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Bluetooth 4.2 inch Electronic Price Display ESL E-Paper Pricing E-Ink Labels

Bluetooth 4.2 inch Electronic Price Display ESL E-Paper Pricing E-Ink Labels
Bluetooth 4.2 inch Electronic Price Display ESL E-Paper Pricing E-Ink LabelsBluetooth 4.2 inch Electronic Price Display ESL E-Paper Pricing E-Ink LabelsBluetooth 4.2 inch Electronic Price Display ESL E-Paper Pricing E-Ink Labels
group name
Retail Electronic Shelf Labels Solution
Min Order
50 piece
brand name
Sertag Electronic shelf labels Manufacturer
model
SETPB0420R
Nearest port for product export
Dalian, Shenzhen, Hongkong
Delivery clauses under the trade mode
FOB, CIF
Acceptable payment methods
T/T
update time
Mon, 06 Apr 2026 06:27:26 GMT

Paramtents

  • Display Size 4.2 inch

  • Display Technology E-ink Display

  • Working Frequency 2.4G BLE

  • Battery Capacity 2400mAh (CR2450*4)

  • Battery Life 2~3 years

  • Communication Radius 10m

Packging & Delivery

  • Min Order50 piece

Briefing

e-ink display tags , bluetooth electronic shelf labels,digital price tag,Electronic Price Display,epd, E-Ink Epaper Labels

Detailed

Bluetooth 4.2 inch Electronic Price Display ESL

The 4.2 inch electroinc price display ESL is a cost-effective and easy-to-deploy digital pricing solution designed for modern retail environments.

Traditional paper labels require frequent manual replacement, which is time-consuming, error-prone, and inefficient. This 4.2 inch ESL offers a smarter alternative by enabling real-time price updates, centralized content management, and improved operational efficiency.

With Bluetooth communication and mobile app control, store staff can update labels anytime, anywhere—without relying on base stations or complex infrastructure. This makes the BLE electronic label particularly suitable for retailers looking for a lightweight, flexible, and low-cost ESL deployment solution.
bluetooth 4.2 inch electronic price display

Bluetooth 4.2 inch Electronic Price Display Feature

📱 Mobile-Based Control – No Infrastructure Required

Unlike traditional ESL systems that rely on base stations, this ESL solution allows direct communication between mobile devices and labels via Bluetooth. Store staff can use a smartphone or tablet to update prices and product information instantly, greatly simplifying deployment and reducing initial investment costs.

🔋 Ultra-Low Power E-paper Technology

The e-ink display consumes power only when content is refreshed, ensuring extremely low energy usage. With a battery life of up to 2–3 years, this ESL solution minimizes maintenance frequency and reduces long-term operational costs, making it ideal for large-scale deployments.

⚡ Fast and Reliable Wireless Communication

Utilizing 2.4GHz BLE technology, the e-ink labels support stable and efficient data transmission within a typical range of up to 10 meters.
This ensures quick updates and reliable performance in dynamic retail environments.

📃 Wide Viewing Angle & Paper-Like Readability

Unlike traditional LCD screens, the e-paper display offers a glare-free viewing experience with a wide viewing angle. The content remains clearly visible under strong lighting conditions, closely resembling printed paper and enhancing user comfort.

Bluetooth Electroinc Shelf Label System

The Bluetooth electronic shelf label system is built on a flexible and scalable architecture that enables efficient data management and real-time communication between the server and display devices.

1. Content Management via Mobile App
Store staff use a dedicated mobile application to edit and manage product information, pricing, and display templates.

2. Bluetooth Communication (2.4G BLE)
The mobile device communicates directly with ESL tags via Bluetooth, sending data packets without the need for gateways.

3. Instant Label Update
Once the label receives the data, the e-ink screen refreshes and displays the updated information clearly and consistently.
bluetooth electronic price display system

Bluetooth Electronic Price Display Customer Case

🛒For Sample or Individual Purchase

This product can be purchased directly from our official consumer store.
For project-based or large-quantity orders, please contact us.

4.2 inch e-ink epaper labels
Product Model
SETPB0420R
Display Technology
E-ink
Working Frequency
2.4G
Dimensions (mm)
104.5*87.5*12.7
Display Area (mm)
84.8*63.6
Screen Resolution
400*300
Pixel Size (mm)
0.212x0.212
Working Temperature
0-50℃
Battery Capacity
2400mAh (CR2450*4)
Battery Life
2~3 years
Visual Angle
Nearly 180°
Display Color
Black, white, red
Communication Radius
10m
Communication Equipment 
Android phone, iPhone, table
Over-the-air Firmware Updates
Yes
Supported Content Format
Text, picture, QR code, barcode
Template Design
Yes
4.2 inch BLE Electronic Price Tags SETPB0420R Specification
Bluetooth ESL User Guide