The AT20 is a compact receiving card from NovaStar designed for standard LED display applications. A single AT20 loads up to 256×256 pixels, making it suitable for medium-resolution LED modules and displays. The card features pixel-level brightness and chroma calibration for uniform image quality, quick adjustment of dark or bright lines for simplified maintenance, 3D support for immersive visual experiences, individual gamma adjustment for RGB channels to fine-tune color accuracy, and flexible image rotation in 90° increments for various installation orientations. The AT20 uses high-density connectors that resist dust and vibration, ensuring stable operation in various installation environments. It supports up to 24 groups of parallel RGB data or 64 groups of serial data (expandable to 128 groups), offering flexibility for different LED module configurations. An economical choice for standard LED display installations requiring reliable performance.