A more powerful, safer and smarter laser module kit for engraver, 3D printer, CNC mill and replacement for Arduino project.

Features:
– Designed for laser engraver machine, laser cutter, 3D printer, CNC millling, replacement for arduino project.
– 2 in 1 focus, adjustable lens and fixed focal length in one module.
– 7.5W blue light laser, suitable for engraving and cutting.
– More Safety, built-in protective glass to protect eyes! Even without wearing protective glasses, the operation is more comfortable.
– Modified laser air assist, avoid smoke damage to the lens.
– More quiet, intelligent drive adjust the cooling fan speed according laser temperature.
– Easy to use. Digital PWM wave pulse signal generator adjustable frequency duty-cycle board replacement for NEJE laser module. 
– Sliding slot is provided for easy adjustment of focus.
– Engrave a wide range of soft materials: MDF/Balsa/Paper/Wood/Fabric/Plastic/Leather/Plywood/Foam Paper/Anodized Aluminum. 

Note:
*12V3A power supply and goggles are not included in the kit.
*Can Engrave: MDF/Balsa/Paper/Wood/Fabric/Plastic/Leather/Plywood/Foam Paper/Anodized Aluminum 
*Can Not Engrave: Metal/Glass/Stone/Ceramics/PCB/Stainless Steel/Reflective Material/ Transparent Material 
*Smoke will be generated when burned, please pay attention to smoke exhaust indoors. 
*Please wear laser goggles during usage and avoid touching the laser directly with your eyes and skin! 

Specifications:
Material: Aviation aluminum, brass
Laser Color: Blue
Module Input: 20-30W 
Optical Power Output: 7.5W (7500mW)
Wavelength: 445-450nm 
Beam Shape: Dot (Focusable) 
Working Voltage: DC 12V 
TTL&PWM Modulation: YES, compatible with Both TTL & PWM Modulation 
Input Voltage: DC12V 3A
PWM/TTL Input: DC3.3V-12V  
Input Interface: PH2.0-4Pin (+,-, PWM/TTL, Temperature), 3Pin (+,-, PWM/TTL) , 2Pin+2Pin (+,-) + (PWM/TTL,-) 
NOTE: Temperature interface can be disconnected, the text instructions replacement for NEJE for temperature acquisition can be found on wiki. 
Drive Mode: External ACC 
Safe Temperature Range: <60 ℃ 
Module Weight: 202g (The lighter the weight, the smaller the move inertia, the better the performance) 
Life Time: 10000 ~ 20,000 hours
Cooling Mode：Temperature sensor intelligent control + 10000 rpm 40mm cooling fan
Section Size: 40*40mm
Adapter Plug: 5.5 2.1 port
Item Size: 6*4*4cm / 2.36*1.57*1.57in
Package Size: 16*11*6cm / 6.29*4.33*2.36in
Package Weight: 320g / 11.28oz

Packing List:
1 * 30W Laser Engraving Module 
1 * Laser Module Sliding Slot
1 * 4 Pin Cable(320mm Cable) 
1 * Interface Adapter Board
1 * 2.5mm Allen Wrench 
1 * 5mm Allen Wrench 
1 * 3pin Input Cable
1 * 2pin TTL Cable