Wide viewing angles and paperlike readability improve visibility in low light, making the module suitable for digital signage, sensor dashboards, and batteryoperated gadgets. SPI communication and energyefficient design enable seamless integration into embedded systems and support flexible prototyping. A reliable display solution for developers, electronics enthusiasts, and engineers targeting intelligent home devices, portable terminals, and industrial elabel applications. The PCBbased eink panel delivers 800x480 pixel clarity with four grayscale levels, enabling detailed schematics and clear data visualization in energysensitive embedded systems. Key specifications: Display type: PCBbased eink panel Resolution: 800x480 pixels Grayscale: 4 levels Interface: SPI Power: energy efficient; suitable for battery operation Viewing: wide viewing angles; paperlike readability Use scenarios: Digital signage and information displays in retail or public spaces where low power is important and readability is essential. Sensor dashboards for smart home or building automation, showing realtime readings and schematic visuals with minimal power draw. Portable terminals and industrial elabels for equipment status, part information, or process data in energysensitive environments.