4.2inch Bluetooth ESL Supermarket Digital Shelf Label Price Tags

Group Bluetooth 5.0 electronic shelf labels
Min. Order 50 piece
Terms of Payment all
Update Time 2020-09-14
Item specifics
Color Displaywhite black and red
Display Size4.2 inch
Display Resolution400 *300
Communication Band2.4G 16-way wireless
  • Description
  • Product review
4.2inch Bluetooth ESL Supermarket Digital Shelf Label Price Tags
4.20 bluetooth electronic shelf label
Product Description
1. Low energy(BLE)
2. Red /Yellow color available
3. Cloud or local Server based options
4. Bluetooth 5.0 wireless communication
5. 400x300 pixels full graphic, E-Paper displays
6. Perfect for the retails, warehouses, logistics management and meeting system
Software/hardware Architecture 1
This ESL device are managed by our Gateway.
The Gateway using MQTT/JSON open API for third part to easy integrate it.
Software/hardware Architecture 2

This ESL provide open API and can be managed by IOS/android app.




Screen Size




View Area


Display Resolution


Display Type

Bi-stable EPD(E-ink Display)

Display Color

Black and White Colors


Standard unit available with white frame

Unit Identifier Barcode

Recognized by Scanner or Labeling on back

Opereating Temperature


Storage Temperature


Battery Life

2~3yeas for one battery

Replaceable Batteries

Li-Ion Battery 850mAh, 3.0V replaceable




2.4G Bluetooth 5.0 wireless

Frame Colors Available

Yes(MOQ applies)

1.Opening Platform Design

ESL Gateway not only an ESL manager. It’s an open platform to make your ESL and other other sensor easily connect to cloud.

All the interface are opening for third part.

Support third part ESL/BLE device connect to the cloud via BLE GW;
Support third part MQTT server;
2. Self-organized deployed
Once you deployed the ESL(>1000pcs) and Gateway, the relationship between ESL and Gateway will automatic setup within 3~5 minute.
Gateway supports redundant configuration, once one Gateway down, other Gateway(with in same coverage) will automatic take over ESL management within 10 seconds.
Gateway support pool load balance deployed, the Customer Inventory System can select an light load Gateway to update price about ESL.
3.Open API Example:  ESL monitor
If you want to know more i suggest you had better buy demo kit , please see below:

 1) Software and API interface (SQL.Server,Client)

2) AP Base 1 set (with 300-500pcs shelf labels)

3) Electronic shelf labels 

4) Mounting slots

5) API/SDK interface

6) 24 hours skype online

7)  Powerful technical support

4.Two-way authentication ensures device security
To ensure that the devices and gateways are not illegally connected. BLE Gateway and device using Bi-directional MD5 with random authentication.
5.Web portal Configuration
6.Open source code/SDK on Google
1).Gateway integration guidance and gateway installation and configuration guidance.

2). The client software Demo supports the connection of the MQTT server address and is based on the Java1.7 version.

3). Convert the BIN formatted image to the demo of the MQTT JSON message, based on the C language implementation, developed using Visual Studio 2010.

We will continue to update the resources to make your develop more easily.

APP SOLUTION :Connection the ESL using APP

The ESL support bluetooth4.1 and bluetooth 5.0, You can use ipad and iphone to connect to ESL for updates.
We can provide the bluetooth API for manage the ESL.
We also provide IOS  Android demo app for your quick development.  Please noticed that the phone/iPad must support bluetoooth4.1 or bluetooth5.0.