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4.2inch BLE Digital Shelf Label Tri-color Eink Price Tags for Grocery Store

Categories	Bluetooth Electronic Shelf Labels
Brand	Sertag Electronic shelf labels Manufacturer
Model	Bluetooth Digital Price Tag SETB0420R
Display Size	4.2inch
Dimension	103.0x92.0x8.0mm
Display Resolution	400*300
Communication Band	2.4G 16-way wireless
Battery	Li-Ion Battery 850mAh, 3.0V replaceable
Display Color	Black, white and red
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Update Time	Jul 13,2025

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Detail Information

4.2inch BLE Digital Shelf Label Tri-color Eink Price Tags for Grocery Store

Feature

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

Model	SETB0420R	Screen Size	4.2 inch
Dimension	103x92x8mm	View Area	83x62mm
Display Resolution	400x300	Display Type	Bi-stable EPD (E-ink Display)
Display Color	Black and white colors	Communications	2.4G Bluetooth 5.0 wireless
Operating Temperature	0~50℃	Storage Temperature	-20~70℃
Weight	50g	Frame Colors Available	Yes (MOQ applies)
Appearance	Standard unit available with white frame	Unit Identifier Barcode	Recognized by scanner or labeling on back
Battery Life	2~3 years for one battery	Replaceable Batteries	Li-Ion Battery 850mAh, 3.0V, Replaceable

Bluetooth ESL Software/hardware Architecture 1

ESL Gateway not only an ESL manager. It’s an open platform to make your ESL and 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;

Bluetooth ESL Software/hardware Architecture 2

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

Bluetooth ESL Advantages

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

4. Two-way authentication ensures device security

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.

4.2inch BLE Digital Shelf Label Tri-color Eink Price Tags for Grocery Store

4.2inch BLE Digital Shelf Label Tri-color Eink Price Tags for Grocery Store

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