SOLUM ESL Datasheet
Solution provider.
Datasheet
15-04-2025
This datasheet presents the general performance and specifications of SOLUM Electronic Shelf Label (ESL) System.
© SOLUM. All rights reserved. The names of actual companies and products mentioned herein may be the trademarks of their respective owners. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means without the express written consent of SOLUM. This document is subject to change without notice.
Table of Contents
- 1 GENERAL DESCRIPTION
- 1.1 FEATURES
- 1.2 TYPICAL APPLICATIONS
- 1.3 APPEARANCE
- 2 SPECIFICATION
- 2.1 PRODUCT SPECIFICATION
- 2.2 RADIO (RF) SPECIFICATION
- 2.3 NFC SPECIFICATION
- 2.4 FEATURES
- 2.5 LABEL MARKING
- 3 RELIABILITY TEST
- 4 PRODUCT HANDLING PRECAUTIONS
- 4.1 USAGE ENVIRONMENT
- 4.2 STORAGE AND USE
- 4.3 PRODUCT CLEANING
- 4.4 BATTERY REPLACEMENT
- 5 BATTERY HANDLING GUIDE
- 5.1 AVOIDING HAZARDS IN LITHIUM BATTERY HANDLING
- 5.2 PROPER STORING AND DISPOSING OF LITHIUM BATTERIES
- 6 CERTIFICATIONS
- 6.1 FCC
- 6.2 CE
- 6.3 ISED
- 6.4 KC
DOCUMENT HISTORY
| Rev. | Date | Revision History | Page |
|---|---|---|---|
| 1.6 | 4 / 19 |
1 General Description
Kaufland Label product is a part of the SOLUM Electronic Shelf Label (ESL) System, which includes Label, Gateway, and Remote Controller. The ESL System electronically displays customer content (i.e. price, product, and promotion information) on the Labels, which have traditionally been printed or written on paper in places such as retail markets and warehouses.
Kaufland Label wirelessly receives data from the Gateway and updates the display with the new information provided.
Kaufland Label is based on Bluetooth Low Energy (BLE) for low power wireless communication applications. It consists of an RF transceiver, RF circuitry and the ARM Cortex M3 MCU offering BLE based network protocol, MAC protocol and other peripheral devices.
Figure 1. ESL System: A diagram illustrating the SOLUM ESL System architecture. Key components include the ESL Dashboard (for monitoring and reporting), API for integration, Database for data management, Application layer (handling scheduling, rendering), and Load-Balancer for high availability. Communication occurs via TCP/IP Network and BLE. A PDA/Mobile Web Application facilitates tag assignment and product info. The system also features an ESL Gateway for tag management and updates, and a Legacy System for product data. The network protocol is 2.4GHz SOLUM Proprietary.
1.1 Features
- Display: E-Paper Display (EPD) Active Type
- Sizes: 3.5"
- Display Color: BWRY (Black, White, Red, Yellow)
- Wireless Frequency: 2.4 GHz Unlicensed ISM band
- Communication Protocol: BLE physical layer with SOLUM proprietary protocol
- Battery operated low power consumption
- NFC (13.56MHz): NFC Forum Type 2
- Up to 7 page display screens
- RoHS compliant
1.2 Typical Applications
- Retail industry with electronic displays, platforms, solutions and services
- Intelligently communicating, managing, and optimizing price and product informations
- Warehouse & factory picking labels
1.3 Appearance
Figure 2. SOLUM ESL Line-Up: An image displaying a SOLUM ESL tag showing product details. The example shows 'Blucolli 2 Stück' with a price of '2.49' and a sale price of '2.19', indicating a '-12%' discount.
2 Specification
This section details specifications of each ESL by size. ESLs are identified by the diagonal measurement of the display in inches. For example, a 3.5" ESL is referring to an ESL with the diagonal display dimension of 3.5".
2.1 Product Specification
| Item | Description |
|---|---|
| Label Dimensions | 3.5": 3.11 x 1.44 x 0.49 inches (100.2 x 49.6 x 13.1 mm) |
| Display Dimensions | 3.5″: 3.19 x 1.50 inches (81.02 x 37.98 mm) |
| Display Resolution | 3.5": 480 x 224 Pixels (155 dpi) |
| Label Weight | 3.5": 49.7g / 1.8oz The above label weight are subject to change. |
| Viewing Angle | Nearly 180° |
| Display Colors | BWRY (Black, White, Red, Yellow) ** color options are not available for all sizes. BW (Black, White) |
| Battery | Type and quantity of batteries defer based on ESL CR2450 Lithium Battery 2pcs: 3.5" |
| Wireless Communication | Wireless communication based on IEEE 802.15.4g 2.4GHz Unlicensed ISM band |
| Communication Distance | 98 feet (30m) radius Line of Sight |
| Security | 128-bit AES Encryption |
| Compliance | IC, FCC, CE, UKVA, KC, RoHS, WEEE |
| Operating Temperature | Nominal ESLs BWRY: 32°F ~ 104°F (0°C ~ 40°C) @45~70% RH |
| Storage Temperature | Freezer BW: -25°C ~ 0°C / -13°F ~ 32°F 32°F ~ 104°F (0°C ~ 40°C) @45~70% RH |
2.2 Radio (RF) Specification
| Item | Parameter | Specification | Unit | Condition | ||
|---|---|---|---|---|---|---|
| Min | Typ | Max | ||||
| Tx | Tx Power | 4 | dBm | |||
| [Carrier Frequency Offset and Drift] | -75 | 0 | 75 | kHz | total current at max Tx Power | |
| Rx | Receiver Sensitivity | -85 | dBm | PER < 5% | ||
| Tx Current | 10 | mA | ||||
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: A diagram indicating the position of the NFC antenna on the ESL tag.
