2BBOF-SLEEPADESleep Monitoring System

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Subject : Covered List Attestation Letter (Section 2.911 (d)(5)(i)(ii)) Date: 6/29/2023 FCC ID: 2BBOF-SLEEPADE To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA BrainU Co., Ltd. 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. 2.911 (d)(5)(i)(ii) And, we certifies that one of following, ☒ 1. We are not identified on the Covered List and are not an affiliate or subsidiary of an entity identified on the Covered List. ☐ 2. We are identified on the Covered List as an entity producing “covered” equipment. But, we can be authorized since the reason as explained below. ☐ 3. We are an affiliate or subsidiary of an entity identified on the Covered List. But, we can be authorized since the reason as explained below. *Only one of paragraphs 1, 2 or 3 should be checked, if checked on paragraphs 2 or 3, the reason why it does not include the “covered” equipment should be addressed. Sincerely yours, (Name) Sang-woo Choi (Title) Deputy Department Manager (Company Name) BrainU Co., Ltd.

V02072023 Manufacturers Letterhead Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07/13/23 Ref: Attestation Statement Part 2.911(d)(7) Filing FCC ID:2BBOF-SLEEPADE BrainU Co., Ltd. certifies that, as of the dates of this application, Americas Compliance Consulting LLC dba iCertifi “iCertifi” is our designated U.S. agent for service of process for the above referenced FCC ID. BrainU Co., Ltd. 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. iCertifi accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Americas Compliance consulting, LLC dba iCertifi FCC FRN: 0033399411 Address: 1001 SW Disk Drive, Suite 250, Bend, Oregon 97702 Contact Person: Paul Preston Tel: 866-885-4575 Email: [email protected] Sincerely, BrainU Co., Ltd. Americas Compliance Consulting LLC dba iCertifi Sang-woo Choi Paul Preston Signature

Date: To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To whom it may concern: Subject : FCC Agent Authorization Letter for FCC ID :2BBOF-SLEEPADE This authorization is valid until further written notice from the applicant. Sincerely, Signed by: (Name) Sang-woo Choi (Title) Deputy Department Manager [email protected] 82-31-707-1788 (Address) June 29, 2023 3F, 7, Yatap-ro 105beongil, Bundang-gu, Sengnam-si, Gyeonggi-do, Republic of Korea We, the undersigned, hereby authorize HCT 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 HCT CO., LTD. on our behalf shall have the same effect as acts of our own. We, 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). We recognize that we are still responsible for the terms and conditions outlined in the HCT America Client Services Agreement. _________________________ (Email Address) (Phone number)

Date: To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD SUBJECT: Request for Confidentiality for FCC ID: 2BBOF-SLEEPADE We hereby request confidential treatment of the information accompanying this application as outlined below: Exhibit 1 2 3 4 5 6 7 8 Sincerely, Signed by: (Name) Sang-woo Choi (Title) Deputy Department Manager (Email Address) [email protected] (Phone number) 82-31-707-1788 (Address) 3F, 7, Yatap-ro 105beongil, Bundang-gu, Sengnam-si, Gyeonggi- do, Republic of Korea June 29, 2023 Description Block Diagram Operational Description 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 & 0.459 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. LONG-TERM CONFIDENTIAL SHORT-TERM CONFIDENTIAL (180 DAYS) User’s Manual Test-Setup Photos Internal Photos External Photos Schematics Parts List LONG-TERM AND SHORT-TERM CONFIDENTIAL LIST

FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １ of 5 EXTERNAL PHOTOGRAPHS FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２ of 5 ■ EXTERNAL PHOTO FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ３ of 5 ■ EXTERNAL PHOTO FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ４ of 5 ■ EXTERNAL PHOTO(Charging Casing) FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ５ of 5 ■ EXTERNAL PHOTO(Charging Casing)

SLEEPadebottom (Label)

FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １ of 6 INTERNAL PHOTOGRAPHS FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２ of 6 ■ INTERNAL PHOTO FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ３ of 6 ■ INTERNAL PHOTO FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ４ of 6 ■ INTERNAL PHOTO FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ５ of 6 ■ INTERNAL PHOTO FCC ID: 2BBOF-SLEEPADE HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ６ of 6 ■ INTERNAL PHOTO(ANT)

