Laser Power:Pulse 15W average 8Wlaser Wavelength:450nMBeam Shape:0.1mm PointFocal Length: Fixed focal lenghMaterial:Aircraft Aluminum,CopperPower Prot Input Voltage: DC 12VPWM Prot Input Voltage: DC 5VPower Supply Interface :XH2.54*3PDriving mode:External ACC Constant Current DrivePACKING LIST:Laser*160cm 3Pin Cable*1 Made of high quality hard aluminum and brass material, the surface is by anodized  and sandblasting ,not easy rust,very durable.One of the most powerful diodes available, upgrade your Wood engraver to aMetal Marking Machine.It can mark metal and stone, cut wood, foam and other materials easily.With heat dissipation fan,make it with longer service life.Friendly Reminder：Please wear the protective glass when you use the laser module.Do not touching the laser light directly in case that hurt the body and skin.Keep children and pets away from the laser module when it working.The Laser dot could not be adjusted, please make sure the distance between bottom of thelaser module and engraving material is 16mm(Use the plastic column to do it). Or it will influence the result.Please connect to the driver board carefully! The Red cord is 12V+, the black cord is GND-,the yellow cordis Signal(S). Please make sure you know how to connectit,Otherwise it might damage the lasermodule!