2AFWN-EL042F5C4CESL Label

Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 08-21-2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AFWN-EL042F5C4C 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 a specifically named entity or any of its subsidiaries or affiliates) 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 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AFWN-EL042F5C4C 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, Date: 08-21-2023 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: 08-21-2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2AFWN-EL042F5C4C Applicant FRN: 0025024894 SOLUM CO., LTD (“the applicant”) certifies that, as of the date of the filing of the application, SOLUM America INC is our designated U.S. agent for service of process for the above referenced FCC ID. SOLUM 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. SOLUM America 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: SOLUM America INC FRN (If the U.S. agent has an FRN): 0033504820 Address: 65 Challenger rd, Suite 220 Ridgefield park, NJ 07660, USA Contact Person: Hyunseok Jeong Tel.: 201 310 5242 Email: [email protected] Sincerely, SOLUM CO., LTD SOLUM America INC Ki Dong Lee Hyunseok Jeong

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date : August 21, 2023 SUBJECT: FCC Application for (FCC ID : 2AFWN-EL042F5C4C) 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, 449-100, 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, 449-100, 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, 449-100, 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, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Label Photographs 28 mm 12 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 EUT Internal Photographs 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 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 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 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 {2401-2480MHz Antenna(TX, RX)} {NFC Antenna (RX)} ] [NFC(RX) [NFC(RX)

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 2 RF EXPOSURE EVALUATION FCC ID : 2AFWN-EL042F5C4C Standard Requirement The following FCC Rule Parts and procedures are applicable : Part 1.1310 Radiofrequency radiation exposure limits Part 2.1091 Radiofrequency radiation exposure evaluation : Mobile device Table 1 below sets forth limits for Maximum Permissible Exposure (MPE) to radiofrequency electromagnetic fields. Table 1—Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 6 3.0-30 1842/f 4.89/f *900/f 2 6 30-300 61.4 0.163 1.0 6 300-1,500 f/300 6 1,500-100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *100 30 1.34-30 824/f 2.19/f *180/f 2 30 30-300 27.5 0.073 0.2 30 300-1,500 f/1500 30 1,500-100,000 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density 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 2 MPE calculation S = EIRP / (4πR 2 ) Where S : Power density (mW/cm 2 ) EIRP : P + T + G (dBm) P : Maximum transmitter power (dBm) G : Antenna gain (dBi) R : distance to the centre of radiation of the antenna (cm) T : Power tolerance (dB) Safety distance(R) : 20 cm Mode Conducted Output power [dBm] Antenna Gain [dBi] Power tolerance [dB] Power density [mW/cm 2 ] Limit [mW/cm 2 ] GFSK 3.789 1.13 + 1.50.000 87 1 Conclusion This confirms compliance to the required Radio frequency radiation exposure limit.

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-2023-02168-1 Page (1) / (28) Pages [QF-QP15-07] Ver.01 R101 1. Applicant ◦ Name : SOLUM CO., LTD ◦ Address : 4,5,6th F, 357, Guseong-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea (Zip 16914) ◦ Date of Receipt : 2023-08-21 2. Manufacturer ◦ Name : SOLUM CO., LTD ◦ Address : 4,5,6th F, 357, Guseong-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of 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 & Canadian Certification 5. Test Sample / Model : ESL Label / EL042F5C4C 6. Date of Test : 2023-09-03 to 2023-09-27 7. Test Standard(method) used : FCC 47 CFR part 15 subpart C 15.247, ANSI C63.10-2013, RSS-247, RSS-Gen 8. Testing Environment : Temp.: (23 ± 1) °C, Humidity: (51 ± 3) % 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 Bong-seok Kim: (Signature) Technical Manager Young-taek Lee: (Signature) Remark. This report is not related to KOLAS accreditation and relevant regulation. 2023-10-11 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-2023-02168-1 Page (2) / (28) Pages [QF-QP15-07] Ver.01 R101 REPORT REVISION HISTORY Date Revision Page No 2023-10-11 Issued (CTK-2023-02168) all 2023-10-11 Issued (CTK-2023-02168-1) -Add variant model 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-2023-02168-1 Page (3) / (28) Pages [QF-QP15-07] Ver.01 R101 CONTENTS 1. General Product Description ....................................................................................... 4 1.1 Applicant Information ........................................................................................ 4 1.2 Product Information ........................................................................................... 4 1.3 Peripheral Devices ............................................................................................. 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 Maximum Measurement Uncertainty .................................................................... 7 3.4 Test Software ................................................................................................... 7 4. Technical Characteristic Test ....................................................................................... 8 4.1 6dB Bandwidth & 99% Bandwidth ........................................................................ 8 4.2 Maximum peak Conducted Output Power ............................................................ 10 4.3 Power Spectral Density .................................................................................... 12 4.4 Band Edge & Conducted Spurious emission ......................................................... 14 4.5 Radiated Emission ........................................................................................... 17 APPENDIX A – Test Equipment Used For Tests ................................................................ 28 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-2023-02168-1 Page (4) / (28) Pages [QF-QP15-07] Ver.01 R101 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, Republic of Korea (Zip 16914) Contact Person Name : Ki Dong Lee E-mail : [email protected] Tel : +82-31-8006-7677 1.2 Product Information FCC ID 2AFWN-EL042F5C4C IC 22800-EL042F5C4C Product Description ESL Label Model name EL042F5C4C Variant Model name EL042F5W4C, EL042F5B4C, EL042F5WRC, EL042F5BRC, EL042F5CRC (Variant models have no technical differences with each model except for the model name and color for marketing purposes.) Operating Frequency 2 401 MHz - 2 480 MHz RF Output Power 3.789 dBm(2.393 mW) Antenna Specification Antenna type : PCB Antenna Peak Gain : 1.13 dBi Number of channels 80 Channel Spacing 1 MHz Type of Modulation GFSK Power Source DC 3.0 V(Battery) FVIN V28 Test Software(Version) Tera term (Version 4.8.5) 1.3 Peripheral Devices -For Conducted Measurement and Radiated Measurement Device Manufacturer Model No. Serial No. Notebook HP Inc. HP Probook 455 G7 5CD0234DWM AC Adapter HP Inc. PPP012D-S 677777-003 CTK Co., Ltd.…

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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 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 [1 GHz 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 Conducted test