2AFWN-EL042F3WRAESL Label

REV 1.1 SOLUM 1 General Description SOLUM NEWTON Electronic Shelf Labels (ESLs) are components to a total SOLUM’s ESL System. The SOLUM’s ESL System consists of the ESLs, Gateway(s), Server, and optional accessories (such as the Newton Remote Controller) and is used to electronically displays key information such as price and product information, that are traditionally printed or written on paper in environments like supermarkets, warehouses, and factories. SOLUM’s Newton ESLs are the industry leading solutions that provide the longest battery life (up to 13 years), fastest update speed, built in LEDs, built in buttons, IP67 rating for rough environments, multiple pages per ESL, and more to take the operation beyond just displaying information on the ESLs. Newton ESLs come in various sizes and colors to meet all customer use cases. They are battery powered for ease of deployment and wirelessly receive updates from SOLUM Gateway for. REV 1.1 SOLUM 2 Specification This section details specification of each ESL by size. ESLs are identified by the diagonal measurement of the display in inches. For example, a 2.9” ESL is referring to an ESL with the diagonal display dimension of 2.9”. 2.1 Product Specification Item Description Label Dimensions 4.2”: 3.86 x 3.29 x 0.57 inches (98.1 x 83.8 x 14.5 mm) Display Dimensions 4.2”: 3.33 x 2.50 inches (84.8 x 63.6 mm) Display Resolution 4.2”: 400 x 300 pixels (120 dpi) Item Description Label Weight 4.2”: 83.0g / 2.9oz Viewing Angle Nearly 180° Display Colors BW (black, white) BWR (black, white, red) BWY (black, white, yellow) ** color options are not available for all sizes. See Section 3.XX for full list of options. Battery Type and quantity of batteries defer based on ESL CR2450 Lithium Battery 2pcs Wireless Communication 2.4 GHz Unlicensed ISM band BLE physical layer with SOLUM proprietary protocol Communication Distance 98 feet (30m) radius Line of Sight REV 1.1 SOLUM Security 128-bit AES Encryption Compliance FCC, CE, RoHS Operating Temperature Nominal ESLs BWR: 32F ~ 104F (0C ~ 40C) @45~70% RH BWY: 32F ~ 86F (0C ~ 30C) @45~70% RH Freezer ESLs BW: -13F ~ 31F (-25C ~ 0C) *freezer ESL must be used in freezer enviroments Storage Temperature 32F ~ 104F (0C ~ 40C) @45~70% RH 2.2 Radio (RF) Specification Item Parameter Specification Unit Condition Min Typ Max Tx Tx Power -3 0 4 dBm [Carrier Frequency Offset and Drift] -75 0 75 kHz Tx Current - 8 mA total current at max Tx Power Rx Receiver Sensitivity -85 - - dBm PER < 5% REV 1.1 SOLUM 2.3 NFC Specification Item Parameter Specification Unit Condition Min Typ Max NFC Read Distance - 0.7 - in - 20 - mm NFC antenna location shown for each ESL size. 2.4 Model Name Display Color Label(BW) Display Color Label(BWR) Display Color Label(BWY) 4.2" EL042F3WRA REV 1.1 SOLUM 3 Product Handling Precautions Provisions should be made to protect against any damage to the product caused by improper handling. The purchaser assumes any responsibility for damage to the product caused by improper handling. Product should be stored in 32F ~ 104F (0C ~ 40C) @45~70% RH environment and should be installed within 90 days of receipt. 