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

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Categories	Retail Electronic Shelf Labels Solution
Brand	Sertag Electronic shelf labels Manufacturer
Model	SETPB0420R
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
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Detail Information

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 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.

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Product Model	SETPB0420R	Display Technology	E-ink
Working Frequency	2.4G	Dimensions (mm)	104.587.512.7
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