CO2 Laser Head 1.5" to 4" + Auto Focus Sensor Up Down for CO2 Laser Engraver Cutting Machine CutterDescription To ensure optimal performance of your CO2 laser engraving and cutting machine, it is essential that the focusing sensor set is paired with the automatic up and down table laser instrument. The wiring for this setup should be connected to the Z axis limit on the control board. This will allow for precise control and accuracy during the engraving and cutting process. Invest in the proper equipment and setup to get the most out of your CO2