Features 1、Offline Control: With the offline controller module, you can control the CNC router without connecting to a computer, so the CNC router can be placed anywhere you want, such as garages and workshops. 2、Manual Control: The XYZ axes position can be manually adjusted as the starting point for engraving. The module can also manually control the spindle on or off mode. 3、Simpler Access: After the file is put into the memory card, the engraving file can be directly recognized. You can also connect the offline module to a computer via a micro USB cable and store files directly. 4、Ideal Matching: The offline module is perfectly compatible with 3018, 3018 PRO CNC routers and other general purpose 3018PRO CNC routers. 5、Easier Working: You just need to connect the offline module to the GRBL controller board and then you can use this module to control the CNC router. Specification Item Type: CNC Router Offline Control Module Connection: USB, USB CH340. Software: GRBL Controller, universal G Codes transmitter. Main Control Chip: For atmel 328P. Stepper Motor Driver: A4988 Spindle Drive Chip: MOSFET, recommended 12-36V, within 10A. Spindle PWM Speed Regulation: support Support Stepper Motor: 12V, within 1.5A, it is recommended that the maximum current be less than 2A, stepper motor 42, 57. Laser Engraving: Supports Power Interface: 5.5-2.5mm DC interface. Package List 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