21.5-Inch Large-Format Linux Monitor for Smart City Applications and Digital Signage

The 21.5-inch Linux-based display is designed to serve a wide range of applications in the smart city ecosystem, providing seamless integration into digital signage systems, public information displays, and interactive kiosks. With its full HD resolution (1920 x 1080) and vivid 16.7 million colors, it is perfect for displaying real-time data, advertisements, or public announcements in high-traffic areas like train stations, bus terminals, and shopping centers. The monitor’s high contrast ratio of 3000:1 ensures that content remains clear and engaging, even in areas with varying ambient lighting, while the wide viewing angles guarantee that the display remains visible from multiple directions. Additionally, the integrated audio system ensures that auditory information, like emergency alerts or promotions, is broadcast effectively in public spaces.

This large-format 21.5-inch screen is ideal for retail environments where businesses seek to enhance customer engagement through dynamic content. Its 16:9 aspect ratio and fast response time of 6.5ms make it a powerful tool for digital signage, allowing retailers to show interactive product promotions, price updates, and special events. The built-in Wi-Fi and Ethernet connectivity allow seamless integration with content management systems for remote updates, making it easy to schedule and display time-sensitive promotions. With its energy-efficient power usage and low standby power loss, it is a cost-effective option for continuous operation in commercial settings, ensuring a long-lasting investment.


For transportation hubs and smart city infrastructure, the 21.5-inch display offers a perfect platform for displaying essential real-time information, such as bus schedules, flight updates, and wayfinding maps. Its robust build ensures it can withstand a range of environmental conditions, making it suitable for both indoor and outdoor applications. The screen’s adjustable Ethernet connection and USB ports provide flexibility in system integration, while the built-in speakers allow for broadcasting important messages in emergency situations or routine announcements. Whether placed in a subway station, airport terminal, or municipal building, this display excels at enhancing public communication and improving the flow of information within bustling urban environments.

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Focus on indoor and outdoor commercial LCD display application, ZXT LCD supply various video display products from global market. The founder of Shenzhen ZXT LCD Technology Co.,Limited, Mr.Kevin always insist on best quality and reasonable price as company principle. We would like to work closely with our business partner from all over the world to keep a long-term win-win business relationship.

Stretched LCD Display, LCD Video Wall,Outdoor Digital Signage, LCD interactive whiteboard, Touch screen kiosk, multi-touch Table, Self-service kiosk, CCTV Monitor, Open frame Display, Transparent LCD Display and 3D Holographic Display,OLED screen is our main product.

On 2018, ZXT LCD expand plant scale to 800 square meters and increase new production lines to meet the growing demand from global Market. In order to control our product quality, we set up dust-free anti-static standard workshop of international advanced production and testing equipment. And our product achieved CE approval, Rohs certification for many places all over the world.

End user, System integrator, trader, retailer or distributor from multimedia business company, advertisement company or agency,PC engineer or IT solution Provider are all welcome to join us!

Customer-first approach: We focus on our customers’ experience and success, always doing what’s best for our customers as well as their customers.

Complete solution: We provide the right combination of services, expertise and technology to meet your business goals.

Our company have been in this line of business for more than 9 years experience. In the Past three years, ZXT LCD have served more than 200 clients from different countries and regions. with the same beliefs on kind-hearted and responsible, which make us go further in future cooperation.