HCT Co., Ltd. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 645 6300 Fax. +82 31 645 6401 F-TP22-03 (Rev. 04) Page 2 of 23 TE S T R E P O R T E M I T e s t f o r F C C C e r t i f i c a t i o n REPORT NO. HCT-EM-2307-FC004 DATE OF ISSUE July 17, 2023 FCC ID. 2BBOF-SLEEPADE Applicant BrainU Co., Ltd. 3F, 7, Yatap-ro 105beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea Product Name Model Name Sleep Monitoring System SLEEPade Date of Test June 28, 2023 to July 04, 2023 Test Standard Used FCC CFR 47 PART 15 Subpart B Class B ANSI C63.4-2014 Test Results Refer to the present document Manufacturer BrainU Co., Ltd. The result shown in this test report refer only to the sample(s) tested unless otherwise stated. This test results were applied only to the test methods required by the standard. F-TP22-03 (Rev. 04) Page 3 of 23 Report No. HCT-EM-2307-FC004 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 July 17, 2023 Initial Release The above Test Report is not related to the accredited test result by (KS Q) ISO/IEC 17025 and KOLAS(Korea Laboratory Accreditation Scheme), which signed the ILAC-MRA. If this report is required to confirmation of authenticity, please contact to www.hct.co.kr F-TP22-03 (Rev. 04) Page 4 of 23 Report No. HCT-EM-2307-FC004 CONTENTS 1. GENERAL INFORMATION 5 1.1 Description of EUT 5 1.2 Tested System Details 5 1.3 Cable Description 6 1.4 Noise Suppression Parts on Cable (I/O Cable) 7 1.5 Test Facility 8 1.6 Calibration of Measuring Instrument 8 1.7 Measurement Uncertainty 8 2. DESCRIPTION OF TESTING 9 2.1 Measurement of Conducted Emission 9 2.2 Measurement of Radiated Emission 10 2.3 Configuration of Tested System 12 3. OPERATION OF THE EUT 13 4. MEASURING INSTRUMENTS 14 5. EMISSION TEST SUMMARY 15 5.1 Conducted Emission 15 5.2 Radiated Emission Below 1 ㎓ 18 5.3 Radiated Emission Above 1 ㎓ 20 6 APPENDIX A. TEST SETUP PHOTO 23 F-TP22-03 (Rev. 04) Page 5 of 23 Report No. HCT-EM-2307-FC004 1.GENERAL INFORMATION 1.1 Description of EUT FCC ID 2BBOF-SLEEPADE Product Name Sleep Monitoring System Model Name SLEEPade Frequency Range Bluetooth: 2 402 ㎒ to 2 480 ㎒ Power Rated DC 3.7 V Manufacturer BrainU Co., Ltd. 1.2 Tested System Details All equipment descriptions used in the tested system (including inserted cards) are: Device Type Model Name Serial Number Manufacturer Sleep Monitoring System SLEEPade - BrainU Co., Ltd. AC/DC Adaptor* GTM46101-1306-0 9 USB - GlobTek,Inc. Notebook PC HP ProBook 6560b 5CB2095MKD HP Notebook PC Adapter Series PPP009L-E - Lite-ON Technology Co., Ltd. Signal Channel EEG Test Unit SEEG 100 WEE1001-220006 Whale Teq Co., Ltd EEG Breakout Box EBOX100 WEB1001-210020 Whale Teq Co., Ltd Smart phone LM-G710EM 806KPSL0132278 LG Electronics Inc. [*] Input: AC 100 to 240 V, 50/60 Hz, 0.3 A [*] Output: DC 5.1 V, 2.54 A F-TP22-03 (Rev. 04) Page 6 of 23 Report No. HCT-EM-2307-FC004 1.3 Cable Description Charging Mode Product Name Port Power Cord Shielded (Y/N) I/O Cable Shielded (Y/N) Length (m) EUT C-type USB Y N 0.8 “(D)” data cable and “(P)” power cable. Normal Mode Product Name Port Power Cord Shielded (Y/N) I/O Cable Shielded (Y/N) Length (m) EUT Zig (3 line) N N 0.2 EEG Breakout Box 15PIN N N - Signal Channel EEG Test Unit USB N Y 1.8 Ground N N 1.5 Notebook PC Power Y N 1.8 “(D)” data cable and “(P)” power cable. F-TP22-03 (Rev. 04) Page 7 of 23 Report No. HCT-EM-2307-FC004 1.4 Noise