Driven by the dual momentum of digital transformation and green, low-carbon development, commercial display landscapes are undergoing a profound shift from "static graphics" to "smart interactions." From traditional paper to electronic screens, and now to eco-friendly, visually expressive e-ink paper technology, commercial displays are evolving to become smarter, lower in carbon emissions, and more visually stunning.
As a pioneer in the industrial IoT sector, MinewTag has once again broken boundaries with the launch of the RS315, a 31.5-inch, six-color large-screen digital signage powered by E Ink Spectra 6 technology. This smart display solution delivers both high visual impact and green energy efficiency, perfectly tailored for commercial poster displays, public information announcements, and smart information broadcasting.
Designed as a digital powerhouse for diverse indoor environments, the RS315 integrates cutting-edge E Ink Spectra 6 color e-paper technology with high-efficiency multi-mode wireless communication. It completely eliminates the high energy consumption and cost constraints of traditional paper posters, while redefining the standards of smart commercial displays with stunning color performance and ultra-long battery life.

6-Color Wide Gamut: A Visual Feast of 60K+ Colors
The RS315 features a 31.5-inch HD E Ink Spectra 6 screen, delivering crisp, detailed imagery that rivals high-quality color printing. With a high resolution of 2560*1440 and a viewing angle approaching 180 degrees, the large 31.5-inch display remains sharp and highly legible even under bright ambient light, creating a commanding visual impact.
The device supports six primary display colors: black, white, red, yellow, blue, and green. Leveraging advanced algorithmic dithering and color-mixing technology, it achieves a wide color gamut featuring over 60,000 vivid colors. Whether it’s the vibrant brand tones in a commercial poster or the clear information hierarchy in public announcements, the RS315 renders every detail with rich, true-to-life accuracy.
Multi-Mode Wireless Communication for Efficient Remote Management
In the age of intelligent connectivity, efficient content management is core to commercial displays. The RS315 features a built-in multi-mode wireless communication module supporting BLE, LTE-Cat 1, and Wi-Fi. Users can easily configure parameters and dispatch image assets remotely via a cloud platform or mobile app, completely eliminating the tedious and inefficient process of manual paper poster updates.
Furthermore, the RS315 is equipped with a dedicated global LTE-Cat 1 module compatible with communication frequency bands in most regions worldwide. Whether managing multiple domestic chain stores or deploying in overseas markets, it ensures seamless connectivity and effortless remote control—making global expansion hassle-free.

Offline Storage & Ultra-Long Battery Life for Reliable, Worry-Free Operation
The RS315 is engineered with real-world scenarios in mind. It supports local storage via an external TF card, allowing content to be saved offline and displayed in an automatic carousel. Even during network interruptions, the signage continues to play content according to its preset schedule, greatly enhancing system reliability in complex network environments.
In terms of power consumption, the RS315 houses a high-capacity rechargeable lithium battery. Capitalizing on the bistable nature of electronic paper—which consumes power only during screen refreshes—the device achieves ultra-low power consumption. Based on two screen refreshes per day, it boasts a standby time of up to 240 days. This low-carbon, energy-saving design significantly reduces the labor and time costs associated with operations and maintenance.
Versatile Adaptation, Empowering Diverse Industries
From shopping mall storefronts to building elevators, and from corporate offices to public lobbies, the RS315 can be widely deployed across diverse scenarios thanks to its unique combination of large size, full-color display, remote management, and ultra-low power consumption. As the new flagship product of the MinewTag ESL series, the RS315 is more than just a smart display terminal—it is a core device for industries aiming for digital and low-carbon upgrades in information display.

Where color, intelligence, and green technology converge, the launch of the MinewTag RS315 smart digital signage is not only a successful implementation of color e-paper technology in large-scale commercial displays, but also a digital staple for enterprises practicing ESG principles and driving green, low-carbon transitions. An efficient, vivid, and sustainable future for smart information display is here, redefining what is possible in commercial signage.






