CNC mainboard, GRBL 1.1 for CNC engraving machine, 3 axis control board card max support 48V 500W motor Switch to switch XYY/XYZ axis operation, switch power switch, safe and efficient. Integrated drive to prevent chip short circuit, integrated heat sink. With fan, they have better heat dissipation. Support: offline controller, external mechanically driven, emergency stop, reset, continue, pause, limit switch interface, which can meet your different needs. Both the data transmission chip and the main control board use an external crystal oscillator, the transmission operation is more stable. Acrylic coating, beautiful appearance, protect the motherboard. It can be used for laser engraving, drawer, CNC engraving machine, etc. Color: Blue Material: Metal + Plastic Package Content: 1 x CNC MotherboardOnly 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 error is +/- 1-3cm.