Offline Control: With the offline control module, you can control your CNC router without connecting to a computer, allowing you to place the CNC router anywhere you desire, such as garages and workshops. Manual Control: The position of the XYZ axes can be adjusted manually as the starting point for engraving. The module can also manually control the spindle on or off. Easier Access: After inserting the file onto the memory card, the engraving file can be recognized directly. You can also connect the offline module to a computer via a micro USB cable and store files directly. Ideal Match: The offline module is perfectly compatible with 3018, 3018 PRO CNC routers, and other general 3018PRO CNC routers. Simpler Operation: Simply connect the offline module to the GRBL control board, and then you can use this module to control the CNC router. Item Type: CNC Router Offline Control Module Connection: USB, USB CH340. Software: GRBL Controller, Universal G Codes Sender. Input Voltage: 12-36V Main Control Chip: For atmel 328P. Stepper Motor Driver: A4988 Spindle Drive Circuit: MOSFET, recommended 12-36V, within 10A. Spindle PWM Speed Regulation: Supported Stepper Motor Support: 12V, within 1.5A, maximum current recommended less than 2A, 42, 57 stepper motors. Laser Engraving: Supported Power Interface: 5.5-2.5mm DC interface. Package Includes: 1 x CNC Router Offline Control Module 1 x FC 8P Cable 1 x Memory Card 1 x Memory Card Holder 1 x User Manual