2.4 Features
Some of the features of SOLUM ESL.
- Low power consumption
- 'Real time' update speed
- SOLUM proprietary protocol communication with SOLUM Gateway for added security
| Item | Description |
|---|---|
| LED | 7 color |
| Usable Pages | 7 pages |
| IP Rating | IP67 |
| NFC | NFC Forum Type 2 |
| Housing Bezel Color | Gray(RAL7024) |
2.5 Label Marking
Figure 8. ESL Labels (Product): An image showing the labels on the back of an ESL product, including certification marks (UK CA, CE, KG), FCC ID, IC, Model Name (ELM35R3C4C), Manufacturing Date (MFD), and country of origin. It also details the model number structure for Display Size, Housing Color, ESL Display Color, and ESL Tag Type.
ESL specific information can be found on the sticker label located on the back of the ESL. Information displayed are but not limited to: IC, FCC ID, Model, Manufacturing Information, ESL Media Access and Control (MAC) Address.
1) Model: EL-①②③R3④⑤⑥ (i.e. ELM35R3C4C)
- ①②③: ESL Display Size (M35=3.5")
- ④: Housing Color (C= Gray)
- ⑤: ESL Display Color (4 = Yellow (BWRY))
- ⑥: ESL Tag Type (C: LED + NFC)
| Size | Model Name |
|---|---|
| 3.5" | ELM35R3C4C |
1) MFD (Manufacturing Date): [Mon.DD.YYYY]
2) S/N: Serial Number Information
Figure 9. ESL Labels (MAC): An image of a MAC label sticker showing 'MAC: 12 digits' with dimensions of 31 x 3 mm.
MAC Label stickers can be found in multiple areas of the ESL. They are to be scanned for operation. If the ESL is not assigned to a product, the MAC barcode and 12-digits code will be shown on the display. Dimensions can be found in the image below.
3 Reliability Test
High Temperature Operation
Low Temperature Operation
High Temperature/Humidity Operation
High Temperature Storage
Temperature Shock (Storage)
ESD
Package Drop Test
Package Random Vibration Test
| Test Item | Test Condition | Pass Criteria |
|---|---|---|
| High Temp Resistance | 60°C / 35%, 240hrs | Normal operation after test |
| High Temp Operation | 40°C / 35%, 240hrs | |
| Thermal Shock | -25°C (for 30mins) ~ 60°C (for 30mins) for 240 cycles | |
| High Temp & Humidity Operation | 40°C / 70%, 240hrs | |
| Low Temp Operation | Normal ESL: 0°C (240hrs) Freezer ESL: -23°C (240hrs) |
|
| ESD Test | Air ±10KV, 150pF, 330Ω, 10 times/Point | |
| RF Sensitivity (Communication Distance) | Gateway <-> Tag distance: 100 meters | Tag receives RF signal from Gateway. |
4 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 32°F ~ 104°F (0°C ~ 40°C) @45~70% RH environment and should be installed within 90 days of receipt.
4.1 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.
4.2 Storage and Use
- The product is shipped in sleep-mode (white screen), so it should be activated through NFC remote control or mobile app.
- 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 (BWRY), 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.
4.3 Product Cleaning
For Spray Cleaning:
- Lightly spray all surfaces and wait a few seconds.
- Gently wipe clean using a cloth or tissue.
- Let the labels dry.
Diagram shows spraying a cleaning solution onto an ESL and wiping it with a cotton cloth.
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:
- Stand or lay down the labels.
- Wipe using wet tissues.
- Let the labels dry.
Diagram shows two wet wipe packages.
4.4 Battery Replacement
Audience
- Authorized personnel with the following knowledge are allowed to replace the battery: Battery / Electronic assemblies (e.g. circuit board) / Compliance with the instruction
- Note: Warranty is voided if battery is replaced by unauthorized personnel.
- (When batteries require replacement, please contact the authorized personnel)
Instructions
- Risk of short circuit if battery is incorrectly installed/stored.
- Check that hands are dry before and at all times during the replacement process.
