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4.2" Smart Bluetooth E Ink Shelf Label – Budget-Friendly ESL | ET0420
4.2 Inch E-paper Digital Price Tag Customizable ESL
This demonstration video is provided for illustrative purposes and may not reflect all product features.
This 4.2-inch smart tag features a clear and vibrant e-paper display, available in mono-color, tri-color, and four-color options. It is ideal for retail stores, supermarkets, and other commercial spaces, offering easy remote updates through a gateway or smartphone Bluetooth. This allows you to display any content you choose effortlessly. Energy-efficient and durable, these tags can be customized to match your store's branding and come in various sizes. They provide a cost-effective and sustainable solution for modernizing your pricing strategy and reducing operational costs.
Breakdown of ESL Solution

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E Ink Product Feature |
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● The standard protection rating is IP65, which is fully dustproof and water-resistant. Optional ratings of IP54 and IP68 are also available. ● Data Transmission: Data is sent in actual data format, not as an image. A single server can manage over 50,000 stores. ● We will select the appropriate communication protocol based on the customer's needs, ranging from Bluetooth with a 30-meter radius to long-range WloTa or LoRa 433 transmission up to 2 km. ● Pricing: We follow the Amoeba management model, ensuring the lowest prices in the market. |
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Choose Your Perfect Solution: Smartphone APP or Gateway Version
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When using a small number of electronic tags, you don't need cloud servers, ESL management systems, or access points—just a single Android smartphone is sufficient to easily update prices and give your store a modern, sophisticated appearance. |
For a larger number of electronic tags, the gateway allows for centralized management and remote updates. This setup reduces maintenance costs, saves time, and enhances the store's overall image. |
We offer a full range of mounting solutions

Click to learn more and let our specialists help you find the perfect fit!
E Ink Product Application
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Retail StoresDynamic pricing and promotions |
SupermarketsFresh food pricing and inventory |
WarehousesInventory management and tracking |
HealthcarePatient information and room signage |
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If these products don't meet all of your requirements, we offer customization options to better suit your needs.
We aim to make electronic shelf labels more than just price displays
| With our API interface provided to third parties, it can integrate with any application system. Take advantage of our years of hardware expertise to ensure seamless integration with your system. In fact, electronic shelf labels are no longer just price tags. | ||
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Here’s an example scenario: Interactive Name Tags for Conferences & Trade Shows
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