This Smart Controller contains a SD-Card reader, an rotary encoder and a 128×64 LCD display. You can easy connect it to your Ramps board using the "smart adapter" included.
After connecting this panel to your Ramps you don't need your pc any more, the Smart Controller supplies power for your SD card. Further more, all actions like calibration, axes movements can be done by just using the rotary encoder on the Smart Controller.
Print your 3D designs without PC, just with a g-code design stored on the SD card.
Compares to the 20×4 Smart LCD Controller With Adapter, this 128×64 screen can display much more information, which would help for you run the 3D printer without a computer.
You can turn on the light time to do long or short form of the adjustment TRIMM R4100K from 10 seconds to 2 minutes If you use a print job at night and parts department, which means that the new modifications LCD backlight would be suitable for you