This is a 1.6W semiconductor laser for the Ender-3 S1 and Ender-3 S1 Pro. With the CV module laser, you can engrave various materials such as wood, leather, textiles, or plastic. The laser is mounted on the extruder bracket using a mounting plate. The mainboard of the Ender-3 S1 already has an interface for the laser module. Only the CV laser firmware needs to be installed. For more information, please refer to the documentation. Warning: This is a Class 4 laser. Avoid eye and skin contact, always wear the provided safety glasses, and ensure that no one unprepared is in the same room. Extra caution and supervision are necessary when working with flammable materials such as wood and cardboard.