Features: 100% brand new and high quality Manual control: Manually adjust the positions of the three XYZ axes as the starting point for engraving, and manually turn the axis on or off. Recording file: GRBL control board can be connected to recording board after the file is saved in offline, no need to connect to computer. Storage file: Offline version is recognized as a USB mass storage device after connecting with computer, and can directly access the recording file . Upgrade to update new firmware to increase high-speed speed, compatible with SD card. Long press Z+ on main page to change language. Package Includes: 1x Offline Controller Specifications: Material: Plastic Size:As Picture Shown Color:White Model: 1.8 inch handle offline screen Power supply type: plug-in power supply Power supply voltage: 110V Input power: 100 No-load speed: 10000 (rpm) note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.