Cnc Grbl 4-axis Stepper Motor Control Board,for Cnc Engraving Machine

Offline controller: control CNC router without connecting to a computer. You can download the required engraving files to the offline controller.Control panel: GRBL 4-axis, 300W/500W spindle /775 engine / 2PIN laser-module / 3PIN laser-module/fanInput voltage: 24-48VDCEasy to use: All you have to do is connect the offline module to the GRBL controller board and you can then use the module to control the CNC router.Note: Please do not use the computer and offline controller at the same time, otherwise it will block the communication.Colour: black grayMaterial: metal + plasticPackage Contents:1 set * USB drive boardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.