2AFWN-EL090MBCX0Hybrid Remocon Controller

Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03‐13‐2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AFWN‐EL090MBCX0 SOLUM 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. Sincerely, NAME: Ki Dong Lee Applicant: SOLUM CO.,LTD. Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03‐13‐2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AFWN‐EL090MBCX0 SOLUM 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 an entity producing “covered” equipment. Sincerely, NAME: Ki Dong Lee Applicant: SOLUM CO.,LTD.

Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03‐21‐2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: 2AFWN‐EL090MBCX0 SOLUM CO., LTD (“the applicant”) certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: FRN: 0033504820 Name: SOLUM America INC Address: 65 Challenger rd, Suite 220 Ridgefield park, NJ 07660, USA Contact Person: Hyunseok Jeong Tel.: 201 310 5242 Email: jhs@solu‐m.com Sincerely, SOLUM CO., LTD Hyunseok Jeong

Rev 11/20/07 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID : 2AFWN-EL090MBCX0 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: Exhibit Type File Name Block diagram Schematics Schematics_PCB Layout Parts list Operational description Block diagram(2AFWN-EL090MBCX0).pdf Schematics(2AFWN-EL090MBCX0).pdf Schematics_PCB Layout(2AFWN-EL090MBCX0).pdf Part list(2AFWN-EL090MBCX0).pdf Operational description(2AFWN-EL090MBCX0).pdf 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, NAME: Ki Dong Lee Applicant: SOLUM CO.,LTD.

Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date : March 13, 2023 SUBJECT: FCC Application for (FCC ID : 2AFWN-EL090MBCX0) To Whom It May Concern: We, the undersigned, hereby authorize Young-taek, Lee at CTK on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by CTK on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, NAME: Ki Dong Lee Applicant: SOLUM CO.,LTD.

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com EUT External Photographs CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com

Page SPECIFICATION EL090MBCX0 PAGE PUB. DATE 2023.02.07 (LABEL DRAWING) PAGE REV. DATE PAGE REV. 0 1 LABEL DRAWING B ac k L a b e l : 28 mm X12 mm I nterna l L a b e l : 28 mm X5 . 5 mm L a b e l C o l or : Bl ac k L a b e l C o l or : Bl ac k Product information is indicated in a printed sticker label. Th e information consists of Model ( model name ) , MFD ( manufacturin g date ) , S/N ( serial number ) CE & KC certification mark , FCC ID and Manufaturer. 1 ) FCC ID : 2AFWN-EL090MBCX0 2 ) R- R -SLU-EL090MBCX0 3 ) Model Name : EL090MBCX0 3 ) MFD : ( month ) . ( date ) . (y ear ) ex ) APR.17.2017 4 ) S/N : Dail y Production Quantit y ( 6 di g its ) & Serial Number Information & Bar-code ( hexadecimal 10 di g its ) 5 ) Model Name 2D Bar-code Page SPECIFICATION EL090MBCX0 PAGE PUB. DATE 2023.02.07 2 (LABEL DRAWING) PAGE REV. DATE PAGE REV. 0 FCC ID : 2AFWN‐EL090MBCX0R‐C‐SLU‐EL090MBCX0 MODEL :EL090MBCX0/WWWMFD: APR.17.2019S/N:XXXXXX 1623GDA001 MODEL :EL090MBCX0/WWWFCC ID : 2AFWN‐EL090MBCX0

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com EUT Internal Photographs CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com [SRD 2.4 GHz Antenna] [NFC Antenna] CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 1 of 3 RF EXPOSURE EVALUATION Applicant SOLUM CO.,LTD. Applicant Address 4,5,6th F, 357, Guseong-ro, Giheung-gu, Gyeonggi-do, Yongin-si, Republic of Korea Product Description Hybrid Remocon Controller FCC ID 2AFWN-EL090MBCX0 RF power 9.23 dBm (8.38 mW) Antenna type Chip Antenna Antenna Gain Peak Gain : 0.24 dBi Frequency Range 2 405 MHz Number of channels 1 CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 2 of 3 ** RF Exposure Evaluation** Limits SAR Test Exclusion Thresholds for 100 MHz - 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table, The equation and threshold in Note 1 must be applied to determine SAR test exclusion. Note 1: The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by : CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 3 of 3 [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]* [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where - f(GHz) is the RF channel transmit frequency in GHz - Power and distance are rounded to the nearest mW and mm before calculation - The result is rounded to one decimal place for comparison - 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1f) is applied to determine SAR test exclusion. Output Power: Mode Frequency (MHz) Maximum output power to antenna (mW) SAR Test Exclusion Threshold (mW) Zigbee 2 405 8.38 10 Per FCC KDB 447498 D01v06, the SAR exclusion threshold for distances ≤50mm is defined by the following equation : [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]* [√f(GHz)] ≤ 3.0 Base on the maximum conducted power of the antenna to use separation distance, SAR was not required; Bluetooth LE : [(8.38 / 5) * √2.405] = 2.60 (≤ 3.0) Result : As a result of the calculation above, the SAR test is exempt.

