20W 450nm 40mm Blue Fixed-focus Laser Module DIY Laser Engraver Machina Parts

Description Specification Reviews 20W 450nm Laser Head Use for CNC 3018 Pro fixed-focus TTL/PWM 20000mW blue laser module laser cutter for CNC engraving machine Description: The laser can engraving on stainless steel but I suggest the stainless steel is better have coating！ Laser module power is relatively large, only for industrial use, to prohibit the exposure of the eye, otherwise it will cause permanent blindness, the consequences at your own risk. Do not use in flammable and gas atmospheres to avoid fire and explosion Prohibit children from exposure to this laser product. Do not open the module to avoid damage. Precautions： 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 the laser module and engraving  material is 16mm(Use the plastic column to do it). Or it will influence the result. Connect to the driver board carefully! The Red cord is 12V , the black cord is GND-, the yellow cord is Signal(S). Make sure you know how to connect it, otherwise it might damage the laser module! Specification: Laser wavelength: 450 nm (blue voile) Spot type: Dotted Light power: 20 W pulsed, 7-8 W average Drive mode: external ACC constant current drive Cooling method: Forced Air Cooling Operating voltage: 12V DC ​power supply: 12V 5A Shell material: Aluminium, Surface Anodized Module material: Copper Life Time: 8,000hours Working temperature:-40-75Celsius Packing List: 1 x 20W Laser Module 1 x 3p-3p Cable 1 x 3p-2p 2p Cable 1 x Glasses SKU: CNC-345 Categories: CNC & 3D Printers, CNC Machines Tags: 20w laser module, 450nm, blue, Blue Light Module, Engraving Machine, F23 Module 450nm, Laser, Laser Head 450nm, LASER TREE, machine, TTL Laser Head