Suppression Parts on Cable (I/O Cable) Charging Mode Product Name Port Ferrite Bead (Y/N) Location Metal Hood (Y/N) Location EUT C-type USB N N Y Both Normal Mode Product Name Port Ferrite Bead (Y/N) Location Metal Hood (Y/N) Location EUT Zig (3 line) N N Y Both EEG Breakout Box 15PIN N N N - Signal Channel EEG Test Unit USB Y Both Y Both Ground N N Y Both Notebook PC Power N N Y Both F-TP22-03 (Rev. 04) Page 8 of 23 Report No. HCT-EM-2307-FC004 1.5 Test Facility Test site is located at 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, Korea. Those measurement facilities are constructed in conformance with the requirements of ANSI C63.4-2014. The Normalized site attenuations (30 ㎒ to 1 ㎓) and Site validation (1 ㎓ to 18 ㎓) were performed in accordance with the standard in ANSI C63.4-2014 and ANSI C63.4a-2017 Our laboratories are accredited and designated in accordance with the provisions of Radio Waves ACT and International Standard ISO/IEC 17025:2017. (National Radio Research Agency, CABID No. KR0032) 1.6 Calibration of Measuring Instrument The measuring equipment, which was utilized in performing the tests documented herein, has been calibrated in ac cordance with the manufacturers recommendations for utilizing calibration equipment, which is traceable to recognized national standards.Espectially, all antenna for measurement is calibrated in accordance with the requirements of C63.5:2017 1.7 Measurement Uncertainty The measurement uncertainties shown below were calculated in accordance with the requirements of ANSI C63.4-2014. All measurement uncertainty values are shown with a coverage factor of k = 2 to indicate a 95 % level of confidence. The measurement data shown herein meets or exceeds the U CISPR measurement uncertainty values specified in CISPR 16-4-2 and, thus, can be compared directly to specified limits to determine compliance. Parameter Test Site Expanded Uncertainty Conducted Emission EMI Shield Room 2.0 dB Radiated Emission (30 ㎒ to 1 ㎓) 3 m Semi Anechoic Chamber #1 5.9 dB Radiated Emission (1 ㎓ to 18 ㎓) 3 m Semi Anechoic Chamber #1 4.8 dB F-TP22-03 (Rev. 04) Page 9 of 23 Report No. HCT-EM-2307-FC004 2. DESCRIPTION OF TESTING 2.1 Measurement of Conducted Emission The test procedure was in accordance with ANSI C63.4-2014, Clause 7.3 a. The EUT was placed 0.4 meters from the conducting wall of the shielded room with EUT being connected to the power mains through a line impedance stabilization network (LISN). If the EUT is…

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File No. HCT-EM-2307-FC004-P Page 1 of 6 HCT Co., Ltd. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 645 6300 Fax. +82 31 645 6401 A p p e n d i x A : Te s t S e t u p P h o t o Model Name. SLEEPade File No. HCT-EM-2307-FC004-P REVISION HISTORY The revision history for this document is shown in table. Revision No. Date of Issue Description 0 July 17, 2023 Initial Release File No. HCT-EM-2307-FC004-P Page 2 of 6 Model Name. SLEEPade A.1 Conducted Emission Charging Mode File No. HCT-EM-2307-FC004-P Page 3 of 6 Model Name. SLEEPade A.2 Radiated Emission below 1 ㎓ Charging Mode File No. HCT-EM-2307-FC004-P Page 4 of 6 Model Name. SLEEPade Normal Mode File No. HCT-EM-2307-FC004-P Page 5 of 6 Model Name. SLEEPade A.3 Radiated Emission above 1 ㎓ Charging Mode File No. HCT-EM-2307-FC004-P Page 6 of 6 Model Name. SLEEPade Normal Mode End of report