Description: This product supports backlight switch control, contrast adjustment and offline printing function. Precise mounting holes. Equipped with handwheel, you can choose menu. Features: Use large screen 12864 LCD. Integrated with SD card slot at the back. Put slicing files into the SD card, select the file on the LCD and then you can print it. Equipped with encoder, can realize parameter adjustment and file selection printing. Plug and play on the RAMPS, but need to modify the firmware to support. You can insert an SD card (not included) and print offline. Specifications: Material: PCB Suitable for: 3D Printer RAMPS 1.4 Reprap Size: Approx. 93 * 87 mm / 3.7 * 3.4 in Package Weight: About 168g Package Included: 1 * LCD12864 Controller 1 * Smart Adapter 1 * 70cm Cable (Not including SD card.) 1、Use large screen 12864 LCD. 2、Integrated with SD card base at the back. Put slicing file into the SD card, select the file on the LCD and then you can print it. 3、Equipped with encoder, can realize the parameter adjustment, and the file selection print. 4、Plug and play on the RAMPS, but need to modify the firmware to support. 5、You can insert an SD card (not included) and print offline.