CO2 Laser Head Auto Focus Focusing Sensor for Automatic Up Down Engraver Cutter Security Then press the timer switch

Then press the timer switch (4 ml to 100 ml of option

Long Battery Life: Internal battery provides Bluetooth adapter for more than 24 HOURS of use after 3 hours charging time

which is lighter than the pen which needs a AAA battery to operate

After the machinery and circuit are all correct

CO2 Laser Head Auto Focus Focusing Sensor for Automatic Up Down Engraver Cutter Security Then press the timer switchTechnical Parameters: Automatic focusing sensor for laser instrument. Inner Diameter: 24mm Over Length: 100mm The focusing sensor set must be working with automatic up and down table laser instrument. the wiring is connected with Z axis limited in the control Board. Package Includes: 1 Set Automatic focusing sensor