Item Type: CNC Offline Controller Applicable Model: For 3018 3020 4540 series CNC 3 axes engraving machine Connector Port: 8 Pin Software Type: For GRBL offline controller Small Memory Card: Included (installed on the product) Package List 1 x Offline Controller 1 x Connecting Line 1 x USB Card Reader 1 x User Manual 1[LCD TOUCH SCREEN] The offline controller is equipped with 2.8in LCD touch screen, which makes the CNC machine control more clear and convenient. 2[APPLICABLE MODEL] This offline control is suitable for 3018 3020 4540 series CNC router and 3 axes engraving machines, with good compatibility. 3[SMALL MEMORY CARD] The memory card includes some files for testing, and the controller has internal functions with the computer control software system. 4[HIGH EFFICIENCY] This controller helps you easily control the engraving machine without connecting the computer, greatly improving the work efficiency. 5[EASY OPERATION] Equipped with connecting cable and USB card reader, the CNC controller is easy to install and operate, has a wide range of applications.