- Keep batteries away from children and infants.
- Do not heat, charge, bend, drop, short-circuit and/or disassemble battery.
- Do not mix together used and new batteries or different battery types.
- Note: Battery rarely has minor stain or leak.
Steps
- Open the battery cover.
- Take out the batteries.
- Put in the new batteries.
- Check the batteries direction.
- Put back in the battery cover.
Battery Direction
| Top: | (+) Positive |
| Bottom: | (-) Negative |
| Red Wire: | (+) Positive |
| Black Wire: | (-) Negative |
Figure 11. Battery Direction: Illustrates the positive (+) and negative (-) terminals of a CR2450 battery and the corresponding wire colors (Red for +, Black for -).
5 Battery Handling Guide
5.1 Avoiding hazards in lithium battery handling
-
Do not short circuit (Fig. 1)
- Direct connection of plus (+) and minus (-) poles may result in leakage, heat generation, explosion and/or fire.
- Do not store and/or carry batteries with metallic items, such as a necklace.
-
Do not stack and/or jumble batteries (Fig. 2)
- Stacked and/or jumbled batteries may cause a short circuit and/or forced discharge from contact with other batteries.
- This may result in leakage, heat generation, explosion and/or fire.
-
Do not make forced discharge batteries (Fig. 3)
- On a forced discharge by an external power source, the battery voltage goes to negative and this causes gas generation in inside of the battery.
- This may result in leakage, heat generation, explosion and/or fire.
Diagrams illustrating hazards: Fig. 1 shows a short-circuited battery marked with 'DANGER' ❌. Fig. 2 shows stacked batteries marked with 'DANGER' ❌. Fig. 3 shows examples of forced discharge with a battery connected to a charger, marked with 'DANGER' ❌.
5.2 Proper Storing and Disposing of Lithium Batteries
■ To minimize risk of fire and explosion of batteries, be sure to follow the instructions below.
NG section: Shows incorrect battery storage methods: loose batteries, batteries in a vinyl bag, short-circuited battery, battery connected to charger, all marked with ❌.
OK section: Shows correct battery storage methods: batteries in a tray with tape sealing, tape attached to +/- electrodes, all implied as correct. Also shows proper use of battery tray: batteries placed in slots, trays stacked in same orientation, empty tray on top, stack sealed with tape.
■ Proper use of battery tray is outlined below.
With batteries properly placed into each tray slot → stack the trays in the same orientation → use an empty tray on the top stack → tape the stack together to avoid falling apart.
■ Follow local regulations for proper battery disposal guideline.
6 Certifications
6.1 FCC
FCC ID: 2AFWN-ELM35R3C4C
FCC Information to User
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Caution
THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE.
SUCH MODIFICATIONS COULD VOID THE USER'S AUTHORITY TO OPERATE THE EQUIPMENT.
IMPORTANT NOTE : FCC RF Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
6.2 CE
We hereby declare under our sole responsibility that the electrical product above is in compliance with the essential requirements of the Radio Equipment Directive (2014/53/EU) by application of EN IEC 62368-1:2020+A11:2020EN 62479:2010
- EN 300 328 V2.2.2
- EN 300 330 V2.1.1
- EN 62479: 2010
- EN 301 489-1 V2.2.3
- EN 301 489-3 V2.3.2
- EN 301 489-17 V 3.2.0
and the Directive (2011/65/EU) on the restriction of the use of certain hazardous substances in electrical and electronic equipment by application of EN 62321 Series.
Manufacturer : SOLUM CO., LTD
6.3 ISED
Address: 7F, 2354, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea
IC: 22800-ELM35R3C4C
ISED Information to User
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, meme si le brouillage est susceptible d'en compromettre le fonctionnement.
Attention: Tout changement ou modification non expressément approuvé par le fabricant peut annuler le droit de l'utilisateur à utiliser l'équipement.
exposition aux rayonnements radiofréquences. Pour se conformer aux exigences de conformité de l'exposition IC RF, une distance de séparation d'au moins 20 cm doit être maintenue entre l'antenne de cet appareil et toutes les personnes.
This device complies with Industry Canada NRCs applicable to licence-exempt radio devices. The operation is authorized under the following two conditions: (1) the device shall not cause interference, and (2) the user of the device shall accept any radio interference suffered, even if the interference is likely to compromise its operation.
Caution: Any change or modification not expressly approved by the manufacturer may void the user's right to use the equipment.
exposure to radiofrequency radiation. To comply with the ICRF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons.
- -PMN(Product Marking Name) ESL Label
- -FVIN(Firmware Version Identity Number) V38
6.4 KC
Certified Entity Name: SOLUM CO., LTD.
Product Name: Ultra-low power radio equipment (for wireless data communication system)
Model Name: ELM35R3C4C
Manufacturer: SOLUM CO., LTD.
Country of Manufacture: Korea, Vietnam
Manufacturing Date: 2024...
