi-do 449-822, Korea Telephone : +82-31-323-6008 Facsimile +82-31-323-6010 Measurement uncertainty Conducted Emissions (0.15 to 30 MHz) : ±2.81 [dB] (k=2) Radiated Emissions (30 to 1,000 MHz) : H : ±4.62 [dB] (k=2) V : ±4.85 [dB] (k=2) (1 GHz to 6 GHz) : H : ±5.65 [dB] (k=2) V : ±5.68 [dB] (k=2) (6 GHz to 18 GHz) : H : ±5.90 [dB] (k=2) V : ±5.74 [dB] (k=2) The coverage factor k=2 yields approx. a 95% level of confidence for near-normal distribution typical of most measurement results. Accredited agencies LTA Co., Ltd. is approved to perform EMC testing by the following agencies: Agency Country Accreditation No. Validity Reference NVLAP U.S.A 200723-0 2023-09-30 ECT accredited Lab. RRA KOREA U.S.A CANADA KR0049 - 2023-04-08 2024-08-15 RRA accredited Lab. VCCI JAPAN C-14948 T-12416 R-14483 G-10847 2023-09-10 2023-09-10 2023-10-15 2024-12-13 VCCI registration KOLAS KOREA KT551 2025-10-12 KOLAS accredited Lab. Test Report No. : LR500112304B Copyright © 2023, LTA Co., Ltd. Page 7 of 25 1- Brief Information 1-1 Test Summary Parameter Applied Standard Status (note 1) I. Emission Conducted Emissions FCC Part 15.107 C Radiated Emissions FCC Part 15.109 C Note 1: C=Complies NC=Not Complies NT=Not Tested NA=Not Applicable * The data in this test report are traceable to the national or international standards. Frequency range to be scanned: 0.15 MHz - 30 MHz as conducted measurement 30 MHz to 5 th harmonic of the highest frequency or 40 GHz, whichever is lower as radiated measurement. Bandwidth: Measured by the CISPR quasi-peak function Bandwidth is 9 kHz in the frequency 0.15 MHz to 30 MHz and 120 kHz in the frequency 30 MHz to 1,000 MHz. Measured by the Peak function Bandwidth is 1 MHz i…

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Page 1 of5 Conducted Emissions FCC ID : 2AVQ5BT-CFEA-F Copyright ©2023, LTA Co., Ltd. Page2 of5 Radiated Emissions - Below 1 GHz - Adapter+Communication FCC ID : 2AVQ5BT-CFEA-F Copyright ©2023, LTA Co., Ltd. Page3 of5 - Communication FCC ID : 2AVQ5BT-CFEA-F Copyright ©2023, LTA Co., Ltd. Page 4 of5 Radiated Emissions - Above 1 GHz - Adapter+Communication FCC ID : 2AVQ5BT-CFEA-F Copyright ©2023, LTA Co., Ltd. Page 5 of5 - Communication FCC ID : 2AVQ5BT-CFEA-F Copyright ©2023, LTA Co., Ltd.