TEST REPORT CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 Report No.: CTK-2023-00690 Page (1) / (21) Pages [QF-QP15-07] Ver.01 R103 1. Applicant ◦ Name : SOLUM CO., LTD ◦ Address : 4,5,6th F, 357, Guseong-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Korea (Zip 16914) ◦ Date of Receipt : 2023-01-05 2. Manufacturer ◦ Name : SOLUM CO., LTD ◦ Address : 4,5,6th F, 357, Guseong-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Korea (Zip 16914) 3. Factory ◦ Name : SOLUM VINA CO., LTD ◦ Address : Plot B3, Ba Thien 2 Industrial park, Thien Ke Ward, Binh Xuyen District, Vinh Phuc Province, 281200.,Peple's Republic of Vietnam 4. Use of Report : For FCC Certification 5. Test Sample / Model : Hybrid Remocon Controller / EL090MBCX0 6. Date of Test : 2023-01-17 to 2023-03-31 7. Test Standard(method) used : FCC 47 CFR part 15 subpart C 15.225 8. Testing Environment : Temp.: (23 ± 1) °C, Humidity: (48 ± 5) % R.H. 9. Test Results : Compliance 10. Location of Test : Permanent Testing Lab On Site Testing (Address : 5, Dongbu-ro 221beon-gil, Cheoin-gu, Yongin-si, Gyeonggi-do, 17141 Korea) The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This report cannot be reproduced or copied without the written consent of CTK Approval Tested by Seoung-uk Park: (Signature) Technical Manager Young-taek Lee: (Signature) Remark. This report is not related to KOLAS accreditation and relevant regulation 2023-04-03 CTK Co., Ltd. CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 Report No.: CTK-2023-00690 Page (2) / (21) Pages [QF-QP15-07] Ver.01 R103 REPORT REVISION HISTORY Date Revision Page No 2023-04-03 Issued (CTK-2023-00690) all This report shall not be reproduced except in full, without the written approval of CTK Co., Ltd. This document may be altered or revised by CTK Co., Ltd. personnel only, and shall be noted in the revision section of the document. Any alteration of this document not carried out by CTK Co., Ltd. will constitute fraud and shall nullify the document. CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 Report No.: CTK-2023-00690 Page (3) / (21) Pages [QF-QP15-07] Ver.01 R103 CONTENTS 1. General Product Description ....................................................................................... 4 1.1 Applicant Information ........................................................................................ 4 1.2 Product Information ........................................................................................... 4 1.3 Antenna Information .......................................................................................... 4 2. Accreditations ........................................................................................................ 5 2.1 Laboratory Accreditations and Listings .................................................................. 5 2.2 Calibration Details of Equipment Used for Measurement .......................................... 5 3. Test Specifications .................................................................................................... 6 3.1 Standards ........................................................................................................ 6 3.2 Mode of operation during the test ........................................................................ 7 3.3 Peripheral Devices ............................................................................................. 7 3.4 Maximum Measurement Uncertainty .................................................................... 8 4. Technical Characteristic Test ....................................................................................... 9 4.1 Emission Bandwidth ........................................................................................... 9 4.2 Field strength emissions ................................................................................... 11 4.3 Frequency Stability .......................................................................................... 19 APPENDIX A – Test Equipment Used For Tests ................................................................ 21 CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 Report No.: CTK-2023-00690 Page (4) / (21) Pages [QF-QP15-07] Ver.01 R103 1. General Product Description 1.1 Applicant Information Company SOLUM CO., LTD Contact Point 4,5,6th F, 357, Guseong-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Korea (Zip16914) Contact Person Name : Ki Dong Lee E-mail : [email protected] Tel : +82-31-8006-7677 1.2 Product Information FCC ID 2AFWN-EL090MBCX0 Product Description Hybrid Remocon Controller Basic model (HVIN) EL090MBWX0 Variant Model name - FVIN V1.0 Operating Frequency Range 13.56 MHz RF Output Power 66.6 dBuV/m @ 3 m Antenna Type PCB antenna(Loop antenna) Power Source DC 3 V(Battery) 1.3 Antenna Information Integral antenna (antenna permanently attached) Temporary RF connector provided No temporary RF connector provided Transmit chains bypass antenna and soldered temporary RF connector provided for connected measurement. In case of conducted measurements the transmitter shall be connected to the measuring equipment via a suitable attenuator and correct for all losses in the RF path. External antenna (dedicated antennas) CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 Report No.: CTK-2023-00690 Page (5) / (21) Pages [QF-QP15-07] Ver.01 R103 2. Accreditations 2.1 Laboratory Accreditations and Listings Country Agency Registration Number USA FCC 805871 CANADA ISED 8737A KOREA NRRA KR0025 2.2 Calibration Details of Equipment Used for Measurement Test equipment and test accessories are calibrated on regul…

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CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Model : EL090MBCX0 Antenna 35 mm 44 mm

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Test Setup Photos and Configuration [Zigbee] Radiated Electric Field Emissions 9 kHz to 30 MHz 30 MHz to 1 GHz CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com 1GHz to 18 GHz 18 GHz to 26.5 GHz CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com [RFID] Radiated Electric Field Emissions 9 kHz to 30 MHz 30 MHz to 1 GHz CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Frequency Stability