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WiFi 4.2 inch E ink Store Price Tags Interface Integration Electronic Shelf Label Supermarket

WiFi 4.2 inch E ink Store Price Tags Interface Integration Electronic Shelf Label Supermarket
WiFi 4.2 inch E ink Store Price Tags Interface Integration Electronic Shelf Label SupermarketWiFi 4.2 inch E ink Store Price Tags Interface Integration Electronic Shelf Label SupermarketWiFi 4.2 inch E ink Store Price Tags Interface Integration Electronic Shelf Label Supermarket
group name
Retail Electronic Shelf Labels Solution
Min Order
1 piece
brand name
Sertag Electronic shelf labels Manufacturer
model
Wi-Fi Digital Price Tag SETPW0420_V2
Nearest port for product export
Dalian, Shenzhen, Hongkong
Delivery clauses under the trade mode
FOB, CIF
Acceptable payment methods
T/T
update time
Fri, 10 Apr 2026 11:59:24 GMT

Paramtents

  • Display Size 4.2inch

  • Communication 2.4G WiFi b/g/n

  • Battery AA*4

  • Battery Life Up to 1 year of autonomy (For 4 refresh per day)

  • Working Temperature 0~40℃

  • Light & Button 1 x tri-color LED & 2 x buttons & 1 x reset button

Packging & Delivery

  • Min Order1 piece

Briefing

4.2inch Wi-Fi e ink store price tag, no base station, battery powered, wireless connectivity, for grocery, supermarket.

Detailed

WiFi 4.2 inch E-ink Store Price Tags for Supermarket

This 4.2 inch tri-color WiFi e-ink store price tag combines wireless connectivity, LED-button functionality, and interactive features in one device, offering a more flexible, cost-effective, intelligent smart retail solution, helping stores digitize pricing, improve operational efficiency, and enhance the in-store customer experience.

Powered by standard AA batteries, the 4.2 inch e-ink price tag delivers long-lasting performance with ultra-low power consumption. The tri-color e-ink display (black, white, red) provides high-contrast, paper-like readability, ensuring that prices, promotions, and product information remain clear and consistent across all shelve. In addition, the built-in LED indicators and buttons enable interactive retail applications such as promotional guidance, staff assistance, or smart shelf management, further improving store efficiency.

With WiFi connectivity and no need for a base station, retailers can quickly deploy the ESL system across shelves without complex infrastructure. This makes it especially suitable for supermarkets, chain stores, and specialty retail shops looking for a flexible and scalable pricing solution.
4.2 inch wifi electronic labels

Why Choose 4.2 inch E-ink Store Price Tag?

4.2 inch WiFi E-ink Price Tag
This video shows the refresh status of a 4.2 inch WiFi electronic shelf label.

💻 Real-time Price Updates for Retail Efficiency

Instantly update prices, promotions, and product details across all shelves via WiFi, eliminating manual label replacement and ensuring pricing accuracy at all times.

🔋 Widely Available Batteries – No Special Maintenance Required

AA batteries are globally available and easy to source, eliminating the need for dedicated charging equipment or maintenance planning.

📶 No Base Station Required

Direct WiFi communication removes the need for additional gateways, making installation faster and more flexible—ideal for both single stores and multi-store chains.

📃 Low Power Consumption E-ink Display

The e-ink screen consumes power only when updating content, allowing extended battery life while maintaining clear, paper-like readability.

💡 Built-in LED Lights & Buttons

Integrated multi-color LED indicators and physical buttons enable pick-to-light, task confirmation, or status alerts, improving operational efficiency in retail and warehouse scenarios.

WiFi Electronic Shelf Label System Architecture

The system uses WiFi to connect each electroinc label directly to the management platform—no gateway required. This allows retailers to update prices in real time, reduce setup complexity, and easily scale across stores.
Wifi ESL System Architecture
🛒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 store price tags wifi
Product Model 
SETPW0420_V2
Display Technology
Tri-colors E-ink
Communication
2.4G WiFi b/g/n
Screen Resolution
400*300
Dimensions (mm)
104.95 * 95.93 * 15.2
Display Area (mm) 
84.6*63.4
Pixel Size (mm)
0.212*0.212
Working Temperature
0~40℃
Display Color
Black, white, red
Battery Capacity
AA*4
Visual Angle
180°
Battery Life
1 year (4 refreshes/day)
Support Remote Control
Yes
Support Interface Docking
Yes
Wireless Firmware Update
Yes
Light & Button
1 x tri-color LED & 2 x buttons & 1 x reset button
Supported Content Format
Text, picture, QR code, barcode
4.2 inch Wi-Fi Electronic Label SETPW0420_V2 Specification
Template Interface Calling Instructions
Wi-Fi E-ink Electronic Label Operation Guidance

WIFI Electronic Labels Working Status Description
Wi-Fi Electronic Tag User Manual
WIFI Electronic Tag API Integration Manual V1.0.6