offline control baord only suitable control baord,in order to you can suit you product, confirm with customer service placing an order,wishing you a happy shoppingThe duty of PWM pulse frequency is adjustable, short press the main page Z+, Z- Laser-power/spindle speedShort press the EXIT, the maximum spindle speed is 1000/10000 switch (the speed when PWM is set to 100% duty )Y+UnlockY-return to zeroZ+ and English switchingCan control four-axis XYZA axisSupporting files: NC, NCC, TAP, , Gcode, GCO, NL, CUT, File page turning: Short press X+/ X- on the File pageBuilt-in battery time adjustmentFree 128MB memory cardSupport SD/TF memory cardPress Z+ for 5 seconds: Change the Language to English.Press SMOD: return.SD card: SD card reader is to write into the directory G-code files .Material:ABScolour:blackPackage Contents:1 x 1.8 inch offline control board1 x TF card1 x cableOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed is +/- 1-3cm.