1、12864 LCD smart controller for 3D printer. 2、Supports for RAMPS 1.4 control board. Ramps plug and play, but firmware need to be modified for support. 3、Built-in encoder allows you adjusting the parameter and selecting file to print. 4、3 inch large size screen, clear white characters with blue backlit. 5、Support Chinese font, Chinese menu can be displayed by modifying Marlin firmware. Features: 12864 LCD smart controller for 3D printer. Supports for RAMPS 1.4 control board. Ramps plug and play, but firmware need to be modified for support. Built-in encoder allows you adjusting the parameter and selecting file to print. 3 inch large size screen, clear white characters with blue backlit. Support Chinese font, Chinese menu can be displayed by modifying Marlin firmware. Specifications: Type: LCD screen Model: 12864 Screen size: about 3 (inches) Brightness: highlight Contrast: 6.0 Resolution: 128x64 Color: background color: blue, display font color: white Dot pitch: about 0.44 * 0.6 (mm) / 0.02 * 0.02in Package weight: 159g Package List: 1 x 12864 LCD Screen with 2 Cable