Feature: 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. Input Voltage: 12-36V 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 Module1 x FC 8P Cable1 x Memory Card1 x Memory Card Holder1 x User Manual Note: The router cannot be connected to the offline controller and the USB cable at the same time. Disconnect the USB cable from the router before connecting the offline controller.