3.1 Usage Environment Take extra caution when using this RF device in the vicinity of other electronic devices and appliances. Most electronic devices and appliances use electromagnetic waves. Electromagnetic waves emitted by this RF device can affect other electronic devices and appliances. If using the device in an explosion hazard area, follow all safety regulations, instructions, and signals. 3.2 Storage and Use  Moisture and liquids can damage internal parts and circuit boards if allowed to enter into the device itself.  Do not place or store the product on a sloped surface. The product may slide and fall off the surface and become damaged.  Use the product in temperatures ranges of 0°C~40°C/32~104°F(BWR), 0°C~30°C/32~86°F (BWY), or -25°C~0°C/-13~32°F(Freezer). Parts and circuits may be damaged if operated or stored in extreme temperature.  The display panel needs extra care during handling. - Do not apply any impacts on the e-Paper display as it is fragile. - Continuous exposure to excessive moisture (over 70% RH) or UV shortens display lifetime. - Ghosting image may appear in temperature conditions of less than 15°C/59°F for normal tags and -25°C/ -13°F for freezer tags. (If ΔL* >2, we call it ghosting phenomenon)  Avoid areas with strong magnetism or subject to magnetism. Contact between the device and a magnetic object can lead to malfunctions.  Do not place the product near heat-producing kitchen appliances like a stove or a microwave or in the vicinity of highly pressurized containers.  External impact to the product, such as from being dropped, can damage the product.  Twisting and bending the product can damage the exterior casing and the internal components. REV 1.1 SOLUM  If this product operates abnormally while removing battery or replacing battery, it needs to be discharged by contacting the battery terminals (+) and (-) in the product.  This product uses the 2.4GHz frequency band for the wireless communication network. Radio communications can be limited or affected by other applications that share the same frequency band, such as WiFi, Bluetooth, Zigbee, etc.  A prior investigation into the radio environment is strongly required for efficient and smooth installation.  Frequent communications, updates and screen renewals may reduce battery life time.  Low temperature environments may reduce battery life.  FIFO (First In First Out) 3.3 Product Cleaning For Spray Cleaning: Steps ① Lightly spray all surfaces and wait a few seconds. ② Gently wipe clean using a cloth or tissue. ③ Let the labels dry. Notes:  Use mild, non-alcoholic detergents or glass cleaner.  Recommend non-abrasive cloths: Microfiber, Cotton T-shirt, Cotton handkerchief, Cotton tea towel For Wet Tissue Cleaning: Steps ① Stand or lay down the labels. ② Wipe using wet tissues. ③ Let the labels dry. REV 1.1…

