Product overview 2.42 inch OLED display module, model 201a LED 12864 LCD screen, driven by the SSD1309 controller and using an SPI serial interface. 2025 design focused on reliable, precise, and stable performance for embedded and industrial applications. Key benefits Compact resolution display: 2.42 inch diagonal with a 128 by 64 pixel layout provides clear text and graphics in a small footprint. Simple integration: SPI serial interface reduces wiring and MCU pin usage for faster prototyping and easier installation. Reliable and stable operation: Designed for consistent performance as a reliable electronic component suitable for demanding projects. Flexible compatibility: Works with common SPIcapable microcontrollers and development boards without complex adaptation. Clear visual output: OLED panel delivers sharp contrast and wide viewing angles to improve readability in varied lighting conditions. Important attributes Function: Graphic display module for text, icons, and simple graphics driven by the SSD1309 controller. Interface: SPI serial port for command and data transfer. Size: 2.42 inch diagonal screen, 128 by 64 pixel resolution. Module ID: 201a LED 12864 LCD screen designation. Performance: Precision rendering and stable operation designed for repeatable results in embedded systems. Construction: OLED display panel mounted on a compact PCB module for easy mounting and wiring. Typical applications Portable instruments: Use in handheld meters and diagnostic devices where space is limited and clear readout is required. Control panels and industrial equipment: Integrate into machine interfaces, status displays, and process monitors that need dependable, longterm operation. Prototyping and consumer electronics: Ideal for DIY electronics, prototypes, and compact product designs that require a small graphical display. Why choose this module This 2.42 inch OLED module combines a compact physical size with a practical 128 by 64 pixel resolution and the SSD1309 controller for straightforward SPI communication. It is suited to projects that require a precise, reliable display without adding complexity to the control system.