Welcome to our store! 1. [LCD TOUCH SCREEN] The offline controller is equipped with a 2.8-inch LCD touch screen, making CNC machine control clearer and more convenient. 2. [APPLICABLE MODEL] This offline controller is suitable for 3018, 3020, 4540 series CNC routers and 3-axis engraving machines, with good compatibility. 3. [SMALL MEMORY CARD] The memory card contains some files for testing, and the controller has internal functions with the computer control program. 4. [HIGH EFFICIENCY] This controller helps you easily control the engraving machine without connecting a computer, greatly improving work efficiency. 5. [EASY TO USE] Equipped with a connecting cable and USB card reader, the CNC controller is easy to install and use, with a wide range of applications. Item Type: CNC Offline Controller Applicable Model: For 3018 3020 4540 series CNC 3-axis engraving machine Connection Port: 8-pin Software Type: For GRBL offline controller Small Memory Card: Included (installed on the product) 1 x Offline Controller 1 x Connecting Line 1 x USB Card Reader 1 x User Manual Customers are our top priority. If you encounter any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.