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Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 06‐23‐2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2AFWN‐EL042F3WRA 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: jhs@solu‐m.com Sincerely, SOLUM CO., LTD SOLUM America INC Ki Dong Lee Hyunseok Jeong

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‐EL042F3WRA 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: 06‐16‐2023 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 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AFWN‐EL042F3WRA 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, Date: 06‐16‐2023 NAME: Ki Dong Lee Applicant: SOLUM CO.,LTD.

Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 SUBJECT: FCC Application for (FCC ID : 2AFWN‐EL042F3WRA) 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, Date : 06, 16, 2023 NAME: Ki Dong Lee Applicant: SOLUM CO.,LTD.

Rev 11/20/07 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID : 2AFWN‐EL042F3WRA 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.pdf Schematics.pdf Schematics_PCB Layout.pdf Part List.pdf Operational Description.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, Date : 06, 16, 2023 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 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

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 33 mm 23 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 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 Page 1 of 2 RF EXPOSURE EVALUATION FCC ID : 2AFWN-EL042F3WRA 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 3.56 2.59 + 1.50.001 2 1 Conclusion This confirms compliance to the required Radio frequency radiation exposure limit.

KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF-23T0106-R1 Page ( 1 ) of ( 37 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP16-F01(00-23-01-01) TEST REPORT Part 15.247 & RSS-247 (Issue 2) Equipment under test ESL Label Model name EL042F3WRA Variant Model name EL042F3BRA, EL042F3WRC, EL042F3SRA, EL042F3ZRA, EL042F3WYA, EL042F3BYA FCC ID 2AFWN-EL042F3WRA IC ID 22800-EL042F3WRA Applicant SOLUM CO., LTD Manufacturer SOLUM CO., LTD Date of test(s) 2023.07.19 ~ 2023.07.23 Date of issue 2023.07.25 Issued to SOLUM CO., LTD 4,5,6th F, 357, Guseong-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Korea (Zip 16914) Tel: +81-31-8006-7705 Issued by KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea 473-21, Gayeo-ro, Yeoju-si, Gyeonggi-do, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 Test and report completed by : Report approval by : Dong-Uk, Kim Test engineer Young-Jin, Lee Technical manager This test report is not related to KS Q ISO/IEC 17025 and KOLAS KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF-23T0106-R1 Page ( 2 ) of ( 37 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP16-F01(00-23-01-01) Revision history Revision Date of issue Test report No. Description - 2023.07.25 KES-RF-23T0106 Initial 1 2023.07.25 KES-RF-23T0106-R1 1. Change the applicant's address 2. Add Variant Model KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF-23T0106-R1 Page ( 3 ) of ( 37 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected] KES-QP16-F01(00-23-01-01) TABLE OF CONTENTS 1. General information ................................................................................................................................................... 4 1.1. EUT description ........................................................................................................................................ 4 1.2. Test configuration ...................................................................................................................................... 4 1.3. Factory & Factory adress .......................................................................................................................... 5 1.4. Information about Variant Model .............................................................................................................. 5 1.5. Accessory information .............................................................................................................................. 5 1.6. Sample calculation .................................................................................................................................... 5 1.7. Measurement Uncertainty ......................................................................................................................... 5 1.8. Frequency/channel operations ................................................................................................................... 6 2. Summary of tests ........................................................................................................................................................ 7 3. Test results .................................................................................................................................................................. 8 3.1. 99% Occupied Bandwidth ......................................................................................................................... 8 3.2. 6 ㏈ bandwidth ...................................................................................................................................... 10 3.3. Output power ........................................................................................................................................... 12 3.4. Power spectral density ............................................................................................................................. 14 3.5. Radiated restricted band and emissions ................................................................................................... 16 3.6. Conducted spurious emissions & band edge ........................................................................................... 32 Appendix A. Measurement equipment ......................................................................................................................... 36 Appendix B. Test setup photos ..................................................................................................................................... 37 KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr Report No.: KES-RF-23T0106-R1 Page ( 4 ) of ( 37 ) This report shall not be reproduced except in full, without the written approval of KES Co., Ltd. The results shown in this test report refer only to the sample(s) tested unless otherwise stated. The authenticity of the test report, contact [email protected]…

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ART SIGNAL Company _ Antenna Total Solution ( ART-S 2022) Ver.1 2021 3D gain 1 2 3 4 5 Frequency [MHz] 2400 2420 2440 2460 2485 Efficiency [dB] -2.67 -2.41 -2.20 -2.12 -1.96 Efficiency [%] 54.1 57.4 60.3 61.4 63.7 Peak Gain [dB] 1.75 2.13 2.27 2.29 2.59 Directivity [dB] 4.42 4.55 4.47 4.41 4.55 Minimum Gain [dB] -16.26 -15.32 -13.90 -12.76 -12.12 Solu-M Newton Silabs 4.2 ANT #1 TEST DATA Picture VSWR ART SIGNAL Company _ Antenna Total Solution ( ART-S 2022) Ver.1 2021 2400 2420 2440 2460 2485 3D Radiation Pattern 2.4G ANT DATA – 3D Radiation Pattern ART SIGNAL Company _ Antenna Total Solution ( ART-S 2022) Ver.1 2021 Measurement Procedure Network Analyzer을 이용하여 VSWR 측정 3D Chamber에 Set 거치 Program을 이용하여 Gain 측정 ART SIGNAL Company _ Antenna Total Solution ( ART-S 2022) Ver.1 2021 E5071B (Agilent) 8753ES (Agilent) Network Analyzer CTIA 3D OTA Chamber(A+Tech) Measurement Equipment

KES Co., Ltd. 3701, 40, Simin-daero 365beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14057, Korea Tel: +82-31-425-6200 / Fax: +82-31-424-0450 www.kes.co.kr KES-QP16-F01(00-23-01-01) Appendix B. Test setup photos Radiated test N/A