1 Inch Offline: 1. GRBL offline control /Z three axis 2. Control interface return: set as origin 3. Offline main page, Y+ unlock 4. Offline main page, Y-return to zero File page turning: offline (File more→) page, short press X+/X- Support files: NC, NCC, TAP, , Gcode, GCO, NL, CUT, CNC Support SD/TF memory card Material: plastic + metal Color as shown Package Contents: 1 x Offline Controller Board Only the above package content, other products are not included. Note: Light reflection 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.